thank you all On Thursday, July 9, 2015, Moritz Lennert <[email protected]> wrote:
> On 2015-07-09 00:51, Glynn Clements wrote: > >> Moritz Lennert wrote: >> >> > how can I convert aspect map's values to azimuth values? >>> > or is there any way to create aspect map with azimuth values? >>> >>> I think this should work (but you should double check): >>> >>> if aspect <= 90, then azimuth = 90 - aspect >>> else: azimuth = 450 - aspect >>> >>> i.e. >>> >>> r.mapcalc "azimuth_aspect = if(aspect <= 90, (90 - aspect), (450 - >>> aspect))" >>> >> >> Or: >> >> r.mapcalc "azimuth_aspect = (450 - aspect) % 360" >> > > > Even better, thanks ! > > Added as a FAQ [1] and to the r.slope.aspect manual (r65553). > > Moritz > > [1] http://grasswiki.osgeo.org/wiki/Transform_CCW_aspect_to_azimuth > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > -- Ahmet Temiz Jeoloji Müh. Afet ve Acil Durum Yönetimi Başkanlığı Bilgi İşlem Dairesi Başkanlığı-CBS Grubu ________________________ Ahmet Temiz Geological Eng. Information Systems - GIS Group Disaster and Emergency Management of Presidency
_______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
