[gdal-dev] Handling nodata values

[NopMap]

Hi!

I am trying to create contour lines (and later hillshading) from CGIAR data.
They use –32768 as a nodata value for sea areas which results in tremendous
cliffs if the data is processed by gdal_contour as it is.

I am looking for a way to replace this nodata value in the geotiffs by a
simple 0 value for sea level. It would be great to save the result as a
geotiff that can be used as input for contours, hillshading and maybe other
calculations. Unfortunately I could not figure out which tool to use for
this and how to do it.

Can you help?

thanks
            Nop

-- 
View this message in context: http://osgeo-org.1803224.n2.nabble.com/Handling-nodata-values-tp5222453p5222453.html
Sent from the GDAL - Dev mailing list archive at Nabble.com.