[gdal-dev] VRT derived band pixel functions written in Python

[jramm]

Trying to run this using a function relying on scipy.ndimage...

When running gdal_translate on the VRT, I get ImportError: No module named
scipy.ndimage
This comes after successfully import numpy. scipy.ndimage will happily
import within the python interpreter.
Any tips on how to track this down/debug? 

The entire VRT file is as follows:

<VRTDataset RasterXSize="111090" RasterYSize="259376">
  <SRS>PROJCS["OSGB 1936 / British National Grid",GEOGCS["OSGB
1936",DATUM["OSGB_1936",SPHEROID["Airy
1830",6377563.396,299.3249646,AUTHORITY["EPSG","7001"]],TOWGS84[446.448,-125.157,542.06,0.15,0.247,0.842,-20.489],AUTHORITY["EPSG","6277"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4277"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",49],PARAMETER["central_meridian",-2],PARAMETER["scale_factor",0.9996012717],PARAMETER["false_easting",400000],PARAMETER["false_northing",-100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","27700"]]</SRS>
  <GeoTransform>100180.0,5.0,0.0,1215730.0,0.0,-5.0</GeoTransform>
  <VRTRasterBand dataType="Float32" band="1"
subClass="VRTDerivedRasterBand">
    <SimpleSource>
      <SourceFilename
relativeToVrt="0">F:\tif_data\large_sparse.tif</SourceFilename>
      <SourceProperties BlockXSize="256" BlockYSize="256"
RasterXSize="111090" RasterYSize="259376"/>
	  <OpenOptions>
		<OOI key="NUM_THREADS">4</OOI>
		<OOI key="SPARSE_OK">TRUE</OOI>
	  </OpenOptions>
    </SimpleSource>
    <PixelFunctionType>extract_blobs</PixelFunctionType>
    <PixelFunctionLanguage>Python</PixelFunctionLanguage>
    <PixelFunctionCode>
	</PixelFunctionCode>
    <BufferRadius>5</BufferRadius>
    <PixelFunctionArguments nodata="0" count_threshold="5"/>
  </VRTRasterBand>
</VRTDataset>




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