[gdal-dev] VRT KernelFilteredSource and NoDataValue

Belaid MOA belaid_moa at hotmail.com
Sat Aug 29 22:32:17 EDT 2009

Hi everyone,
    I am using VRT KernelFilteredSource to implement an average filter as done in the VRT tutorial. However, I am still unclear on how it handles the NoDataValue pixels. Are they too averaged or does it leave them as they are? If they are masked,  does do an adjustment for the kernel coefficients to compensate for their absence? Another related question, is how does it handle the pixels on the borders and the kernel coefficients for those pixels?

   Thank you very very much in advance for any help on these issues.

   With best regards.

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