Available with Spatial Analyst license.
The Image Classification toolbar provides four tools for creating training samples as polygons, rectangles, circles, and segments. The training sample editing tools are shown in the following image.
Training sample drawing tools
ArcGIS Desktop is in mature support and will be retired March 1, 2026. There are no plans for future releases of ArcGIS Desktop, and it is recommended that you migrate to ArcGIS Pro. See Migrate from ArcMap to ArcGIS Pro for more information.