gdal_rasterize using a "string" as src_datasource

Question

I would like to use a string as src_datasource for gdal_rasterize program.

Is it possible to use something like a WKT definition to translate a single point to a raster?

Something like:

gdal_rasterize -b 1 -b 2 -b 3 -burn 255 -burn 0 -burn 0 -l mask "POINT(6 10)" work.tif

Answer 1

Yes, you need to write a CSV file, e.g. point.csv:

id,WKTgeom
1,POINT(6 10)

and then an OGR VRT file, e.g. point.vrt:

<OGRVRTDataSource>
 <OGRVRTLayer name="point">
 <SrcDataSource relativeToVRT="0">point.csv</SrcDataSource>
 <SrcLayer>point</SrcLayer>
 <GeometryType>wkbPoint</GeometryType>
 <LayerSRS>WGS84</LayerSRS>
 <GeometryField encoding="WKT" field="WKTgeom"/>
 </OGRVRTLayer>
</OGRVRTDataSource>

Finally, you can execute something like:

gdal_rasterize -b 1 -b 2 -b 3 -burn 255 -burn 0 -burn 0 -l point point.vrt work.tif

Note: work.tif must exist before you run gdal_rasterize and have three bands.

• aborruso: Ciao Antonio, I know I can use a CSV via a .vrt file, but I have another goal. I'm looking for a way to convert a single a pair of coordinates to a raster file, without the need to create other external files. Probably it's not possible. I think it's possible in GRASS. Grazie mille
• Antonio Falciano: I think that it's not possible, because you should specify other properties of the raster file (SRS, GeoTransform, etc.). GDAL Virtual Format is the right way in this case.