[mapguide-users] render service
amorsell at spatialgis.com
Wed Mar 7 11:22:21 EST 2007
You can greatly improve the speed of a site by having MapGuide server
generate JPG maps rather than PNG. Unfortunately, this must be done on a
server global basis and JPG does not look nearly as nice as PNG. This has a
particularly favorable affect when using imagery layers in your map. In my
non-scientific tests, I saw individual map requests go from 1 MB PNG's to 75
There are cases where you simply cannot make this setting (since it's
global) particularly if you are using base layer tiles in your maps since
the JPG images are not transparent and will cover your PNG tiles. There is
an RFC in the works that will allow the configuration of base layer tiles to
be output as JPG images. The map overlays would remain transparent PNG's
but this should yield good performances since the PNG's are only rendered
with your vector information.
To try this, edit the RequestMapImage() function of the ajaxmappane.templ
file and change the FORMAT parameter to JPG instead of PNG
Andy Morsell, P.E.
Spatial Integrators, Inc.
From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of alucas
Sent: Wednesday, March 07, 2007 3:39 AM
To: mapguide-users at lists.osgeo.org
Subject: [mapguide-users] render service
I'm testing mapguide server performance with sql server 2005 through FDO.
One of the tasks that get more time to do is to render the png image. So, I
think this task would be better enabling apache compression for png images.
What do you think about?
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