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

[Adrian Popa]

Hello,

Thanks for your answers.

I had already included the google EPSG in the proj main file:
[root at terra map]# cat /usr/share/proj/epsg | grep 900913
<900913> +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

I have added "wms_srs" "EPSG:900913 EPSG:4326" to my map file, but the 
GetMap request fails for both SRS 900913 and SRS 4326 with the same 
error message.

My linux version is Fedora Core 5. I'm not sure if the location of the  
epsg is correct, but it works ok with openlayers (running on the same 
server).

Regards,
Adrian

Milo van der Linden wrote:
> 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
>>
>>     
>
>
>   

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