Manage output layers

Real-time and big data analytics in ArcGIS Velocity can write features to new or existing ArcGIS layers. The layers created can be managed in the Velocity application on the Layers page. Once created, feature, map image, and stream layers will be available for use in Velocity and more broadly in your ArcGIS maps and applications.

Note:

Output layers created by either real-time or big data analytics will not appear on the Layers page until the analytic is started and successfully creates the output.

Working with output layers

To work with the output layers created by a real-time or big data analytics, click Layers under the OUTPUT section in the main menu of the Velocity application. From the Layers page, you can view item details as well as open the corresponding REST endpoint of a layer. Layers can be filtered using search available in the upper right and viewed in either a table or grid format.

  • To view or edit the associated item details in ArcGIS Online, either click the name of the layer in the list or expand the menu action button and then click View item details. This will open a new browser tab with the associated ArcGIS Online item details for the layer. Here you can modify properties of the layer including sharing settings, tags, item description, and more.
    Note:

    Changing sharing or ownership on items created by Velocity may take up to 5 minutes to take effect.

  • To access the associated REST API endpoint of the layer, expand the menu action button and click Open in REST Services directory. The service endpoint will open in a new browser tab.

View output layers

To view the output layers created by a real-time or big data analytics, click Layers under the OUTPUT section in the main menu of the Velocity application. From the Layers page, you can view the title type and corresponding dataset associated with each layer. Layers can be filtered using the search available in the upper right and viewed in either a table or grid format.

  • To view an output layer in a web map, click Open in map viewer. A new browser tab will open and display a web map with the output layer. For information on changing symbology and rendering options for stream or feature layers, see Visualize stream or feature layers.
  • To view or edit the output map image layer with various renderers and aggregations, click Edit. A new browser tab will open with the output layer and various viewing options available. For more information, see Visualize map image layers.

Delete output layers

When working with output layers in Velocity, you may at times need to delete a feature layer, map image layer, or stream layer created by an analytic. Take care when deleting a feature layer, since doing so will delete the feature layer and the data.

Note:

Deleting a feature layer cannot be undone and all data will be deleted.

When deleting a map image layer, the actual data is not deleted. A map image layer is simply a visualization of the data and is tied to lifecycle of the feature layer. Therefore, the map image layer can be safely deleted without deleting the underlying data.

Delete an output layer from the Layers page

To delete a layer from the Layers page, click the action button and then click Delete. You will be prompted to confirm you want to delete the layer.

Note:

If deleting a feature layer, the data and any associated map image layers will also be deleted. This action cannot be undone and all data will be deleted.

Delete an output layer in an analytic

Feature layers created by real-time or big data analytics can also be deleted from the analytic editor if the analytic is not actively running. To delete a layer in the analytic, open the real-time or big data analytic with the layer, right-click the output node (in model view) or click the action button (in workflow view) and choose Delete feature layer. You will be prompted to confirm you want to delete the layer.

Note:

If deleting a feature layer, the data and any associated map image layers will also be deleted. This action cannot be undone and all data will be deleted.

Note:

Stream layers cannot be deleted in an analytic.

Delete protection

If you have enabled delete protection on any items created in Velocity and you try to delete the item from the Velocity application, an error message will be displayed indicating delete protection must be turned off from the item details page in order to delete the item.

If using delete protection on output layers, the recommended best practice is to add delete protection on both the feature layer and its associated map image layer. If a feature layer does not have delete protection enabled but the associated map image layer does, if the feature layer is deleted, the map image layer will be remain but will not have any associated dataset. This will be addressed in a later release.