User Manual - pancroma

The first step is to subset the two Landsat scenes to an arbitrary subset size.The corner coordinates of the two subset scenes should be the same. This isrelatively easy to do because PANCROMA will “remember” subset coordinatesfrom a first subsetting operation so that you can apply them to a secondsubsetting operation. Lets see how this works.I opened my first Landsat scene, files L71074091_09120050303_B10.TIF,L71074091_09120050303_B20.TIF, L71074091_09120050303_B30.TIF,L71074091_09120050303_B80.TIF and L71074091_09120050303_B50.TIF byselecting ‘File’ | ‘Open’ and opening them in that order. I then selected ‘BandCombination’ | ‘Subset Images’ | ‘Subset Five Images’. My subset coordinateswere:ULX is: 555990ULY is: -4857180LRX is: 573330LRY is: -4878240These coordinates were chosen to include some land and some water, since thisscene includes both. I saved the files in TIFF format by selecting ‘File’ ||‘SaveSubset Images’ | ‘GeoTiff’. PANCROMA TM automatically saved them as:minorBandAband1.tifminorBandAband2.tifminorBandAband3.tifminorBandAband4.tif (this is the panchromatic band)minorBandAband5.tif (this is the NIR band)I then selected ‘Close Graphic Images and Reset’ to reset PANCROMA.I then repeated the process for files p074r091_7dt19991216_z59_10.tif,p074r091_7dt19991216_z59_20.tif, p074r091_7dt19991216_z59_30.tif,p074r091_7dt19991216_z59_40.tif and p074r091_7dt19991216_z59_50.tifTo do this I opened the files as before and again selected ‘Band Combination’ |‘Subset Images’ | ‘Subset Four Images’. When the Subset Data Entry Formappeared, the corner coordinates listed above were already entered into thecoordinate text boxes. I checked the ‘Select By Coordinates’ radio button andclicked ‘Enter’. The subset bands for the second scene were computed. I savedthese files as before in TIFF format as:minorBandBband1.tifminorBandBband2.tifminorBandBband3.tifminorBandBband4.tif (this is the panchromatic band)minorBandBband5.tif (this is the NIR band)359