User Manual - pancroma

IMPORTANT NOTE: The 'Compute Common Extents' utility determines theUTM coordinates of the overlap area for two images. Once it does this it copiesthe coordinates to the coordinate text boxes in the Subset Data Entry form. Inorder to subset single images to those coordinates, you need to follow thatoperation by (without exiting the program):1) Selecting 'Close Graphics Coordinates and Reset'. This closes both filesbut retains the coordinate information in the text boxes.2) Then select 'File' | 'Open' and re-open one of your two files.3) Select 'Band Combination' | 'Subset Images' | 'Subset One Band'. Whenthe Subset Data Entry form becomes visible you should see the cornercoordinates already entered. I attached a picture of what the form shouldlook like at this point.4) Select the 'Select by Coordinates' radio button.5) When you select 'Enter' the subset will be computed and displayed.6) Now select 'Close Graphics Window and Reset.Repeat steps (2) through (5) for the second image. The UTM coordinates willpersist in the text boxes for as many images as you wish to subset.44