[gdal-dev] nodata value assigned via script

[Matt Wilkie]

Wow, a python question I actually know the answer too!  :)

 From python you can use "band.SetNoDataValue( float(null_value) )". For 
this in context see this tiny utility:
http://maphew.googlecode.com/svn/trunk/gis/gdal_extras/bin/gdalsetnull.py

And the doc on this function:
http://www.gdal.org/classGDALRasterBand.html#c6f081d253dee55c372e54cfdd8f05a6

cheers,

matt wilkie
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Roger André wrote:
> Hi,
> 
> I'm getting raster data written by different people who can't seem to 
> use the same nodata values.  I'm reading the data files via the Python 
> API to GDAL, and doing various calculations on the data values, then 
> writing new rasters with the results of my calculations.  Is there a 
> "nodata" value that I can assign to a pixel that the gdal utilities will 
> recognize as such later on?  All my other values are 32-bit floating 
> point values, so I'm not sure what value to assign.
> 
> Thanks.
> 
> Roger
> --
> 
> 
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