How do I find the lat/lon of each pixel inside a landsat scene. Either the equations for converting i,j to lat/lon or just a bunch of files, one for each scene. Background: I have downloaded a bunch of scenes from Greenland and now I want to compare them to some MODIS data. MODIS provides files with lat/lon for every pixel.
You could use GDAL_Translate -of XYZ (http://www.gdal.org/frmt_xyz.html) to convert the file to gridded X,Y,Z format. Each cell will be represented by an X,Y coordinate followed by Z value as comma separated, optionally with a header line.
If the file is multiband then just use the first band, that should be enough for comparison.