Open Pixel Information
Opens the pixel information window. During sampling, you can already create some dependent output maps for the Classify operation using the current sample set as input. When creating the dependent output maps, do not mark the Show check box in the dialog boxes; just create the definition for the output maps.
When you add these dependent maps to the pixel info window, you can already see the results of the classifications while sampling.
For more information, see Pixel information window : functionality.