Carlos,
This is a specialized case.
You can do this programatically by using 'derived bands' in the VRT
format[1].
It could be a lot easier to do this using a desktop GIS application like
QuantamGIS [2]. QuantamGIS has a raster calculator utility that can do a
lot of arithmetic operations like th
Hi,
I need to perform classification and combination of three ascii grids.
This means for example:
1. Separate the data of each cell in the grid among three classes
Layer1 Classes: A1,B1,C1
Layer2 Classes: A2,B2,C2
Layer3 Classes: A3,B3,C3
2. Then Combine the three classified grid
Thanks Even, using -nlt GEOMETRY works great for my application.
> This can be solved by 2 similar solutions. Add -nlt MULTIPOLYGON to
> your ogr2ogr command line to force conversion of simple polygons to
> multipolygons.
> Or add -nlt GEOMETRY so that the target layer is just advertized as
> bein
Gordon,
> Hi,
>
> I have a question regarding GML3.2 output from ogr2ogr in GDAL 1.9 (from
> a daily build from a few days ago). I have a sample shapefile (found at
> http://www.vdstech.com/mapdata/canada.zip) that I've tried to convert to
> GML 3.2 using the command "ogr2ogr -f GML canada.xml c
Hi,
I have a question regarding GML3.2 output from ogr2ogr in GDAL 1.9 (from
a daily build from a few days ago). I have a sample shapefile (found at
http://www.vdstech.com/mapdata/canada.zip) that I've tried to convert to
GML 3.2 using the command "ogr2ogr -f GML canada.xml canada.shp -dsco
FORMA
