[Xastir-dev] radar image suggestion

[Charles R. Twardy]

Generally, trying to gzip .jpg files will make them larger.
The same should happen with .gif and .png.

These are already compressed formats, and the compression is tailored for
(certain kinds of) images.  Jpeg is tailored for photos, and is usually
lossy, but Gif will outperform it on line art and low-color images. Png is
also decent for photos, but is usually lossless. I think it is comparable
to Gif on low-color images.

Gif is tailored for line art and relatively low-color images.

Gzip and cousins are good, but generic. In theory they should almost
always do worse than the compressed image formats.

Tif is another story entirely. Always zip the tif.


GCN>Can we engender an automagic gunzip for the radar images?  I can
GCN>experiment with gif/tif/png/jpg and determine the best compression rate,


-Charles