Problem: The Kernel Density Tool Generates a Blank Output Raster in ArcGIS Pro

Description

When calculating the density of features for a feature layer using the Kernel Density tool in ArcGIS Pro, a blank output raster is generated, as demonstrated in the image below.

The output raster layer is displayed in the Contents pane layers list but the output does not display in the ArcGIS Pro map.

Cause

This issue occurs when the feature layer coordinate system is a geographic coordinate system. The search radius in the Kernel Density tool calculates the density based on the linear unit of the projection of the output spatial reference. Thus, the coordinate system of the feature layer must be a projected coordinate system.

Note:
To check the coordinate system of the feature layer, refer to the Tip section in ArcGIS Pro: Specify a coordinate system.

Solution or Workaround

To resolve the issue, project the feature layer to a projected coordinate system using the Project tool, and calculate the density of the features using the Kernel Density tool in ArcGIS Pro.

Open the ArcGIS Pro project.
In the Geoprocessing pane, search for and click the Project tool. Refer to ArcGIS Pro: Run a tool in the Geoprocessing pane for steps to do this.

When searching the tool in the Geoprocessing pane, the Project tool appear as the first search result named as Project (Data Management Tools).

In the Project pane, under the Parameters tab, select the feature layer from the Input Dataset or Feature Class drop-down list. In this example, Contour is selected.
Provide a name for Output Dataset or Feature Class, and click Browse…. to specify the location for the output feature class.
In Output Coordinate System, click Select coordinate system to open the Coordinate System window.
In the Coordinate System window, expand the Projected Coordinate System node, and select the coordinate system. In this example, WGS 1984 Web Mercator (auxiliary sphere) is selected. Click OK.

In the Coordinate System window, there three groups under XY Coordinate System Available which are Layers, Geographic Coordinate System, and Projected Coordinate System. When selecting a coordinate system, it is displayed in the Current XY box. In this example, WGS 1984 Web Mercator (auxiliary sphere) is selected.

In the Project pane, click Run. The new feature class created by the Project tool is automatically added to the map.

In the Project tool, there are three parameters to be filled before running the tool, Input Dataset or Feature Class, Output Dataset or Feature Class, and Output Coordinate System. Click the Select coordinate system icon to open the Coordinate System window.

In the Geoprocessing pane, search for and click the Kernel Density tool.
In the Kernel Density pane, under the Parameters tab, select the new feature layer from the Input point or polyline features drop-down list to calculate the density of its features. Refer to ArcGIS Pro: Parameters for more information.

In the Kernel Density tool, the new feature layer created from the Project tool is selected from the Input point or polyline features drop-down list.