ahmet temiz wrote:
thank you

I am sorry but I am not clear.

how shall we integrate elevation data if we burn vectors to all nodata ?

Ahmet,

You need to create a blank file for the study area - with all pixels set to
a nodata value.  Then you burn the contours in with gdal_rasterize.  The
pixels under the contours will be set to the elevation value of the contours.

Then interpolate with gdal_fillnodata.py.

Best regards,
--
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I set the clouds in motion - turn up   | Frank Warmerdam, [email protected]
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and watch the world go round - Rush    | Geospatial Programmer for Rent

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