[gdal-dev] GeoTiff null values

[Filippo Corò]

Hi List,

I'm running tests with GDAL 1.7 and python  for achieving a function for  
the sum of GeoTIFF file. I found some difficulty in handling null values.
I wanted to know if you can assign a specific value (like 99) to null when  
I call the Open function.

The code is as follows:

# Open the image 1
primoDs=gdal.Open('eros.tif', GA_ReadOnly)

primoBand=primoDs.GetRasterBand(1)

If I use the following function:

noval=primoBand.GetNoDataValue()
print noval

I get:

0.0 with null value:

Is there any statement at this stage allow me to decide what value to  
assign to null, when I call gdal.open?

Thanks in Advance

Filippo Corò


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