[Mapserver-users] Help Request / datum shifts

[Kieran J. Ames]

Ed, Chip,
So what does this mean for your basic Mapserver user, (eg: anyone like me who doesn't know Jack about compiling Proj or Mapserver)? What steps would one take to make sure we could line up geographic data with projected data? -- when there are
datum issues.
If someone could tell me how to do it, I'd be happy to put together the necessary sample data files to include in a tutorial in how to combine these data into meaningful, easy to understand mapserver maps.
Kieran

Ed McNierney wrote:

> Chip -
>
> Thanks; that's why I was confused.  You don't need to recompile the PROJ library code, but you do need to build those files from the distribution.  Once you've built them, however, I think just copying them into the right directory will do it.
>
>         - Ed
>
> -----Original Message-----
> From: Hankley, Chip [mailto:Chip.Hankley at GASAI.Com]
> Sent: Thursday, March 06, 2003 10:47 AM
> To: Ed McNierney; Kieran J. Ames
> Cc: MapServer List (E-mail)
> Subject: RE: [Mapserver-users] Help Request / datum shifts
>
> > Actually, I'm now not sure about whether you'll need to
> > recompile or not.
>
> I think you do have to compile. ED, the files that you provided me when I
> was having trouble with this were some type of binary files. For instance,
> what is available from the PROJ4 site are the text based datum shift files:
>
> ALASKA
> CONUS
> ...etc.
>
> After compilation, there will be binary files of the same name, with the LLA
> extension:
>
> ALASKA.LLA
> CONUS.LLA
> ...etc.
>
> I think what I found was that simply having the text files in there was not
> enough... you had to have the LLAs (which you can only get by compiling).
>
> FWIW, these files have to be in two places if you're using BOTH cgi and
> php-mapscript. CGI looks for them in C:\proj\nad, and PHP-MapScript looks
> for them in c:\proj. I'm sure you could re-configure this at compile time,
> but, I typically use the pre-compiled binaries.
>
> Kieran, if you want, I can zip up my PROJ directory and e-mail it to you. In
> my opinion, we should put up a compiled version of the PROJ directory on the
> web site for windows users.
>
> Chip
>
> _______________________________________________
> Mapserver-users mailing list
> Mapserver-users at lists.gis.umn.edu
> http://lists.gis.umn.edu/mailman/listinfo/mapserver-users