DEM Raster Feature class to JPEG

Hello @coreyross 

The second band in your raster is odd. Band 0 with the actual DEM values is real32 while band 1 is an alpha8 band with nodata as 255.

If band 1 doesn’t contain valid data, you can try separating the two bands with a RasterBandSeparator, select band 0, then use a RasterInterpretationCoercer to coerce band 0 to Gray8 (or another JPEG supported band interpretation) before the JPEG writer.

Thanks for this help. This has got the JPEG writing and that’s a huge help. I did a quick test and I am not sure the elevation values are being written but I need to do a bit more digging.

Edit: It just occurred to me it might not be possible to store elevation information in a jpg of this type. I need to check with the end user how they are using this raster in their process. It may only be a visual aid.

Thanks again,

Corey

debbiatsafe wrote:

Hello @coreyross 

The second band in your raster is odd. Band 0 with the actual DEM values is real32 while band 1 is an alpha8 band with nodata as 255.

If band 1 doesn’t contain valid data, you can try separating the two bands with a RasterBandSeparator, select band 0, then use a RasterInterpretationCoercer to coerce band 0 to Gray8 (or another JPEG supported band interpretation) before the JPEG writer.