[mapserver-users] msProcessProjection(): Projection library error. no system list, errno: 13

[Milo van der Linden]

Hello Adrian,

Change the METADATA section of your mapfile from:

"wms_srs" "EPSG:900913"

to

"wms_srs" "EPSG:900913 EPSG:4326 EPSG:<whatever projections you want to
expose>"

the wms_srs parameter for the MAP is a collection of space separated
EPSG codes that tells the wms-server what projections it supports.
Please use this space seperated list ONLY at the MAP section, when in
Layers, wms_srs needs to be a single EPSG-code that is native to the
particular layer


Good luck!

Milo van der Linden


Adrian Popa schreef:
> Hello all!
>
> I'm trying to convert my regular MAP file to be WMS compliant and to
> be able to get the contents through WMS requests. I am following the
> tutorial here: http://mapserver.org/ogc/wms_server.html.
>
> The GetCapabilities request works:
> http://terra/cgi-bin/mapserv?map=/var/www/html/map/rtc_base.map&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetCapabilities
>
>
> The GetMap request fails:
> http://terra/cgi-bin/mapserv?map=/var/www/html/map/rtc_base.map&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&LAYERS=GranitaJudete&STYLES=&SRS=EPSG:4326
>
>
> The output returned is:
> <?xml version='1.0' encoding="ISO-8859-1" standalone="no" ?>
> <!DOCTYPE ServiceExceptionReport SYSTEM
> "http://schemas.opengis.net/wms/1.1.1/exception_1_1_1.dtd">
> <ServiceExceptionReport version="1.1.1">
> <ServiceException>
> msProcessProjection(): Projection library error. no system list,
> errno: 13
>
> </ServiceException>
> </ServiceExceptionReport>
>
>
> The Map file has the following definitions:
> MAP
> ...
> WEB
>   ...
>   METADATA
>      ...
>      "wms_title" "Basic Map"
>    "wms_attribution_title" "Basic Map"
>    "wms_srs" "EPSG:900913"
>   END
>  END
>
> PROJECTION
>    #spherical mercator/google
>     "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0
> +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs"
> END
>
> LAYER
>  NAME "GranitaJudete"
>  ...
>  METADATA
>        "wms_title" "GranitaJudete"
>        "wms_srs" "EPSG:4326"
>    END
>    PROJECTION
>        #WGS84
>        "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"
>    END
>    ...
> END
>
> END
>
> The thing is (if I remember correctly) my mapserver doesn't really
> recognize projections by their EPSG code, but it works if I supply the
> other definition. I'm not sure how to correct that and I don't know if
> this is the cause.
>
> I've looked into PROJ4 source code and I found refrences to errorcode
> -13 in this function: PJ *pj_latlong_from_proj( PJ *pj_in ) from
> src/pj_utils.c. It returns errorcode -13 if can't find "datum",
> "ellps" or "a".
>
> I'm not sure where to go from here, as google doesn't find this
> particular error code...
>
> Thanks
>