[gdal-dev] RE clip intersected

[Frank Warmerdam]

Steve.Toutant at inspq.qc.ca wrote:
> 
> I finally got gdal_polygonize.py and tried it and generate a shapefile. 
> I might not use it as a solution for what I described below but I would 
> like to use it for other purpose.
> My understanding is this function merge contiguous cells with the same 
> pixel value.

Steve,

That is correct.

> Can I use this function and specify a range of value?
> Example: merge contiguous cells having a value > 16 and < 19

No, it does not support any mechanism like that.  It is assumed the
user would do preprocessing to turn ranges into a mask.

Best regards,
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