[Mapserver-users] Proj problems

[Vincent Schut]

Gerry,

I don't presume I will solve your problem, but let me add me 2 cents:

- I saw a line 'proj=longlat'. This is definitely not going to work, as it 
should be 'proj=latlong'.
- I think you can't use a full proj definition and a epsg:xxxx line together 
in the same projection block (in the PWV layer). An epsg line is a shortcut 
to a full projection definition. Either use that, or define the projection 
yourself in the projection block, but don't do both, cause you'll end up 
having 2 projections defined...
- mind that layers that do not have a projection defined in the map file and 
do not have an internal projection definition (e.g geotiff files do, but 
shapefiles don't have an internal projection def) are assumed to be in the 
defined output projection of the mapfile. If they are not in the same 
projection, there is a pretty big chance that they will fall outside of your 
defined map extent.
- your mapfile is quite complex, having some different layers with different
projections. I'd say, try to start with a stripped down mapfile with only one 
layer which is in the same projection as the output projection, get that 
working, then start adding new layers one by one. This greatly increases your 
chances of tackling the problem. Now it can be anywhere in your file.
- it might be on purpose but the mapfile you attached doesn't have any main 
map projection defined: they are all commented out. Don't forget to uncomment 
one, as you will need at least one... And adjust the units according to the 
uncommented projection, e.g. if you uncomment a utm proj, change units to 
meters. And of course change your main extent accordingly.
- remove the minscale and maxscale items from the web block while debugging to 
prevent them to fool you.
- STATUS should be on|off|default, not false, according to the documents. I 
wonder why you don't get a parse error about that. Or it might work but be 
undocumented ;-) BTW while debugging I always prefer status default, because 
that makes sure your layers will be displayed, while with status on you will 
have to activate them explicitly in your cgi request. For more info on this 
search the mailing list archives.
- for raster files that are not in some remote sensing format and thus do not 
contain any coordinate information (like the radar layer: it's a gif file) 
you probably need to use a world file to define the corner coordinates and 
raster cell size.

Hope these help...
Good luck,

Vincent.

On Thursday 31 July 2003 23:28, Gerry Creager wrote:
> OK, I'm pretty much at my wits' end.  I've tried looking at this on a
> time-available basis, and I'm just not getting it.
>
> A mapserv -v yields the following:
> [root at mesonet cgi-bin]# ./mapserv -v
> MapServer version 3.7 (development) OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
> OUTPUT=PDF OUTPUT=SWF SUPPORTS=PROJ SUPPORTS=TTF SUPPORTS=WMS_SERVER
> SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER SUPPORTS=GD2_RGB INPUT=OGR
> INPUT=GDAL INPUT=SHAPEFILE
>
> PROJ support is there, so it should allow me to specify a projection
> section, either with the EPSG shortcut or the long way, with everything
> specified.  I've tried that and what I end up with is essentially a
> blank screen...
>
> If someone's got suggestions, great.  The mapfile is attached.  I'll
> keep looking at it, but it's looking like my hair's on fire and I can't
> get it put out...
>
> Thanks in advance,
> Gerry

-- 
______________________________________
Vincent Schut
Sarvision B.V.
Wageningen, The Netherlands
www.sarvision.com