It's a shame MapGuide doesn't use EPSG codes :-)
OpenLayers applications typically would use Proj4js to do client side
transformations which is based on PROJ.4 which can use EPSG codes and/or
custom initialization parameters. I haven't heard of anyone converting
CS-Map to Javascript.
Mike
Scott hameister wrote:
It's a shame OpenLayers doesn't use mentor/CS-Map...I thought I read
somewhere that it was going to? Anyone?
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Jason Birch
Sent: Wednesday, October 07, 2009 11:28 AM
To: MapGuide Users Mail List
Subject: Re: [mapguide-users] Fusion and Open layers Coordinate systems
I know this is neither here nor there, but I believe there are many
valid projections that do not have EPSG codes. Defaulting to LL when
many "non-standard" CS are liner-units-based may not be the best
approach. Would it not be possible to disable coordinate transforms if
there is no code available?
Jason
On 2009-10-07, Mike Adair <[email protected]> wrote:
I'm currently working on a patch to retrieve the projection info from
the map definition for MapGuide. The problem is that MG uses WKT and
OpenLayers/Fusion uses EPSG codes and MG doesn't always have an EPSG/WKT
mapping available. So I will be implementing this so that if MG returns
a valid EPSG code it will use that, otherwise it will take a value from
the ApplicationDefinition file, and if there still isn't an EPSG code
available then the projection will be set to the OpenLayers default of
EPSG:4326.
Mike
Flipper wrote:
Im trying my hand at some Open Layers programming. I'm trying to set the
maps
Coordinate system to match Mapguides, So I decided to peek into
Fusion....
One thing for the life of me I can't find is where fusion sets the
OpenLayer
Maps Coordinate system. I know Open layers uses Proj 4, and Mapguide Can
use
both cs-map and Proj4...I know how to get the coordinate system
Description
out of Mapguide...But how do I push it back into OpenLayers Using my
PROJCS
system...
Or worded Much simpler...How/Where does Fusion do this to openLayers...I
want this to work on anymap...so I don't want to hard code a EPSG code
into
it, and several users will have Non PROJ4 coordinate systems, like Local
County Coordinate systems that CS-MAP allows them to use...
ANYONE?
--
Michael Adair
Senior Software Architect
DM Solutions Group Inc.
Office: (613) 565-5056 x26
[email protected]
http://www.dmsolutions.ca
http://research.dmsolutions.ca
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--
Michael Adair
Senior Software Architect
DM Solutions Group Inc.
Office: (613) 565-5056 x26
[email protected]
http://www.dmsolutions.ca
http://research.dmsolutions.ca
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