[gdal-dev] gdal_rasterize - blending option

2015-01-09 Thread Bresler Johan
Hi, I sometimes need to burn vector data on a raster and use gdal_rasterize for this task.How ever there is times that I would like to "blend" / "multiply" polygons vector data (color) with the existing raster. I had a look in the code and noted there is a GDALRasterMergeAlg option with a "ADD"

Re: [gdal-dev] Affine parameters in the gdal datamodel doc

2015-01-09 Thread Rahkonen Jukka (MML)
Even Rouault wrote: >> Hi, >> >> I am trying to understand the geotransform parameters by reading >> http://www.gdal.org/gdal_datamodel.html but I am confused. In the >> Affine GeoTransform section there are formulas >> >> Xgeo = GT(0) + Xpixel*GT(1) + Yline*GT(2) >> Ygeo = GT(3) + Xpi

Re: [gdal-dev] Affine parameters in the gdal datamodel doc

2015-01-09 Thread Even Rouault
Le vendredi 09 janvier 2015 09:33:04, Jukka Rahkonen a écrit : > Hi, > > I am trying to understand the geotransform parameters by reading > http://www.gdal.org/gdal_datamodel.html but I am confused. In the Affine > GeoTransform section there are formulas > > Xgeo = GT(0) + Xpixel*GT(1) + Ylin

[gdal-dev] Affine parameters in the gdal datamodel doc

2015-01-09 Thread Jukka Rahkonen
Hi, I am trying to understand the geotransform parameters by reading http://www.gdal.org/gdal_datamodel.html but I am confused. In the Affine GeoTransform section there are formulas Xgeo = GT(0) + Xpixel*GT(1) + Yline*GT(2) Ygeo = GT(3) + Xpixel*GT(4) + Yline*GT(5) The latter formula fee