[Gdal-dev] assign nodata to existing tif?

[Matt Wilkie]

Hello,

How do I define the nodata value in an existing geotiff?

I've created some mosaicks with gdal_merge, which doesn't assign nodata, 
and now I want to tell those mosaicks which value is nodata (so that 
when I gdal_translate them with jpeg compression the nodata values are 
excluded from the resampling).

thanks!

-- 
matt wilkie
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Geographic Information,
Information Management and Technology,
Yukon Department of Environment
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http://environmentyukon.gov.yk.ca/geomatics/
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