User Manual - pancroma

You now have as set of 12 co-registered band files for you scenes. Select‘Close Graphics Windows and Reset’ and move on to the next step: changedetection. To start the change detection analysis, select ‘File’ | ‘Open’ and openyour 12 band files in this order:Group 1 bands 1-7Group 2 bands 1-7In this example the order would be:changeTestband_1-Group1.tifchangeTestband_2-Group1.tifchangeTestband_3-Group1.tifchangeTestband_4-Group1.tifchangeTestband_5-Group1.tifchangeTestband_7-Group1.tifand thenchangeTestband_1-Group2.tifchangeTestband_2-Group2.tifchangeTestband_3-Group2.tifchangeTestband_4-Group2.tifchangeTestband_5-Group2.tifchangeTestband_6-Group2.tifNow select ‘Spectral Analysis’ | ‘Change Analysis’ | ‘Landsat’ | ’12 File VectorDistance’. The TOA Reflectance Data Form will appear. Enter the values for theSolar Elevation Angle and Acquisition Date for the first Landsat Scene asdescribed in Section 51 into the form and select ‘OK’. All 12 of your band fileswill be read into memory. The TOA form will again appear. Enter the SolarElevation Angle and Acquisition Date for the second Landsat Scene and select‘OK’.IMPORTANT NOTE: The satellite metadata will typically not be the same for twoLandsat scenes even if the path and row numbers are the same. It is importantto enter the correct values for each scene when prompted so that the TOAreflectances are computed accurately. Select ‘OK’. The change detection plotwill be computed and displayed. The plot along with the base image is shownbelow. (Note that you can switch views between the distance plot and the baseimage using the ‘Switch Images’ menu on the Color Distance Form.277