[mapserver-users] Problems with Google 900913 Projection and WMS Layers
Bill Thoen
bthoen at gisnet.com
Wed Mar 18 07:35:40 PDT 2009
No, that didn't makemuch difference. That produces a pile of these errors:
[Wed Mar 18 07:52:12 2009].814433 msProcessProjection(): Projection
library error. no options found in 'init' file
[Wed Mar 18 07:52:12 2009].814829 msSaveImageGDCtx(): General error
message. Unknown output image type driver: AGG/PNG.
[Wed Mar 18 07:52:12 2009].839008 msProcessProjection(): Projection
library error. no options found in 'init' file
[Wed Mar 18 07:52:12 2009].839383 msSaveImageGDCtx(): General error
message. Unknown output image type driver: AGG/PNG.
I imagine that the "unknown output" is a text error message, but I don't
know how to capture it to read it. There was nothing in the normal
/var/loghttpd/error_log.
This problem is driving me crazy. I've spent hours on it, and I still
can't get it to work. I've googled, RTFM'ed, tried all kinds of "Hail
Mary" code changes, and it still won't convert my WMS layers to fit on
the Google projection. I don't know what this 'init' file is that
MapServer is complaining about, but if it's /usr/share/proj/epsg, then I
have checked that one and the projection for google maps is there, and
AFAIK, all the parameters are correct.
So I've written two mini versions of the code and attached the source to
this message. Hopefully a fresh pair of eyes can spot the thing that I
can't. What this code in g.html / g.map is supposed to do is just
display a WMS of orange county boundaries as a layer on top of a google
layer, but all I get is pink as far as the eye can see (but the google
layer appears below the pink. The other one, g2.html / g2.map, just
displays the counties in a Lat/long projection, and that one works (I
included this one as a reality check to make sure there wasn't something
wrong with my county file. Except for the bits that must be changed to
accommodate the different projections the code is as identical as I
could make it. You can run them on my server too. They are at
http://206.168.217.244/gallery/g.html and
http://206.168.217.244/gallery/g2.html.
If anyone could give some help with this, I'd really appreciate it. It's
got to be something simple; I just can't see it.
TIA,
- Bill Thoen
Pietro Giannini wrote:
> 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
>>
>>
>> _______________________________________________
>> mapserver-users mailing list
>> mapserver-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>
>
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