[gdal-dev] Error in Derived Band in Virtual raster

[jratike80]

Hi,

It seems that you have defined a Python function "add2" that does nothing
because it has no code

        <PixelFunctionType>add2</PixelFunctionType>
        <PixelFunctionLanguage>Python</PixelFunctionLanguage>
        <PixelFunctionCode>
        </PixelFunctionCode> 

You have perhaps tried to modify the example from
https://gdal.org/drivers/raster/vrt.html
<PixelFunctionType>add</PixelFunctionType>
        <PixelFunctionLanguage>Python</PixelFunctionLanguage>
        <PixelFunctionCode>
        </PixelFunctionCode>

Have you saved your add2 function into a separate Python script? In that
case follow the hillshading.py example.

-Jukka Rahkonen-


bhandari wrote
> Hell All 
> 
> I have defined a derived Virtual Raster as follows.  
> <VRTDataset rasterXSize="25828" rasterYSize="16749">
>   
> <SRS>
> GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS
> 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433],AUTHORITY["EPSG","4326"]]
> </SRS>
>   
> <GeoTransform>
>   7.8318056012634287e+01,  1.1839023066784193e-04, 
> 0.0000000000000000e+00,  3.0866547275126596e+01,  0.0000000000000000e+00,
> -7.3767782488687317e-05
> </GeoTransform>
>     
> <VRTRasterBand dataType="Float32" band="1"
> subClass="VRTDerivedRasterBand">
>         
> <PixelFunctionType>
> add2
> </PixelFunctionType>
>         
> <PixelFunctionLanguage>
> Python
> </PixelFunctionLanguage>
>         
> <PixelFunctionCode>
>         
> </PixelFunctionCode>
>     
> <SimpleSource>
>   

....




--
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