Nelson, I assume that you are trying to use MapServer as a WMS or WFS server. If you haven't seen this HowTo, check it out: http://mapserver.gis.umn.edu/docs/howto/wms_server It gives you an example map file and tells you what metadata is required.
Part of serving a WMS/WFS is that people who want to use your data service need to know what projection it is in. To do this, they send a GetCapabilities request and are returned a document that describes your service. Projection information is needed for the GetCapabilities. The first step is to determine/understand what spatial reference system (projection) your data is in. Once you know that, you can add projection blocks to your map file. For your situation, it sounds like the input projection for your data is the same as the output projection of your map. In other words, you are keeping it in the same projection. In this case, you just need to put the same projection blocks at in the MAP object and the LAYER object of your map file. If your data was in UTM Zone15, NAD83, you could use a block like this: PROJECTION "init=epsg:26915" END David. -----Original Message----- From: LITTLE Nelson [mailto:[EMAIL PROTECTED] Sent: Monday, September 17, 2007 10:27 PM To: Fawcett, David; MAPSERVER-USERS@lists.umn.edu Subject: RE: [UMN_MAPSERVER-USERS] Which Projection to use? David, Thanks for your reply. What PROJECTION info do I specify and what values do I give that data? I see in the mapfile reference page the examples either reference a projection from the epsg file (which one would I use?) or supply the values for proj, ellps, datum. I don't want my x-y data to be projected any differently to how it is presented in the map files. Cheers, Nelson -----Original Message----- From: Fawcett, David [mailto:[EMAIL PROTECTED] Sent: Monday, 17 September 2007 11:37 PM To: LITTLE Nelson; MAPSERVER-USERS@lists.umn.edu Subject: RE: [UMN_MAPSERVER-USERS] Which Projection to use? If all of your data is in the same projection, you don't need to define projections in your map file. One exception is that if you are serving the data up as a WMS or WFS, you will need to define MAP and LAYER level projections. You will likely also need to add metadata at the LAYER and MAP? level that includes information about the projection. David. -----Original Message----- From: UMN MapServer Users List [mailto:[EMAIL PROTECTED] On Behalf Of LITTLE Nelson Sent: Monday, September 17, 2007 1:42 AM To: MAPSERVER-USERS@LISTS.UMN.EDU Subject: [UMN_MAPSERVER-USERS] Which Projection to use? Hi all, I have shape files which are in x,y coordinate form (units of meters) and didn't think I needed any projection information because I was dealing with such a small area, thus never defined any PROJECTION info in my map file. Now I am getting the following error: [MapServer Error]: _msProcessAutoProjection(): WMS/WFS AUTO PROJECTION must be in the format 'AUTO:proj_id,units_id,lon0,lat0' (got ''). I gather from the error message that I need to define at least a map level projection entry, but I am not sure what I should use? Any help much appreciated Cheers, Nelson Disclaimer : The contents of this e-mail including any attachments are intended only for the person or entity to which this e-mail is addressed. If you are not, or believe you may not be, the intended recipient, please advise the sender immediately by return e-mail, delete this e-mail and destroy any copies. Tenix does not warrant nor guarantee that this email communication is free from errors, virus, interception or interference. Disclaimer : The contents of this e-mail including any attachments are intended only for the person or entity to which this e-mail is addressed. If you are not, or believe you may not be, the intended recipient, please advise the sender immediately by return e-mail, delete this e-mail and destroy any copies. Tenix does not warrant nor guarantee that this email communication is free from errors, virus, interception or interference.
