FAQ—ArcGIS Online Help | Documentation

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Listed below are frequently asked questions about ArcGIS Online. If you encounter an issue when working with ArcGIS Online, see Troubleshoot for recommended solutions.







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ArcGIS Online is a collaborative web GIS that allows you to use, create, and share maps, scenes, apps, layers, analytics, and data. You get access to content in ArcGIS Living Atlas of the World, ArcGIS apps, and cloud infrastructure, where you can add items; publish web layers; and create maps, apps, and scenes. ArcGIS Online can be used as an integral part of the ArcGIS system, extending the capabilities of ArcGIS Pro, ArcGIS Enterprise, ArcGIS APIs, and ArcGIS Runtime SDKs.

What is ArcGIS Companion?

ArcGIS Companion is a native mobile app for iOS and Android that provides access to your ArcGIS organization, content, and profile. Use the app to search, browse, and manage ArcGIS content, members, and groups, and to share and collaborate with others. With Companion, you choose where you want to open items such as maps, scenes, apps, and layers. For example, you can open web maps in Map Viewer or Map Viewer Classic. Discover the most popular and up-to-date content in your organization and stay informed with the latest Esri news, blogs, and tweets. Administrators can perform common tasks such as resetting member passwords, enabling and disabling access, updating user profiles and roles, adding members to the organization, assigning members to groups, and managing add-on licenses.

Companion is available to all members of ArcGIS organizations and developers who are part of the ArcGIS Developer Program. It is available in all languages that the ArcGIS Online website supports.

To get started, install ArcGIS Companion on your mobile device from the following:

Does ArcGIS Online require a subscription?

Yes. To access all the capabilities of ArcGIS Online, your organization needs to purchase an annual subscription. Free trials can be used to test the full functionality before you buy it.

ArcGIS Online is based on an annual subscription that offers a set of plans from which you can choose. Each plan includes a number of members and credits. Credits are the currency for ArcGIS Online and are consumed when using certain functions, such as spatial analysis, routing, or geocoding. How you use ArcGIS Online determines the number of service credits you consume.

The remaining number of credits and members is based on the subscription your organization has purchased. Additional members and service credits are available as add-on features of any subscription plan. If you are in the United States, you can add additional members and credits by upgrading your subscription online, by calling , or by contacting your local Esri office. If you are outside the United States, contact your local Esri office.

Can I use ArcGIS Online free?

Yes, if it is for noncommercial use. With a free public account, you can create, store, and manage maps, scenes, and apps, and share them with others. You also get access to content shared by Esri and GIS users around the world.

Can I transfer my data directly from one organization to another?

No. Content published to ArcGIS Online is hosted in a specific organization and cannot be moved to another ArcGIS Online organization. Most content can be downloaded from an originating organization and uploaded and published in another organization. The following exceptions apply:

  • If you have a trial organization, the organization and content can be migrated to a purchased organization.
  • If you join an organization with an existing public account, content (web maps and apps) will be migrated into the organization.
  • Distributed collaboration provides the ability to copy content between ArcGIS Enterprise organizations and ArcGIS Online organizations.
  • Partnered collaboration allows you to share content with other ArcGIS Online organizations using groups.

How much does it cost to use ArcGIS Online?

ArcGIS Online is based on an annual subscription that offers a set of plans from which you can choose. Each plan includes a number of user types and credits. Credits are used in exchange for premium hosted services such as storage of hosted web layers, performing analytics, and using demographic maps.

What is a Premium Feature Data Store?

By default, an organization has a Standard Feature Data Store, sharing database resources equitably with other organizations. This meets the needs of most organizations performing common workflows.

Premium Feature Data Store options provide dedicated database resources for your organization, such as memory, CPU, and input/output (I/O). A Premium Feature Data Store ensures improved database performance under load for intensive query and concurrent editing workloads. Premium Feature Data Stores are available in several performance tiers: M1 (improved), M2 (high), M3 (higher), and M4 (highest). M1, M2, and M3 have a limit of 1 TB of storage and M4 has a limit of 4 TB. Standard Feature Data Stores have a limit of GB using credits for storage.

You can see details about your organization's storage usage and Feature Data Store type by clicking Feature Data Store on your organization's Overview page.

What is regional data hosting?

Regional data hosting refers to the region where your ArcGIS Online organization's hosted geospatial data is stored. This includes storage of the following:

  • Features
  • Tiles
  • Data files (feature attachments, scene layer packages, and documents)
  • Web maps

All other content and user information—for example, subscriber and subscription information, item metadata, groups and sharing information, and credit accounting—is stored and managed in the United States. In addition, location-based services such as geocoding, routing, and geoenrichment run in the United States.

An organization's regional data hosting location is selected when the organization is purchased and cannot be changed after purchase. Location options include United States, Europe, and Asia-Pacific. The regional data hosting location is displayed on the Overview tab of the organization page.

What does Esri access mean, and how do I enable it?

Who can use collaborations?

Partnered and distributed collaborations are enabled for subscribed ArcGIS organizations. Developer accounts, and individual accounts such as public, trial, and ArcGIS for Personal Use accounts don't support collaborations.

How secure is ArcGIS Online?

ArcGIS Onlinesecures all access to your information. Information is accessible to only those users with whom it has been shared. User identity is established through a login process that always takes place over HTTPS. Subsequent access to information requires authentication tokens acquired at sign in. Organizations only allow access through HTTPS, which ensures that all data (for example, features and tiles) as well as authentication tokens are encrypted during transport over the internet. Trust Center is an informative website with in-depth security information for ArcGIS Online and all Esri products.

As of December , HTTP is no longer supported, and references to HTTP URLs no longer work in ArcGIS Online. Organizations must therefore make the necessary changes to content and workflows. For more information about considerations when making this change, see the Important Updates for ArcGIS and HTTPS Only Enforcement Support article.

Why must my organization use HTTPS only?

Encrypting sensitive information is the primary reason to use HTTPS. HTTPS uses Transport Layer Security (TLS) or Secure Sockets Layer (SSL) encryption protocols that provide secure communication across networks. ArcGIS uses TLS, which is a more recent and secure encryption protocol than SSL. ArcGIS Online still supports SSL, and you will often see SSL and TLS used interchangeably in documentation. When you send information over the internet using HTTPS in your URL address, only the intended recipient can understand the information. This encryption is important because the information you send over the internet is usually passed between many computers before it gets to the destination server. Any computer between you and the server can see sensitive information, such as passwords, if the information is not encrypted with a valid TLS or SSL certificate. When a valid TLS or SSL certificate is used, the information becomes unreadable to everyone except the server where you are sending the information. This protects it from malicious activity such as identity theft.

As of December , HTTP is no longer supported, and references to HTTP URLs no longer work in ArcGIS Online. Organizations must therefore make the necessary changes to content and workflows. For more information about considerations when making this change, see the Important Updates for ArcGIS and HTTPS Only Enforcement Support article.

It is also recommended that you enable TLS on all your on-premises services. When you add layers to maps or add layers as items, you must use HTTPS URLs. HTTPS helps protect your data and also mitigates mixed content issues with browsers. Many websites today can only be accessed through HTTPS. HTTPS ensures that your data and all other communication between your browser and ArcGIS Online are encrypted.

For more information on TLS, SSL, HTTPS, and internet security, visit Trust Center. Esri created Trust Center as your resource for security, privacy, and compliance information about ArcGIS. Trust Center provides information about product security, security alerts, security compliance, best security practices for your organization, and more.

How can I update layers in my web map or web scene to use HTTPS?

As of December , HTTP is no longer supported, and references to HTTP URLs no longer work in ArcGIS Online. As the owner or administrator of a web map or scene, you must update all layers in the map or scene to use HTTPS from the Settings tab of the map's or scene's item page. HTTPS encrypts the information in the layer when it's transmitted over the internet. When you update the layers in your map or scene to use HTTPS, ArcGIS Online inspects each layer in the map or scene to determine whether it needs to be updated to HTTPS. If any layers are found to use HTTP, ArcGIS Online makes a request to the same layer using HTTPS and updates the map or scene and any associated layer items you own or administer. If a layer does not support HTTPS, you are notified of this fact and the layer is not updated. If you are notified that the layer does not support HTTPS, contact the owner of the layer, who can either configure the layer to support HTTPS or provide an alternative resource.

When you update layers in your map or scene to use HTTPS, any custom symbols that use HTTP are automatically updated to use HTTPS if the source of the custom symbols supports it. Other layer customizations, such as images embedded in pop-ups, are not updated to HTTPS. To update these references to use HTTPS, open the layer (or map) in Map Viewer (formerly known as Map Viewer Beta) orMap Viewer Classic (formerly known as Map Viewer) and update the references there.

For more information, see the following resources:

How can I update layers in a web map that reference my ArcGIS Server layers?

You can update any layers in a web map that reference your ArcGIS Server site from the Settings tab of the map's item page. Use the Update References utility to update the URL referenced by layers from a staging site to a production site, or to migrate your ArcGIS Server layers to a new domain. The utility inspects the layers in the map and presents the ArcGIS Server sites that are available to update. Layers that use the reference you select are updated to use the new site specified as the replacement. ArcGIS Online updates all ArcGIS Server layers referencing the site as well as any associated layer items you own or administer.

The layers at the specified replacement site must exactly match the existing layers. If the layers do not match, layers may not draw or perform as expected. ArcGIS Online makes a connection to the replacement site to confirm the layers are available there. If they are not available, you are notified, and the unavailable layers are not updated.

How can I change the data source URL protocol for my secure service with embedded credentials to HTTPS?

As of December , HTTP is no longer supported, and references to HTTP URLS no longer work in ArcGIS Online. If you own or have privileges to administer secure services with embedded credentials such as an ArcGIS Server feature layer or a print or geocoding service, you can replace http with https as the URL protocol of the data source on the Settings tab of the secure service item's item page. HTTPS encrypts the information in the service when it is transmitted over the internet. For more information, see Why must my organization use HTTPS only?

What do I need to know about TLS ?

Esri is committed to using the latest industry standards and best practices for security protocols. Transport Layer Security (TLS) is a widely deployed security protocol that provides privacy and data integrity between communicating applications over a network. As of April , Esri is enforcing the use of TLS in ArcGIS Online and removing support for earlier TLS versions ( and ). For more information, see FAQ: What do I need to know about TLS and ArcGIS?.

Can I back up my organization?

You can save local copies of data files you've added to your organization. From the My Content tab of the content page, open the item page for the data file you want to save and click Download. Browse to a location on your computer where you want to store the file.

If your hosted feature layer is updated frequently, you may want to periodically export the data—as a shapefile or CSV file, for example. From the My Content tab of the content page, open the item page of the hosted feature layer whose data you want to export. Click Export Data and choose the file type in which you want to store your data.

Distributed collaboration provides the ability to copy content between ArcGIS Enterprise base installations and ArcGIS Online organizations. This workflow can be used to create scheduled backups of your data and web maps.

I need to provide my organization's subscription ID to Esri Support when reporting a problem I'm having with ArcGIS Online. Where can I find this information?

If you have privileges to view members in the organization, you can view your organization's subscription ID on the Overview tab of the Organization page.

How do I report data problems?

I see inappropriate content on the website. What can I do?

To send a message to the website team about something you think is inappropriate, use the Report Abuse link at the bottom of the site. If that link is not available on your organization site, send an email to arcgisonline_feedback@arenaqq.us with the URL to the item you think is inappropriate and a brief explanation of your concern.

What are the terms of use for maps, apps, layers, and tools I find on the website?

The specific terms of use for items are provided in the Terms of Use field on the item page for each item. There are also terms of use for the site.

How can I make my profile private?

If you do not want others to search for your user name, click your name on the top banner to open your profile and choose the No One (Private) option.

Beta components may have incomplete functionality or documentation and may undergo some minor, unannounced changes. Beta components are usually available in English only. If you have issues or are experiencing problems with any of the beta functionality, contact Esri Support or visit the Esri Community.

ArcGIS Online also includes Esri content such as maps, layers, and apps that may be released as beta. Beta content is subject to change without notice. Changes may include updated service URLs, data fields, symbology, or other functional changes. Beta content is available for testing but should not be used in production applications.

What does it mean when an ArcGIS Configurable Apps template is labeled mature?

A Configurable Apps template is moved to mature status when an improved comparable template replaces it. When a template is moved to mature status, existing apps you created with it continue to work and remain accessible to users, and you can still edit and update your apps. You can also create apps with a mature Configurable Apps template; however, this is not recommended as Esri doesn't add new features or fix issues in mature templates. For example, mature app templates are not updated to support browser changes or changes in ArcGIS that affect app functionality. Nevertheless, if you want to create an app based on a mature app template, you can do so by clicking the Create a Web App button on its item page.

Anyone, including anonymous users and organization members assigned the default Viewer role, can edit features in a public feature layer if the layer is editable. To edit features in editable feature layers that are not public, you must have a user type that includes the ability to edit features (for example, the Editor user type) and be assigned feature editing privileges. Feature layer edits include creating, updating, or deleting the features, as well as creating, updating, or deleting the information (attribute values) associated with the features.

When do I get email notifications related to ArcGIS Online?

  • Members of an organization—You make changes to your profile; you request a password reset or user name reminder; your administrator invites you to join the organization; your administrator disables your multifactor authentication; your password is reset; your administrator assigns you a license for one or more ArcGIS apps and opts to notify you; you have used percent of your credit allocation limit; someone leaves a comment about an item you own or replies to one of your comments.
  • Administrator-specific emails—Immediately after the subscription request is processed; the subscription is renewed or upgraded; immediately before and 1 day after the subscription expires; the organization has used 75 percent and percent of credits; a member has used percent of their credit allocation limit; members need their multifactor authentication disabled; members who haven't set up a security question and answer attempt to reset their password.
  • Public account users—You make changes to your profile; you request a password reset or user name reminder; someone leaves a comment about an item you own or replies to one of your comments.

    If you change the email address associated with your public account, you will receive a notification email with a link to click to confirm the change. Once you confirm the email address change, the new address will be applied to your account. If you don't confirm the change within 60 minutes of your change request, your account won't be updated.

  • Trial-specific emails—Immediately after you request to start a trial; during a trial with information on ArcGIS apps and notices when you have used 75 percent and percent of credits; 10 days, 5 days, and 1 day before the trial ends; 1 day after the trial ends.

Email notifications related to ArcGIS Online are sent from notifications@arenaqq.us to either the email address in your profile or the email address your administrator entered into your invitation to join the organization. Designated administrators are notified when the organization sends an email that cannot be delivered, and members receive a message in their Notifications pop-up that there was a problem delivering email to their address. See the common notification troubleshooting tips for additional information on why you may not be receiving these emails.

When do members see contact information for the administrator of their organization?

The name and email address of the administrator are included in the invitation to join the organization; the notification that the profile changed; requests to reset a password, retrieve a forgotten user name, and help with multifactor authentication; notifications about the status of an organization's request for verification; and the notifications related to reaching or exceeding the credit allocation limit. Specifying administrative contacts determines the administrators who are included in the emails.

What does it mean when my ArcGIS Online subscription is in a restricted state?

A subscription is moved to a restricted state when an organization uses all of its credits. With a restricted subscription, access to premium content and functionality is limited, but the account remains usable. If you see a message indicating your ArcGIS Online subscription is in a restricted state, contact the default administrator of your organization.


You can create a public account. Once you've created your account, you can sign in to ArcGIS and access other aspects of ArcGIS Online. You can also use it to access Esri web resources such as My Esri and Esri Community. From the website, click the Sign In link at the top of the site, or access the sign in page directly from arenaqq.us Click Create a public account. You are redirected to a page to create a new account. You can only create an organizational account if the administrator of an organization invites you to join the organization.

How do I change my contact information?

You can change your name through your profile. If you have a public account, you can also change your email address through your profile. Administrators can change member email addresses through the member profile page.

How do I change my password?

You can change your password through your profile or you can create a new one from the website. If you sign in to your organization with an organization-specific login such as SAML, contact your enterprise identity provider for information on how to reset your password. If you sign in to ArcGIS with an account you created using social network credentials, contact your social network provider for information on how to reset your password.

What are the minimum user name and password strength requirements for ArcGIS logins?

An ArcGIS user name must contain 6 to alphanumeric characters. You can also use the following special characters: . (dot), _ (underscore), and @ (at sign). Other special characters, nonalphanumeric characters, and spaces are not allowed. Your user name cannot be the same as your password.

If you have an ArcGIS organizational account, your password must meet the requirements of your organization. If your organization uses the ArcGIS default policy for passwords or if you have an ArcGIS public account, your password must have at least eight characters and contain at least one letter and one number. Your password is case sensitive and cannot be the same as your user name.

Weak passwords won't be accepted. A password is considered weak if it's a commonly used password such as password1 or includes repetitive or sequential characters—for example, aaaabbbb or abcd.

How do I change the device or authentication app I'm using for multifactor authentication?

Disable multifactor authentication on your account and reenable it with your new device or authentication app.

What are the ArcGIS account types and where can I use them?

Account typeDescriptionMore information

ArcGIS organizational account

An ArcGIS organizational account allows you to see the organization's customized view of the website, and gives you access to the organization's authoritative data and other geospatial content that you can use to create maps, scenes, apps, and other geospatial content. You can also share and collaborate with other members of your organization, participate in groups, and save your work.

With an organizational account, you have access to your organization, ArcGIS apps, and ArcGIS Developer.

Depending on how you were invited or added to the organization and your organization's security settings, you can sign in to an ArcGIS organizational account using an ArcGIS login, a SAML login, an OpenID Connect login, or a social login (such as Facebook and Google). Your administrator can also enable Esri access on your account, which gives you access to Esri web resources.

ArcGIS public account

An ArcGIS public account is a free account designed for personal, noncommercial use. With a public account, you can create, store, and manage geospatial content, share content, and access content shared by Esri and GIS users around the world.

With a public account, you have access to the ArcGIS Online website (with limits on use), My Esri, Esri Community, and other Esri web resources.

You can create and sign in to an ArcGIS public account using an ArcGIS login or a social login (such as Facebook and Google). You can also use your public account to create an organizational account if you're invited to join an organization. The public account becomes an organizational account and all your content moves to the organization.

ArcGIS developer account

An ArcGIS developer account gives you access to ArcGIS Developer.

When you upgrade your developer account, it automatically becomes an organizational account.

For more information on account types, see Create account and Sign in.

How do I delete my account?

To delete your organizational account, contact your administrator. Your administrator will need to move any items you own to a different member of the organization before removing your account. Once your account is removed, you will no longer have access to your organizational account or any content or groups you previously owned. If the organization prevents anonymous access, you will not be able to access the organization site. Your content and groups stay with the organization and can be reassigned to other members. If you were added or joined with an ArcGIS account that is enabled for Esri access, your account is still available to use with Esri web resources such as My Esri and Esri Community. You can also use it as a public account (but you will not have access to any of your content or groups that became associated with your organization).

If you want your account deleted from the Esri system, contact Customer Service. If your ArcGIS account is not enabled for Esri access, it is removed from the system and you can no longer access it, even if it was one you created before joining the organization. If you were added or joined with your organization-specific login (SAML or OpenID Connect) or your social network credentials, your login is no longer available to use with the ArcGIS Online organization or with Esri web resources. SAML and OpenID Connect logins can still be used with your organization-specific login system. Accounts created with social network credentials can still be used with your social network.


Which map viewer should I use?

ArcGIS Online offers two map viewers for viewing, using, and creating maps. The new Map Viewer (formerly known as Map Viewer Beta) or Map Viewer Classic (formerly known as Map Viewer) can be configured as the primary map viewer for your organization and for individual members.

The new Map Viewer supports most of the mapping workflows available in Map Viewer Classic, including searching, styling, pop-up configuration, filtering, labeling, and clustering. Additionally, Map Viewer includes some new capabilities that are not supported in Map Viewer Classic. The following capabilities are only available in the new Map Viewer:

Some functionality is not yet available in the new Map Viewer. For the following mapping capabilities and workflows, it is recommended that you use Map Viewer Classic until they are supported in a future release of the new Map Viewer:

  • Performing analysis
  • Switching between basemaps in different coordinate systems using the basemap gallery

    Map Viewer supports switching between basemap coordinate systems when adding a layer as a basemap or when adding a basemap layer from ArcGIS Living Atlas of the World. Map Viewer Classic is recommended for organizations that have custom basemap galleries with basemaps in more than one coordinate system.

  • Styling vector tile layers
  • Viewing and configuring related records in pop-ups
  • Configuring pop-ups and other properties for imagery layers

    Map Viewer supports adding, searching, styling, and setting some image display properties for imagery layers. Other configuration options are only available in Map Viewer Classic.

  • Adding, searching, and configuring streaming feature layers

    In Map Viewer, you can open a map created in Map Viewer Classic that contains a streaming feature layer. You can then modify the layer's transparency and other basic properties in Map Viewer, but other configuration options, such as pop-up configuration and styling, are only available in Map Viewer Classic.

  • Generating code for embedding maps

    When using Map Viewer, it is recommended that you create an app using the Minimalist app template and then embed the app.

For more information, see Map Viewer web map compatibility.

Can I change the default styles in my map?

Yes, you can change both the type of map used to show your data (for example, color maps versus size maps) as well as the styling characteristics of those maps, such as layer transparency, symbol colors, and line weights. To change the style of your map in Map Viewer, select a layer in the Layers pane and click the Styles button Styles on the Settings (light) toolbar. You can either choose a different smart mapping style or modify the settings of the current style.

When I apply styles to my layer, why don’t I see the same choices every time?

The choices are determined by the nature of the data you are mapping. For example, you will see different styling choices if your map layer is composed of point, line, or area features. The kind of data associated with your points, lines, and areas is also considered. For example, a point feature may have only geographic coordinates (location), categorical information (such as tree species), or numerical information (such as air temperature). Not every map type can be used for every kind of data. By discerning these facts about your map layer, ArcGIS Online can present the best mapping choices.

What is the source of the Disasters, General Infrastructure, and Damage symbols?

What kinds of layers can I add to a map?

For the full list of layers supported in Map Viewer Classic (formerly known as Map Viewer), see What layers can you add?. To see what layers are supported in Map Viewer (formerly known as Map Viewer Beta), see Add layers to maps.

What is the coordinate system of the web maps in Map Viewer and Map Viewer Classic, and can I change it?

In Map Viewer (formerly known as Map Viewer Beta) and Map Viewer Classic (formerly known as Map Viewer), all layers in a web map inherit the coordinate system of the basemap. Web Mercator is the coordinate system of basemaps in the default basemap gallery. If you want to use a coordinate system other than Web Mercator for your web map, you can add your own layer as a basemap directly to the map to create a custom basemap.

Alternatively, an administrator can configure your organization to use a custom basemap gallery with basemaps in a coordinate system other than Web Mercator. Map Viewer Classic is recommended for organizations that have custom basemap galleries with basemaps in more than one coordinate system.

What's the difference between features stored in the map and features stored in an ArcGIS Server feature service layer?

Features stored in the map come from creating a map notes layer or from an uploaded file that can only be edited by the map author. Map notes are useful when you want to provide more information associated with a particular location. You can include a pop-up with images, photos, and links to video and other useful sites. Features from feature service layers are served from ArcGIS Server and are stored in the layer that comprises a map. If the service is configured to allow editing, the features can be edited by anyone viewing the map. This is useful when you are seeking input from a broad community, including the public, and you want one map to reflect all the edits that have been made. For example, you might include a feature service layer in a map when you want citizens to report damaged property, blocked streets, graffiti, and so on.

What's the best way to add features to a map?

How do I save an individual feature layer as an item?

To save an individual feature layer from a multilayer feature layer, complete the following steps:

  1. Open the item page of the multilayer feature layer and go to the Visualization tab.
  2. Choose the layer you want to save from the Layer drop-down menu.
  3. Click Save as new layer to save a copy of the layer as a new item in My Content.
  4. Type a title, tags, and a summary, and optionally choose a different folder to save the layer.
  5. Select to create the new item with Just the current layer and click Save.

Can I add ArcGIS Living Atlas analysis layers to a group that contains my own analysis layers?

Yes. To add a ArcGIS Living Atlas analysis layer to your group, complete the following steps:

  1. Search for the group Living Atlas Analysis Layers.
  2. Toggle off the Only search in <name of your organization> option.
  3. Open the Living Atlas Analysis Layers group and find the layer you want to add.
  4. Open the item page of the layer, click Share, and check the box next to the group with which you want to share the layer.

How can I tell if a map is time enabled?

If you see a time slider at the bottom of a map, that map includes one or more temporal layers, and you can play the map to see how the information changes over time.

What's the difference between Save and Save As?

Save updates an existing map you own. Save As creates a copy of the map, and you see the original Save Map window where you can update the title, tags, and so on. You can save a copy of any map that is not owned by you; you cannot update an existing one you do not own.


A scene is a 3D representation of a collection of layers, styles, and configurations that allow you to share symbolized geospatial content with others over the internet. You can create 3D scenes through ArcGIS Pro or Scene Viewer in ArcGIS Online.

Scene Viewer is an app built into the ArcGIS Online website for creating and interacting with 3D scenes. Scene Viewer works with desktop web browsers that support WebGL, a web technology standard built into most modern browsers for rendering 3D graphics.

What's the difference between a scene and a map?

A scene is similar to a map in that they are a mashup of data layers you can view in a browser. Also similar to maps, scenes can be used in apps to provide users tools to interact with the layers in the scene. Scenes are different from maps because, unlike maps, scenes display data in a 3D environment and allow navigation in any direction and angle.

What's the difference between a scene and a scene layer?

A scene layer represents large geospatial data in 3D that you can style to display photorealistic features. You add a scene layer to scenes to allow users to view, analyze, measure, and query the 3D objects in the scene layer.

Do I need ArcGIS Pro to create a scene?

No. You can create scenes by mashing up layers shared with you in ArcGIS Online using Scene Viewer.

How can I use Scene Viewer with my 2D data?

You can bring your 2D data into a 3D environment and get a better understanding of the data. For example, you can create 3D symbols from your 2D symbols by applying a size and height. You can zoom in and out and rotate the surface to see the data from different angles. You can also add elevation to overlapping 2D layers so you more easily view the data in each layer.

What is the difference between Scene Viewer and CityEngine Web Viewer?

Scene Viewer and CityEngine Web Viewer are two different applications available in ArcGIS Online, each with its own unique functionality and purpose.

In Scene Viewer, you can do the following:

  • View scenes created from Scene Viewer or ArcGIS Pro. Scene Viewer doesn't support CityEngine web scenes.
  • Author scenes: for example, you can add and remove layers, modify symbology, or capture slides.
  • Display a collection of portal layers, such as scene layers, feature layers, image layers, or tile layers.
  • View scenes rendered in world extent with basemaps in a spherical globe view (global scene) or a planar view (local scene).
  • Navigate scenes where data loading and image-graphic rendering are performed progressively.

In CityEngine Web Viewer, you can do the following:

  • Display static CityEngine web scenes (.3ws) exported from CityEngine or ArcScene. CityEngine Web Viewer doesn't support scenes.
  • View CityEngine web scenes that are rendered in a small local extent with a Cartesian coordinate system.
  • Comment and compare scenarios: for example, you can use the swipe tool to see the differences between two scenarios.
  • CityEngine Web Viewer loads CityEngine web scenes as an initial download on opening and does not load any streaming data afterward.
  • CityEngine Web Viewer is a viewing tool and doesn't support authoring, such as adding basemaps, changing symbology, or configuring layers.

Can I share 3D geometry in feature layers?

Yes. You can share 3D points, lines, and polygons.

Can I share my own terrain models in scenes?


Can I still use extended and mature ArcGIS Configurable Apps templates?

Yes, you can continue to use extended and mature Configurable Apps templates. With extended templates, Esri updates the code when critical issues are discovered. However, extended templates are no longer available in the Esri-default gallery, and Esri does not certify that they will work with new versions of browsers or operating systems. Mature templates are also not available in the Esri-default gallery and are not certified to work with new versions of browsers and operating systems. In addition, Esri no longer maintains the code for mature app templates. However, existing apps created with a mature template will continue to work, and the source code can be downloaded and hosted on your web server. For more information about product life cycles, see Esri Product Lifecycle Support Policy.


How much storage space do I get?

There is no limit on the amount of storage an organization can have. If you are an administrator, you can view detailed reports about your organization's storage of tiles, features, and files from the Organization tab.

A public account comes with 2 GB of total storage space.

Storing features and files consumes credits. For more information about credits in ArcGIS Online, see Understand credits.

How large a file can I upload?

You can upload files up to GB to My Content through a web browser.

What's the best way to share my ArcGIS Pro content?

It depends on what content you want to share and how people need to use it.

If you want to share data, such as shapefiles, feature classes, and other data sources you use in your maps, share a layer package. A layer package includes the data inside the package, so it is self-contained and can be opened by any other ArcGIS user. People will be able to download your file and work with the data in ArcGIS Desktop.

If you own geospatial data that you want to publish as a read-only web layer, you can publish a map image layer using ArcGIS Server and add the layer to your organization. You can share the layer item with groups or your organization to make it immediately available for others to use in their maps and apps. Each of your registered services appears as its own item, which users can find, open, and use as a layer in their own maps.

When you share a project package (.ppkx) with the public, check the option to Share outside of organization when you create the package. This will load a copy of the source data into the package. If you share the package with your organization or groups in your organization, you can uncheck this option and the package will reference the data sources. If you do not need to include the data with the package, it will reduce the package size.

If you want to share your work with the widest audience, consider creating a map in Map Viewer (formerly known as Map Viewer Beta) or Map Viewer Classic (formerly known as Map Viewer). When you share a web map with others, they can view them in web browsers, mobile devices, and desktop map viewers.

Can I share a URL of my map or app?

Yes. Content items, search results, and groups can be accessed directly by a URL. For example, the URL arenaqq.us?id=10dffe4a9f6a7f08febac2a9 opens to the World Imagery Map Service published by Esri. Anyone can open the URL to a public item or group, including people who are not signed in to ArcGIS Online.

Do common search engines find the items I've added to ArcGIS Online?

Yes. Items that are uploaded and shared as public are automatically indexed by popular search engines and can be discovered by common search methods. If you are on the website, you can also use its search function to find items.

What happens if I delete the source item used to publish a hosted layer?

If the source item used to publish a hosted layer is deleted, the layer continues to draw as expected. However, certain functionality that requires access to the source data may no longer work as expected. The specific functionality can vary from layer to layer. Impacted functionality includes the following:

  • If you delete a service definition file, the Overwrite an existing service option in ArcMap may no longer work as expected.
  • If you delete a source shapefile, file geodatabase, CSV file, or Microsoft Excel file from Content, the Overwrite option on the hosted feature layer's item page is no longer available.
  • If you delete a tile package (.tpk or .tpkx), the hosted tile layer published from it can no longer be taken offline.

When the source item used to publish a hosted layer is another hosted layer, the hosted layer used as the source item cannot be deleted until all hosted layers published from it are deleted.

How can I update the data in my hosted feature layer?

If you enabled editing on a hosted feature layer, you can edit the features and their display in Map Viewer (formerly known as Map Viewer Beta) or Map Viewer Classic (formerly known as Map Viewer). If you save the layer in a web map and use the map in an app, you can edit the features in your hosted feature layer through the app.

To update the data in hosted feature layers published from a file geodatabase, shapefile, GeoJSON, or a CSV or Microsoft Excel file containing latitude and longitude information, you (the layer owner) or an administrator can replace the data with data from an updated source file using the Update Data > Overwrite Entire Layer option available on the Overview tab of the hosted feature layer's item page. You can also add more data to the hosted feature layer using the Update Data > Append Data to Layer option on the Overview tab or the Append Data to Layer option on the Data tab.

If you published the hosted feature layer from ArcMap or ArcGIS Pro, overwrite the service from the same map in the same application.

What is the difference between a web map and a web app within the context of the website?

A map is an interactive display of geographic information, for example, satellite imagery of streets, houses, and open space within Los Angeles County. You can view it in a browser, mobile device, or desktop app and use tools to change the extent, find places, and see detailed data about a specific location. In addition, you can build your own map by defining an area of interest, choosing a basemap, and adding layers. You can save maps and share them with everyone or with specific groups to which you belong.

A web app runs in a browser and combines maps, data, and tools for a targeted use such as a polling stations app. It might be as simple as a map embedded in a blog or as complex as a GPS navigation app or operational dashboard. Apps can be based on standard templates, which are configured using maps and other properties and developed with ArcGIS APIs. In general, apps are constructed from information in maps, supplemented with additional app-specific configuration and customization. Apps can be hosted as a part of your content in the system, or they can be managed independently and registered with the system.

When my organization changes the basemap gallery, what happens to the basemaps in my maps and scenes?

By default, your existing maps and scenes continue to use their current basemaps. To update the basemap, you must open the map or scene, choose a new basemap, and save the map or scene.

How can I control how hosted feature layers are reprojected when viewed on ArcGIS Online basemaps?

When you add layers to ArcGIS apps such as Map Viewer (formerly known as Map Viewer Beta), Map Viewer Classic (formerly known as Map Viewer), Scene Viewer, and ArcGIS Pro, the apps perform on-the-fly reprojection of the layers so the data lines up with the basemap. ArcGIS chooses the appropriate default transformation for the on-the-fly reprojection based on the coordinate system of the basemap. Sometimes the default choice is not as precise as you need, which can make it look as though the features are shifted slightly in one direction. Or the default choice may not match with the transformation you use as part of your GIS best practices for your organization.

When you publish a hosted feature layer from ArcGIS Pro, and you know people will use the hosted feature layer in maps that contain ArcGIS Online basemaps, you can do one of the following:

  • Option 1: Preserve the projection of your data but define a geographic transformation that ArcGIS Online can use when performing on-the-fly reprojections of the hosted feature layer.

    With this option, your source data and hosted feature layer data remain in the same projection. You define what geographic transformation should be used when on-the-fly reprojection is required.

    The following steps summarize how to keep your data's original projection and define a geographic transformation to control how the layer is reprojected when viewed on an ArcGIS Online basemap.

    1. In ArcGIS Pro, open the map you want to publish as a hosted feature layer.
    2. Open the data frame properties for the map and set the data frame's coordinate system to match the coordinate system of the source data in your map and apply your changes. For more information, see Specify a coordinate system.
    3. Define a geographic transformation. This involves defining what the transformation will project to and the projection used to perform the transformation. Choose to project to WGS

    When you publish, the hosted feature layer stores the geographic transformation you set and uses it when reprojecting the layer to view on an ArcGIS Online basemap.

    If ArcGIS Online doesn't support the transformation you define for the layer, it either uses the default transformation or fails to reproject. ArcGIS Online supports the transformations installed by default in ArcGIS Pro.

  • Option 2: Configure the map so that the feature class data is reprojected into WGS Web Mercator (auxiliary sphere) when it is copied to ArcGIS Online.

    With this option, the hosted feature layer data is stored in ArcGIS Online in the same coordinate system as the ArcGIS Online basemaps; therefore, no on-the-fly reprojection is needed when viewed on these basemaps. However, this means the hosted feature layer data and the data in your data source are now in different projections.

    The following steps summarize how to configure the map so the publishing process reprojects the hosted feature layer data so it is stored in WGS Web Mercator (auxiliary sphere):

    1. In ArcGIS Pro, open the map you want to publish as a hosted feature layer.
    2. Set the data frame's coordinate system to WGS Web Mercator (auxiliary sphere). This is the projection in which the hosted feature layer data will be stored. For more information, see Specify a coordinate system.
    3. Define a geographic transformation. Choose the projection used by the source data in your map.

    When you publish, the data copied to ArcGIS Online is stored in WGS Web Mercator (auxiliary sphere).

When searching for locations, I get too many results outside my area of interest. How can my organization create a more targeted geosearch experience?

By default, ArcGIS Online uses ArcGIS World Geocoding Service to find locations. If your organization wants to optimize search results for addresses and places of interest, members with privileges to create content can create a new view of ArcGIS World Geocoding Service to search only for specific types of locations within an area of interest. For example, you might create a locator view to limit search results to particular areas, or to enforce a specific level of precision when members perform batch geocoding of addresses. Once you've created a locator view, share it with the public (everyone) and ask your administrator to configure the organization to include your locator view as an option for performing searches.

Alternatively, if organization members need to search for locations based on your own data, administrators can configure your organization to use your own locators running on ArcGIS Server. For example, an oil organization could add locators to search their oil wells.

Do I need ArcGIS Pro to create a scene layer?

All scene layers start in ArcGIS Pro. You can publish a scene layer directly from ArcGIS Pro to ArcGIS Online, or you can create a scene layer package (SLPK), upload it to ArcGIS Online, and publish. If someone else—such as a contractor or a staff member in another department—provides you with an SLPK, you can upload that to ArcGIS Online and publish. In that scenario, the person who creates the SLPK needs an installation of ArcGIS Pro, but you don't need ArcGIS Pro to publish the scene layer from the SLPK.

Esri featured content

What is ArcGIS Living Atlas of the World?

ArcGIS Living Atlas of the World is an evolving collection of authoritative, ready-to-use global geographic information from Esri and other contributors and curators. It includes imagery, basemaps, demographics and lifestyle, landscape, boundaries and places, transportation, earth observations, urban systems, oceans, and historical maps that can be combined with your own data to create maps, scenes, and apps and perform analysis.

What is subscriber content?

Subscriber content is the collection of ready-to-use map layers, analytic tools, and services published by Esri that requires an organizational subscription account to access. This includes layers from Esri such as NAIP imagery, landscape analysis layers, and historical maps. Subscriber content is provided as part of your organizational subscription and does not consume any credits.

Premium content is the collection of ready-to-use map layers, analytic tools, apps, and services published by Esri that requires an organizational account to access and consumes credits. This includes layers from Esri such as demographic and lifestyle maps as well as tools for geocoding, geoenrichment, network analysis, and spatial analysis. Any member can be assigned privileges to use demographics, geocoding, and network analysis. Privileges to use geoenrichment and spatial analysis are only available to members assigned with certain user types. Access and credit information is listed on the item page description for each item. Premium apps, also called licensed apps, require an additional purchase and must be licensed to members by an administrator. Premium content is a type of subscriber content.

In what languages are Esri vector basemaps available?

Esri vector basemaps are available in the following languages: Arabic, Chinese (Hong Kong), Chinese (Simplified), Chinese (Taiwan), Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hebrew, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Spanish, Swedish, Thai, Turkish, Ukrainian, and Vietnamese.

To specify one of these languages for your organization, update the organization's region and language settings and ensure that your organization is configured to use Esri vector basemaps as the default basemap gallery.

My map contains layers that require a subscription. How can I share it with the public?

Hexbins are a mesh of connected hexagons commonly used for aggregating and summarizing spatial data. For example, in this tornado map, hexbins are used to show the connection between tornado strikes and injuries and fatalities. For more information, see blog posts about thematic mapping with hexagons and using the binning technique. You might also consider searching for hexbin images in popular search engines to see visual examples of connected hexagons.

How do I find out when aerial photos were taken of specific locations in the Imagery with Metadata map?

You can get resolution, collection date, and imagery source by using the Imagery with Metadata map zoomed in to a large scale (generally about k and below). Open the map in Map Viewer (formerly known as Map Viewer Beta), Map Viewer Classic (formerly known as Map Viewer), or ArcGIS Desktop. To get the aerial imagery information, be sure you are zoomed in to a large scale. In Map Viewer or Map Viewer Classic, click the map to see a pop-up with the information. In ArcGIS Desktop, click Identify and click the map to see a pop-up with the information.

Bing Maps

Can I use Bing Maps with ArcGIS?

Yes. ArcGIS products are Bing Maps ready. To use Bing Maps, you must first contact Microsoft to obtain a Bing Maps key. Once you have a key, input it into your product or application. Once you input your Bing Maps key, your ArcGIS product or application will be able to access Bing Maps. If you have questions about using Bing Maps with ArcGIS, contact your account manager or local Esri office.

How do I contact Microsoft to get pricing information?

Is there a fee to use Bing Maps?

There may be a fee based on your usage level and use cases.

How do I add a Bing Maps key to my web app?

In your code, you need to search for the Bing Maps key you are currently using. You will need to replace this key with the one you get from Microsoft.

How do I add a Bing Maps key to my organization?

An administrator in your organization needs to configure the map with your Bing Maps key. Once Map Viewer Classic (formerly known as Map Viewer) is configured for Bing Maps, you can add Bing basemaps to your maps.

Can I take Bing Maps offline?

No. Bing Maps is not supported for offline use.

What maps other than Bing Maps can I use?

ArcGIS Online includes a number of maps you can use free of charge:

  • World Imagery is updated frequently and provides 1-meter or better satellite imagery for many parts of the world.
  • Imagery with Labels and Transportation is the World Imagery basemap with layers for labels and streets. If you have your own streets and labels, you can turn off these layers.
  • ArcGIS Online gives you access to a number of different basemaps that you can use in your projects. The World Street Map, World Topographic Map, Light Gray Canvas Map, and National Geographic World Map provide a range of cartographic options to meet your needs.

For the latest content updates, see ArcGIS Blog.

Developer resources

What environments are available for building custom apps?

You can use ArcGIS API for JavaScript, ArcGIS Runtime SDK, ArcGIS Configurable Apps, and app builders to create interactive and compelling mapping apps. For more information, see ArcGIS Developer.

Do I need an account to use ArcGIS API for JavaScript and ArcGIS Runtime SDK?

Yes. Sign in to ArcGIS Developer with your ArcGIS organizational account to access ArcGIS API for JavaScript and ArcGIS Runtime SDK. To use these resources for development and testing only, you can sign up for a free account at arenaqq.us Before your apps go to production, you will need to upgrade your free account to a paid plan.


How do I give my colleagues permission to modify content I share with them?

You can allow other people in your organization or partnered organizations to update your maps, apps, layers, and files, as well as their item details, by sharing the items with a shared update group. When you share items to a shared update group, you allow group members to update any items shared with the group. This includes modifying an item's details or updating its content.

Allowing other members to update your shared content is useful in many scenarios. For instance, it makes it easy for a team of shift workers to share responsibility for updating a critical web map—adding or removing layers, changing symbols, updating the map's description, and so on.

To allow others to update your shared items, do the following:

  1. Create a shared update group as follows:
    1. Ensure that you have privileges to create groups with update capabilities.
    2. Create a group. For the group designation, turn on the Shared update toggle button.

      This option is only available when creating groups and when membership in the group is only open to those who are invited or request and are approved to join.

    3. Add yourself and the colleagues with whom you want to collaborate to the group.

      You can only invite members who have privileges to create, update, and delete content.

  2. Share your items with the group.

    You remain the owner of the items, and other group members can update them, including changing the item details and updating the content.

Only the owner (or administrator) of the item can perform the following actions on the item (not all actions apply to all item types): delete, share, move, change owner, change delete protection, publish, register an app, overwrite data in hosted feature layers, and manage tiles in hosted tile layers.

How can I share my data with a member of another organization?

You can share content with members of another organization by entering a partnered collaboration with that organization. Once in a partnered collaboration, you can invite designated members of that organization to groups, including shared update groups, and share your items with them.

To share content with members of another organization without establishing a partnered collaboration, you can do so by inviting them to a group you belong to or own and sharing your items with the group. You can invite a user to the group if the following conditions are met:

  • The person you are inviting has an ArcGIS Online account.
  • The person you are inviting has privileges to join groups.
  • The person you are inviting has the same type of account that you have. For example, if you have an organizational account, you can only invite people with organizational accounts to join your group.
  • The group is not a shared update group.

    When you invite a member from another organization to your group without first establishing a partnered collaboration, only those who have set their profiles to be visible to the public will be found in a search. However, you can still invite users who haven't set their profiles to be public if you enter their exact user name.

Your organization can also share content with other organizations by setting up a distributed collaboration. ArcGIS Online organizations can participate in collaborations with ArcGIS Enterprise and later portals to replicate items and data across the enterprise.

What is the best way to give some organization members the ability to edit a publicly visible hosted feature layer without enabling editing on the layer for everyone?


What is a verified organization?

Verified organizations have requested that Esri validate their identity. Organizations that are verified by Esri can designate items they share with the public as authoritative. Designating public items as authoritative allows others inside and outside your organization to find reliable, up-to-date content. These items are also boosted in search results and are returned when the Authoritative Status filter is applied. When public items are designated as authoritative, they are identified with an authoritative badge and the name of the organization as the item owner. (The item owner link displays a pop-up with information about the organization and links to its gallery and home pages.)

The following types of organizations can't be verified:

  • Personal Use
  • Trials
  • Evaluations
  • Developer Accounts

As an organization administrator, you must do the following to have your organization verified:

  1. Ensure that your organization name is identical to your customer name. If they are different, your organization can't be verified.
  2. Ensure that anonymous access is enabled for your organization. If your organization is private, it can't be verified by Esri.
  3. Submit a request to become a verified organization. An email will be sent to Esri Customer Service, who will verify that your organization name is the same as your customer name.
  4. Wait 24 to 48 business hours for the Verify organization button to be replaced by a Verified badge, indicating that your organization is now verified.

    Esri cannot verify your organization if your organization name does not match your customer name. If these names are different, you will receive an email notification from Esri and the Verify organization button will remain available. To resolve this issue, update your organization name to match the customer name and click Verify organization again to restart the organization verification process.

    Once your organization is verified, the organization name cannot be changed, and anonymous access cannot be disabled. Verified organizations that need to change their organization name or disable anonymous access for any reason must have their verified status removed before making these changes.

What are the considerations for changing the short name of my organization and what should I do after I change it?

Changing the short name is intended for new organizations with little content or customization. Consider this change carefully if your organization is more mature and has extensive content. You cannot change the short name if any member has a license checked out or if your organization has Open Data enabled.

If you do change the short name, inform your members that the URL has changed and that they may need to sign in again and update any bookmarks pointing to the organization. You may also need to manually update the URLs of your hosted content and resources, including web apps. For example, you can update the URL of your hosted web apps through the Settings tab of the item page. In addition, if your organization has existing distributed collaborations, you must remove and recreate them, invite ArcGIS Enterprise participants to the newly created collaborations, and reestablish trust.

How can I limit access to content for some organization members, such as external contractors?

To limit access to content—for example, content of a highly sensitive nature—for some members of your organization, you can assign them a custom role with the following privileges turned off:

  • Content: View content shared with the organization
  • Groups: View groups shared with the organization

Members who are not granted these privileges can only view content shared with groups they belong to, while being restricted from viewing other organization content.

To restrict certain members from seeing a list of members in the organization and accessing the Organization page, turn off the following privilege:

How does the Esri User Experience Improvement program work?

ArcGIS Online works continuously to improve its products, and one of the best ways to determine what needs improvement is through customer feedback. The Esri User Experience Improvement program (EUEI) allows your organization to contribute to the design and development of ArcGIS Online. The program collects information about the usage of ArcGIS Online, including hardware and browser characteristics, without interrupting work. The program is completely optional and anonymous; none of the information collected is used to identify or contact members of your organization.

The collection and submission of information is completely unobtrusive and has no impact on members' use of the software. Examples of the data that is collected include whether search results were clicked, how often users cancel out of a window, errors encountered in workflows, session length, and hardware and browser details.

The Esri User Experience Improvement program does not collect any personal information related to your organization or its members, such as your IP address, login information, and specifics about any data you may be using. The program does not actively collect any information outside ArcGIS Online.

Regardless of your organization's participation in this program, ArcGIS Online, by its nature as a cloud offering, does have information about usage such as credits used and items created. Esri values the privacy of its customers, distributors, and business partners, as it is a principal component of establishing trust. All information collected by Esri is protected by the EsriPrivacy Policy.

How do I make a layer available as a basemap in my organization's basemap gallery?

If you have privileges to create and share content with your organization and have access to your organization's basemap gallery group, you can add certain types of layers to the basemap gallery. To add and share a layer, complete the following steps:

  1. Sign in to your organization and open Map Viewer.
  2. Add the layer to your map as a basemap.
  3. Save the map.
  4. Click Share and share the map with the basemap gallery group and with your organization. If necessary, update the sharing properties to share the layer in the same way.

    The basemap gallery group is specified through the Basemap Galleryconfiguration setting.

On the Licenses page, I see an app called Organization Website. What does this include?

The Organization Website app license gives members access to their organization's home, content, gallery, groups, and organization pages. Members can work with their organization's content and members through their ArcGIS Online organization website.

What is a contrast ratio?

Feedback on this topic?

Источник: [arenaqq.us]

TLE Hoodie

With the release of Junkie, the latest single from The Last Element, the band has decides to donate all revenue for this single to a good cause and set up the TLE foundation. 

The band explains: "We want to deliver on the message 'together we are stronger'. With setting up the TLE foundation, we want to start raising money for causes we believe in, no matter how big or small. So, got a cause you want us to supper, reach out to us!
With Junkie we want to start out small and direct. As the lyrics in Junkie are very personal to Jasper, describing the addiction of his oldest sister, the struggle, the battle between love and letting go and acceptance. We would like to help out, therefore, we think it's fair to donate the revenue to the parents supporting the individual. There is a possibility to join in and donate any amount of money, small of big, via the tip jar on the bands' website 'Donations' - with the attention of Junkie in the comment box. Thanks for your support and please read the full detailed statement from Jasper, lead singer of The Last Element below." 

Jasper's personal statement: "Today we'll release a very personal song. A song that I had a hard time writing, named Junkie. Junkie is only a little peck of the story about my oldest sister. Addicted by the age of 18 and went through hell and back, just to get her fix. She wasn't the only one who went through hell and back though, we (the family) all went with her. They say that every home carries a cross, a dark secret, a burden. We as a family carried a little more than the average household. But I like to believe that you can come out of that situation stronger, if you keep fighting. But this battle is one that I can't fight anymore. Junkie is a song about the rage build-up inside of me, inside of all of us. We keep giving and giving, but there is no end to it. Only acceptance. And I get it I get is sister, the weight on your shoulders is too much for anyone to bear, too much to keep clean, to stay sober. But the saddest part of this story, is that the road only gets harder and the weight only gets heavier. I always believed that you would get through it all, fight your way out. But just like most beliefs, they went in time and so did mine. Just know that if you ever want to come back to us, we will always embrace you with open arms. This story is a tragic one, however, not a rare one. There are so many stories like mine, we want to give something back for the community. But we are just a small band, what can we do? Well, our message is together we are stronger. Together, we will set up the TLE foundation. With many giving, a little we can raise a lot, and change lives. " 

"The first project being a very personal one. My sister has been on and off the streets, in and out of jobs. That means she doesn't have a lot of money to spend. My parents pay most of my sister's expenses, but after all these years, I want to give something back to them. Therefore, we have decided to set up a trust fund for my parents and sister. We will donate all the revenue we earn through this song. That means all the revenue from streaming income, merchandise sales and single sales." 

If you want to support this cause, everything is sincerely appreciated, no matter how big or small. You can donate money through our tip jar, by buying merchandise (either way via our website or through our Bandcamp page) and streaming or purchasing our song. Most of all, please share our story with as many people as you can. By getting the word out, we hope to reach as many people as possible. Being addicted is a disease, it's not easy to cure, but remember you're never alone, either as the one being addicted or the ones loving someone who is. We all share a fate together and with the help of others, we can always with a way. 

If you need help or want to talk about your story with us, please reach out to us via Instagram DM, Facebook Messenger or Email. We are there if you need us.

With love, 
Jasper & The Last Element

Listen to Junkie here

Источник: [arenaqq.us]

Transcript :

Chemistry in its element: scandium


You're listening to Chemistry in its element brought to you by Chemistry World, the magazine of the Royal Society of Chemistry.

(End promo)

Meera Senthilingam

This week, an element whose existence had been expected, Here's David Linsay.

David Lindsay

Scandium, atomic number It is the first of the transition metals, and its discovery is entwined with that of vertical neighbours yttrium and lanthanum. The Swedish island of Resarö, near Stockholm, became a hotbed of elemental discovery in the late eighteenth, and early nineteenth, centuries. A quarry near the village of Ytterby yielded two different mineral ores, from which the seventeen so-called "rare earth" elements were eventually identified, those being scandium, yttrium and the fifteen lanthanide elements.

In , a Lieutenant Arrhenius found an unusual black rock near the town of Ytterby. He passed this on to the famous Finnish scientist Johan Gadolin, and the story of the discovery of the rare earths began.

In , Lars Nilson, isolated the oxide of a new metal element from the minerals gadolinite and euxenite. Nilson was a student of the legendary Jacob Berzelius, himself discoverer of many elements. Nilson named this oxide scandia, after Scandinavia. The discovery of this element was especially notable, as, seven years previously, Mendeleev had used his periodic table to predict the existence of ten as yet unknown elements, and for four of these, he predicted in great detail the properties they should have. One of these four, Mendeleev predicted, should have properties very similar to boron, and he named this element "ekaboron", meaning "like boron". The metal of this new oxide, scandia, was indeed found to have similar properties to this "ekaboron", thus demonstrating the power of Mendeleev's construction. For example, Mendeleev predicted the element's molecular weight would be 44 and that it would form one oxide with formula Eb2O3; scandium has molecular weight 45, and forms scandium oxide, Sc2O3. Some of Mendeleev's predictions were even more detailed. He predicted that the carbonate of ekaboron would not be soluble in water, which scandium carbonate is not. He even made a prediction related to the discovery of the element - that it would not be discovered spectroscopically. Indeed, scandium produces no spectroscopic lines, so could not be identified by this method of analysis. However, it was another Swedish chemist, Per Theodor Cleve, who was also working on the rare earths, who noticed the similarity between Nilson's new element, and the ekaboron predicted by Mendeleev. Despite the discovery of the oxide of this new element, it would take almost another sixty years until pure, elemental scandium was prepared, being made by electrolysis of scandium chloride in the presence of lithium and potassium, at high temperature.

Scandium is the first of the transition metals. Many of the transition metals exhibit a very rich and varied chemistry, due to the fact that they can exist in a wide variety of oxidation states. Scandium, however, is limited to the plus three oxidation state, meaning its chemistry is not quite as diverse as some of its transition metal counterparts.

Scandium is very much a late starter compared to many of the other elements, due to its relatively low occurrence and the difficulty in obtaining it from its ores. For example, it wasn't until the s when the first pound, or grams, of high purity scandium was obtained. Compounds of scandium find use in organic chemistry. Like many of the lanthanides, the trifluoromethansulfonate, or triflate, of scandium finds use as a so-called Lewis acid, accepting a pair of electrons from a suitable organic molecule, and activating the organic molecule to take part in highly efficient and selective chemical reactions. Scandium is also the source of artificial natural light. This might sound like a contradiction, but when scandium iodide is added in very small amounts to mercury vapour lamps, it produces light that is very similar to natural sunlight, and these lamps are used for applications ranging from floodlights to film projectors.

Scandium is added in small amounts to aluminium, to produce an alloy which is very light, yet very strong. As such, it has found use as a material for high performance road and mountain bikes. The advent of new frame materials, such as carbon fibre and titanium, has somewhat lessened the popularity of scandium alloy bike frames, but many such frames are still being made today.

So, that's Scandium - the element first found in the late eighteenth century, and not isolated pure and in large quantities until the middle of the twentieth century. One which helped demonstrate the power of the periodic table, and which you'll find illuminating football fields, and in the frames of mountain bikes.

Meera Senthilingam

And bringing us into the light there, was Reading University's David Lindsay, with the bright, strong chemistry of scandium. Now next week an element providing one more punch in the fight to protect our environment.

Simon Cotton

As everyone knows chlorofluorocarbons, CFCs for short, have been widely used in the past for fridges and freezers as the refridgerant gas. CFCs contribute to both depleting the ozone layer and they are also greenhouse gases. Due to this their use in the developed world has largely ceased, meaning a good, environmentally friendly replacement is needed. Gadolinium may prove useful to the fridges of the future due to a process known as magnetic refridgeration or adiabatic demagnetisation.

Meera Senthilingam

And join Uppingham School's Simon Cotton, to find out how magnetic refridgeration using the ions of gadolinium will be keeping our food cool in the future, in next week's chemistry in its element. Until then, I'm Meera Senthilingam and thank you for listening.


Chemistry in its element is brought to you by the Royal Society of Chemistry and produced by arenaqq.us There's more information and other episodes of Chemistry in its element on our website at arenaqq.us

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