RT90 in input data and WGS84 in output

[Tommy Persson]

I have just started to use mapserver and have problem getting it to
work setting up a WMS server.  My input data is GeoTIFF tiles in RT90
coordinate system (epsg:2400) and I would like to be able ask for the
map using WGS84 coordinates.  The result is that when I ask for an
area in WGS84 the image is translated approximately 100 meter
east/west and 10 meters north/south.  To test this I created the map
file below and the used:

      <li><a href="http://porter/cgi-bin/mapserv?map=test.map&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&LAYERS=circles&STYLES=&SRS=EPSG:4326&BBOX=13.468145,55.721954,13.474291,55.725665&WIDTH=400&HEIGHT=400&FORMAT=image/jpeg">TEST WGS84</a></li>
      <li><a href="http://porter/cgi-bin/mapserv?map=test.map&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&LAYERS=circles&STYLES=&SRS=EPSG:2400&BBOX=1353149.989085,6179449.949519,1353549.986932,6179849.988875&WIDTH=400&HEIGHT=400&FORMAT=image/jpeg">TEST RT90</a></li>

to access the data and the translation is obvious (and I have checked
the translation between WGS84 and RT90 in the URL:s above and it seems
to be correct).  Any ides of how to fix this?  Any obvious errors in
the file below?


Mapfile test.map:

MAP

NAME TestWMS
STATUS ON
SIZE 400 400
SYMBOLSET examples.sym
EXTENT 1352800.0 6179200.0 1353900.0 6180100.0
UNITS METERS
IMAGECOLOR 255 255 255

WEB
  IMAGEPATH "/var/tmp/" 
  IMAGEURL "/var/tmp/"
  METADATA
    "wms_title"            "GMap WMS Demo Server"  ## REQUIRED
    "wms_onlineresource"   "http://porter.ida.liu.se/cgi-bin/mapserv?map=test.map&"  ## Recommended
    "wms_srs"               "EPSG:2400 EPSG:4326"  ## Recommended
  END
END

PROJECTION
  "init=epsg:2400"  # rt90
END

LAYER
  NAME "circles"
  METADATA
    "wms_title"    "cirles" ## REQUIRED
  END
  PROJECTION
    "init=epsg:2400"  # rt90
  END
  STATUS DEFAULT
    TYPE POINT
    FEATURE
      POINTS 1353350 6179650 END
      POINTS 1353330 6179650 END
      POINTS 1353300 6179600 END
      POINTS 1353400 6179700 END
      POINTS 1353310 6179610 END  # 10-changed
      POINTS 1353390 6179690 END  # 10-changed
      POINTS 1353310 6179690 END  # 10-changed
      POINTS 1353390 6179610 END  # 10-changed
  END
  CLASS
      SYMBOL 'circle'
      COLOR 255 0 0
      BACKGROUNDCOLOR 255 255 255
      SIZE 10
  END
  DUMP TRUE           ## REQUIRED
END
 
END # Map File



-- 
/Tommy Persson