I have downloaded numerous hdf files from an ftp site. Half of them were level 1 and the rest were level 2. Lvl1 format is Afile.A1_AC.sample.hdf and the lvl 2 format is: Afile.A1_AC.sample.hdf. How will I do a batch process in projecting all the level2 files only? How will I filter these files and create a new directory? Here's what I have so far: def inputData(self, event): def findSDS (path, filter): for root, dirs, files in os.walk(path): for file in fnmatch.filter(files, filter): yield file for sds in findSDS('/path/to/file', '*.hdf'): inSDS = 'HDF4_SDS:' + '/path/to/file' + '/' + sds + ':01' path = 'D:/new/dir' outTIFF = path + sds + '.tif' cmd = 'gdalwarp -geoloc -t_srs "+proj=longlat +datum=WGS84" -te 113.205 1.120 157.105 2.005 %s %s' % (inSDS, outTIFF) os.system(cmd) os.mkdir(path) ---------- (tried calling .bat from the python script and run the script. And it just created an empty/new directory(out_path). Tried calling the .bat from the cmd line and here's the output: C:\sample>project.bat C:\sample>set in_path=D:\path\to\file C:\sample>set out_path=D:\newfolder C:\sample>md D:\newfolder A subdirectory or file D:\newfolder already exists. C:\sample>cd D:\path\to\file C:\sample>FORFILES /m *A1_AC*.hdf /C "cmd /c gdalwarp -geoloc -t_srs "+proj=longlat +datum=WGS84" -te 113.205 1.120 157.105 2.005 @path D:\[email protected]" ERROR: Invalid argument/option - '+datum=WGS84 -te 113.205 1.120 157.105 2.005 @path D:\[email protected]'. Type "FORFILES /?" for usage. ---------- C:\sample>project.bat C:\sample>set in_path=D:\path\to\file C:\sample>set out_path=D:\newfolder C:\sample>md D:\newfolder C:\sample>cd D:\path\to\file C:\sample>FORFILES /m *A1_AC*.hdf /C "cmd /c gdalwarp -geoloc -t_srs "+proj=longlat +datum=WGS84" -te 113.205 1.120 157.105 2.005 @path D:\[email protected]" ERROR: Files of type "*A1_AC*.hdf" not found. ---------- C:\sample>projected.bat C:\sample>set in_path=D:\path\to\file C:\sample>set out_path=D:\newfolder C:\sample>md D:\newfolder C:\sample>cd /d D:\path\to\file C:\sample>FORFILES /m *A1_AC*.hdf /C "cmd /c gdalwarp -geoloc -t_srs "+proj=longlat +datum=WGS84" -te 113.205 1.120 157.105 2.005 @path D:\newfolder/@fname.tif" ERROR 1: Translating source or target SRS failed: '+proj=longlat Tried running the gdalwarp in the cmd line and it was successful: C:\sample>gdalwarp -geoloc -t_srs "+proj=longlat +datum=WGS84" -te 113.205 1.120 157.105 2.005 HDF4_SDS:hdf:"Afile.A1_AC.sample.hdf":01 sample.tif Creating output file that is 1941P x 1670L. Processing input file HDF4_SDS:hdf:"Afile.A1_AC.sample.hdf":01. 0...10...20...30...40...50...60...70...80...90...100 - done.