Managing training samples

During the process of creating and evaluating training samples, you will need to use the tools on the Training Sample Manager to maintain the list of classes. For example, you may need to change the class name, value, and color. Also, classes may need to be merged, deleted, reorganized, and so on. See the following on how to perform some common training sample management tasks.

Managing training samples

The first three tools on the toolbar are used for managing the training samples.

Clearing all training samples

1. In the Training Sample Manager, click the Clear Training Samples button .

Loading training samples

1. In the Training Sample Manager, click the Load button . A file browser dialog box appears.
2. In the file browser dialog box, select a training sample feature class and click Add.
   Note:

   When you load training samples from a feature class, the loaded training samples are appended to the existing list of training samples. If you do not need the existing training samples, you can click the Clear Training Samples button to remove them before you load the feature class.

Saving training samples

1. In the Training Sample Manager, click the Save button . A file browser dialog box appears.
2. In the file browser dialog box, navigate to the desired location and specify a name for the feature class or shapefile, then click Save.

Managing classes

Other tools on the toolbar are used for managing the classes.

Merging classes

1. In the Training Sample Manager, select two or more classes that you want to merge.
2. Click the Merge button .
   Note:

   The Split button does the opposite of the Merge button. It splits a class into multiple classes so that each class has one training sample.

Deleting classes

1. In the manager, select the classes you want to delete.
2. Click the Delete button .

Moving a class up or down

1. In the manager, select the class you want to move.
2. Click the appropriate Up button or Down button .

Renumber all classes in ascending order

1. In the manager, click the Reset class values button .

Renumber an individual class

1. In the manager, click in the Value cell of a row. The cell becomes editable.
2. Type the new integer value and press Enter.

Rename a class

1. In the manager, click in the Class Name cell of a row. The cell becomes editable.
2. Type a new name and press Enter.

Changing the display color

1. In the manager, click in the Color cell of a class. A color selector is shown.
2. Pick a color from the color selector. The color of the training sample is updated in the ArcMap display area and any opened evaluation window.