[mapserver-users] Problems with Google 900913 Projection and WMS Layers

[Pietro Giannini]

Put the epsg definition directly on .map file:

MAP
...
    PROJECTION
        "+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
...
END

bye
...................pg

Bill Thoen ha scritto:
> I'm trying to get my WMS server to produce WMS layers for an 
> OpenLayers application I'm building that uses some Google map layers. 
> But I'm getting no results. DEBUG set to ON in my mapfile produces the 
> following errors (this is the last three lines of the log file:
> [Tue Mar 17 15:16:28 2009].567265 msProcessProjection(): Projection 
> library error. no options found in 'init' file
> [Tue Mar 17 15:16:28 2009].578247 msProcessProjection(): Projection 
> library error. no options found in 'init' file
> [Tue Mar 17 15:16:28 2009].603064 msProcessProjection(): Projection 
> library error. no options found in 'init' file
>
> I did put the definition for the Google CRS in /usr/share/proj/defs as:
>
> # Google's spherical mercator projection
> <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 <>
>
> So could someone here clue me in to what's wrong? What's the 'init' 
> file and what do I need to put in it? I'm on a Linux system with 
> mapserver set up like so:
> MapServer version 5.0.3 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP 
> OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE 
> SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER 
> SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=GEOS INPUT=EPPL7 
> INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
>
> Below is my mapfile if you want to see it.
> TIA,
> - Bill Thoen
>
> ---
> MAP
>   CONFIG MS_ERRORFILE "/var/www/html/tmp/ms_errors.txt"
>   DEBUG ON
> #  EXTENT -102.39 36.81 -94.44 40.13
>   EXTENT -20037508.34  -20037508.34  20037508.34  20037508.34
>   IMAGECOLOR 255 255 255
>   SHAPEPATH /var/www/vfm/
>   FONTSET /var/www/maps/fonts/fonts.txt
>   SYMBOLSET /var/www/maps/symbols/symbols.txt
>
>   OUTPUTFORMAT
>      NAME 'AGG'
>      DRIVER "AGG/PNG"
>      MIMETYPE "image/png"
>      IMAGEMODE RGB
>      EXTENSION "png"
>   END
>
>   WEB
>      IMAGEPATH "/var/www/html/tmp/"
>      IMAGEURL "/tmp/"
>      METADATA
>         "wms_title" "VFM Data Layers"
>         "wms_onlineresource" 
> "http://xxx.xxx.xxx.xxx/cgi-bin/mapserv?map=/var/www/html/vfm/ms.map&"
>         "wms_srs" "EPSG:4326 EPSG:900913"
>      END
>   END
>
>   PROJECTION
>      "init=epsg:900913"
>   END
>   UNITS METERS
>
>   LAYER
>      NAME "states"
>      METADATA
>         "wms_title" "US State boundaries"
>         "wms_srs" "EPSG:32614 EPSG:4326 EPSG:900913"
>      END
>      TYPE POLYGON
>      STATUS ON
>      DATA ../maps/data/states
>      CLASS
>         NAME "US States"
>         STYLE
>            OUTLINECOLOR 0 0 0
>            WIDTH 2
>         END
>      END
>      PROJECTION
>         "init=epsg:32614"
>      END
>   END
>
>   LAYER
>      NAME "counties"
>      METADATA
>         "wms_title" "County Boundaries"
>         "wms_srs" "EPSG:4269 EPSG:4326 EPSG:900913"
>      END
>      TYPE POLYGON
>      STATUS ON
>      DATA ../maps/data/County_tiger_2007_region
>      CLASS
>         NAME "County Boundaries"
>         STYLE
>            OUTLINECOLOR 128 128 128
>            COLOR 255 255 192
>            WIDTH 1
>         END
>      END
>      PROJECTION
>         "init=epsg:4269"
>      END
>   END
> END
>
>
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-- 
Pietro Giannini
Bytewise srl - Area GIS
41°50'38.58"N 12°29'13.39"E