Creating training samples

To create training samples, use the training sample drawing tools on the Image Classification toolbar.

Steps:

The steps below show how to create training samples with the Image Classification toolbar:
1. On the Image Classification toolbar, choose an appropriate image layer in the Layer list.
2. Click one of the drawing tools on the Image Classification toolbar. Notice that there are three drawing tools available, for drawing polygons, circles, and rectangles.
3. In ArcMap, identify an area that belongs to a known class. Draw a training sample to enclose it. The following image shows a polygon training sample in ArcMap:
4. Once you finish drawing the training sample, a new class is created in Training Sample Manager with a default name, value, and color. Open Training Sample Manager and change the class name, value, and color if desired.
5. Repeat steps 2 to 4 to create a few more training samples to represent the rest of the classes on the image. The following is what Training Sample Manager looks like after five classes are created: