[Qgis-user] Writing Python loop for Raster calculator
Rainer M Krug
r.m.krug at gmail.com
Fri Apr 6 03:41:32 EDT 2012
-----BEGIN PGP SIGNED MESSAGE-----
On 06/04/12 08:35, Swapnil Chaudhari 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_05 at 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.
One additional option would be R with the packages raster, maptools, et al.
> 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.
> Swapnil o__ _> /__ (_) \(_)....... live healthy
> _______________________________________________ Qgis-user mailing list
> Qgis-user at lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys.
Centre of Excellence for Invasion Biology
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: Rainer at krugs.de
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
-----END PGP SIGNATURE-----
More information about the Qgis-user