Re: [Geoserver-users] response in bytes?

[Andrea A. <aa...@op...>]

Imran Rajjad ha scritto:
> is it possible to get bytes instead of an image against a WMS request,
> I`m trying to cut the image rendering time at server end and render
> the bytes into image at client end, I was wondering it that can be
> possible?

The TIFF output format is as close to a raw image as one can imagine,
there is no compression overhead.

This one:
http://demo.opengeo.org/geoserver/wms?service=WMS&version=1.1.0&request=GetMap&layers=topp:states&styles=&bbox=-124.73142200000001,24.955967,-66.969849,49.371735&width=780&height=330&srs=EPSG:4326&format=image/tiff

returns a 3 band RGB tiff image which is 755KB, the pure data
array of it is in fact 780x330x3/1024=754KB.
Allow for some header describing image structure, color interpretation
and you get to 755

Of course to have any advantage using it you must have a very
fast network or sit on the same box since the image size is
around 15 times bigger than the equivalent PNG 24 bit

Cheers
Andrea

-- 
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.