I'm looking for advice on sharing raster data for download. We distribute
several raster datasets such as DEMs and orthophotography. Sometimes these
are divided into rectangular tiles, sometimes by geography/boundaries. Most
of our audience has some level of GIS or CAD experience. We also have
Well, you've covered most of the tradeoffs - proprietary/open, general
availability, etc. At the end of the day, it's hard to beat compressed
TIFFs. (lzw-compressed TIFFs are nice too - maybe a bit less supported than
jpeg-compressed, but no quality loss)
-mpg
From:
John,
I agree with Michael. JPEG2000 as a distribution format is
going to be problematic for many users. TIFF+JPEG is
pretty universal. I would add that YCbCr mode jpeg imagery
in TIFF can be quite a bit better quality for size than RGB
imagery. In some cases special writing options are
