[MetaCRS] RE: EPSG Code to Coordinate System

[Steve Stanton]

Hi Hugues,
I was looking through the code you mention, and I started to wonder why it's so complicated. Would it not be possible to loop through the the coordinate systems using CS_csrd and look at the value of the epsgNbr field in the cs_Csdef_ struct?
Or is the epsgNbr field no longer utilized? (I see it's defined in only about half of the systems).
Steve

--- On Wed, 26/1/11, Hugues Wisniewski <hugues.wisniewski at autodesk.com> wrote:

From: Hugues Wisniewski <hugues.wisniewski at autodesk.com>
Subject: [MetaCRS] RE: EPSG Code to Coordinate System
To: "Chris Gibson" <Chris.Gibson at divestco.com>, "metacrs at lists.osgeo.org" <metacrs at lists.osgeo.org>
Date: Wednesday, 26 January, 2011, 0:22

Hello Chris,  For this kind of activity an example is always welcome ;-) and here’s how it’s done in the MapGuide API for future reference The method is CCoordinateSystemFormatConverter::CodeToCode in the file:  http://svn.osgeo.org/mapguide/trunk/MgDev/Common/CoordinateSystem/CoordSysFormatConverter.cpp  The Cs-Map API being used is CSepsg2adskCS. And if EPSG is the target CSadsk2epsgCS is the one.CS_epsg2msi sounds like a dead prototype that would have to be removed from Cs-MapFeel free to create a ticket for that and it will be taken care of  Thanks  Hugues  From: metacrs-bounces at lists.osgeo.org [mailto:metacrs-bounces at lists.osgeo.org] On Behalf Of Chris Gibson
Sent: Tuesday, January 25, 2011 3:33 PM
To: metacrs at lists.osgeo.org
Subject: [MetaCRS] EPSG Code to Coordinate System  I have a need to convert an EPSG code to the Coordinate System descriptor. I thought the function CS_epsg2msi would do what I want, this is in the header file, but no function exists in the source code, so I get an unresolved external.  Am I missing something?  What should I be using?  ThanksChris Gibson  
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