Summary
Generating random points within a specified area is useful for analyzing spatial relationships and impact areas. Certain areas of a raster layer can be clipped for better spatial analysis and data visualization by converting it to a vector layer before clipping it using the Clip tool. This article provides a workflow on how to clip a random point feature within a polygon feature from a raster layer in ArcGIS Pro.
Procedure
- Open the ArcGIS Pro project.
- Create a specified number of point features from the point feature layer using theĀ Create Random Points tool.
- On the ribbon, click the Analysis tab. In the Geoprocessing group, click Tools.
- In the Geoprocessing pane, search for and click Create Random Points (Data Management Tools).
- In the Create Random Points pane, for Output Location, click Browse and specify a location for the output random point feature.
- For Output Point Feature Class, specify a name.
- For Constraining Feature Class, click the drop-down list and select the point feature layer.
- For Number of Points (value or field), specify the number of points to be randomly generated. In this example, 100 points are specified.
- Click Run.
- Create a buffer with a specified distance for the point features using theĀ Buffer tool.
- On the ribbon, click the Analysis tab. In the Geoprocessing group, click Tools.
- In the Geoprocessing pane, search for and click Buffer (Analysis Tools).
- In the Buffer pane, for Input Features, click the drop-down list and select the output point feature layer created in Step 2.
- For Output Feature Class, specify a name and location.
- For Distance [value or field], select Linear Unit from the drop-down list and specify the distance and the unit. In this example, 100 meters is specified.
- Click Run.
- Convert the raster layer to a polygon feature using the Raster to Polygon tool.
- On the ribbon, click the Analysis tab. In the Geoprocessing group, click Tools.
- In the Geoprocessing pane, search for and click Raster to Polygon (Conversion Tools).
- In the Raster to Polygon pane, for Input raster, click the drop-down list and select the raster layer.
- For Output polygon features, specify a name and location.
- Click Run.
- Extract the buffer area that overlays within the polygon feature using the Clip tool.
- On the ribbon, click the Analysis tab. In the Geoprocessing group, click Tools.
- In the Geoprocessing pane, search for and click Clip (Analysis Tools).
- In the Clip pane, for Input Features or Dataset, click the drop-down list and select the polygon feature layer created in Step 4.
- For Clip Features, click the drop-down list and select the output feature layer created in Step 3.
- For Output Features or Dataset, specify a name and location.
- Click Run.
The clipped random point features from the raster data within the polygon layer are displayed on the map.