-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 06/04/12 11:27, Swapnil Chaudhari wrote: > Hi Nathan, > > Thanks for your response. In fact I was reading your blog yesterday itself. > gdal_calc.py may be > of my help. I will explore that option. > > I would be happy to receive a little more elaboration on how to write shell > script for > automating this calculation for entire directory? I am aware that you have > already written it > in on your blog at DEM generation. However, if you can suggest how to write > shell script > specific to once need would be really great.
in a shell you can use the for construct to iterate through all files in a directory: for FILE in *.asc do echo $FILE done and in the loop you can do whatever you want. Cheers, Rainer > > Thanks a ton! > > Swapnil o__ _> /__ (_) \(_)....... live healthy > > > > On Fri, Apr 6, 2012 at 12:58 PM, Nathan Woodrow <[email protected] > <mailto:[email protected]>> wrote: > > You can try gdal_calc.py > > http://smathermather.wordpress.com/2011/12/01/gdal_calc-py-raster-calculator-using-numby-functions/ > > - Nathan > > On Fri, Apr 6, 2012 at 4:35 PM, Swapnil Chaudhari <[email protected] > <mailto:[email protected]>> wrote: > > Dear QGIS User Team, > > I have sets of grid files, corresponding to monthly mean temperature for few > years. > > I am working on scaling the raw data and modifying the extent of output file > from > -180,180,-90,90 to -180,180,-60, 90. > > The process of doing this with Raster Calculator is straight and very simple, > where you have to > give raster calculation expression, output extent and name of output with its > format. The > scaling equation for doing so e.g. is, (cru_tmp_clim_1961-1970 > <tel:1961-1970>_05@1*0.51)-85 > > Although very simple, its very time consuming since I have data for around 6 > to 7 dacads. > > I would be very glad if some one can help me find the python script for doing > this in loop. So > that I can process whole directory in single go. > > In addition to that, I would also request you to inform mannaul, guide to > learn python > scripting for simple raster and vector operations. > > You efforts in helping with this is much appreciated. > > Thank you very much. > > Best, > > Swapnil o__ _> /__ (_) \(_)....... live healthy > > > _______________________________________________ Qgis-user mailing list > [email protected] <mailto:[email protected]> > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > > _______________________________________________ Qgis-user mailing list > [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user - -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D): +49 - (0)3 21 21 25 22 44 email: [email protected] Skype: RMkrug -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk9+wSMACgkQoYgNqgF2egq9YACgjL6qD4PkTzR/2cd7tzEyJHxw kaYAoIedcXvZ2V1Wo9doUcV48qHQ4oMU =cSSv -----END PGP SIGNATURE----- _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
