Agg and resampling

[Rob McCulley]

Hi All,

 

Agg doesn't seem to be able to use resampling in tiled raster layers.
This is my raster layer:

 

     LAYER # Aerials_2003

          NAME Aerials_2003

          GROUP RemoteSensing

          TILEINDEX "Aerials_2003.shp"

          TILEITEM "location"

          STATUS DEFAULT

          TYPE RASTER

          PROCESSING "RESAMPLE=BILINEAR"

          OPACITY 70

          MAXSCALEDENOM 75000

          DEBUG ON

     END

 

and this is my output format:

 

     OUTPUTFORMAT

            NAME "AGG_JPEG"

            DRIVER "AGG/JPEG"

            MIMETYPE "image/jpeg"

            IMAGEMODE RGB

            EXTENSION "jpg"

            FORMATOPTION QUALITY=80

     END

 

Then the raster layer does not draw.  There are no errors at all, but no
raster layer.  If I comment the PROCESSING line out, then the raster
layer appears.  If I leave the PROCESSING line in, and change the output
format to GD/JPEG, then the raster layer appears.

 

The output of shp2img with debug level set to 2 with the PROCESSING line
and agg output is:

 

msDrawRasterLayerLow(Aerials_2003): entering.

msResampleGDALToMap in effect: cellsize = 1.000000

msDrawGDAL(Aerials_2003): using RAW_WINDOW=6244 2998 914 913

msDrawGDAL(): red,green,blue,alpha bands = 1,0,0,0

msDrawMap(): Layer 0 (Aerials_2003), 0.172s

msDrawMap(): Layer 1 (ParcelLines), 0.016s

msDrawMap(): Layer 2 (CadastralLabelsParcel), 0.015s

msDrawMap(): Layer 6 (Pipes), 0.016s

msDrawMap(): Layer 7 (Abandoned_Pipes), 0.015s

msDrawMap(): Layer 8 (New_Pipes), 0.000s

msDrawMap(): Layer 9 (ForeignPipelines), 0.016s

msDrawMap(): Layer 10 (TapStations), 0.016s

msDrawMap(): Layer 11 (RegStations), 0.015s

msDrawMap(): Layer 12 (Wells), 0.016s

msDrawMap(): Layer 13 (Major-Water), 0.016s

msDrawMap(): Layer 14 (Minor-Water), 0.015s

msDrawMap(): Drawing Label Cache, 0.016s

msDrawMap() total time: 0.344s

 

It appears to be resampling the image, but the raster layer doesn't
appear.

 

Is this a bug, or am I missing a setting somewhere?

 

Thanks,

Rob McCulley

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