[mapserver-users] subsetted output, but I don't want that

[Even Rouault]

Le mercredi 09 novembre 2011 20:46:54, Kevin Ward a écrit :
> No, it's just a plain PNG. I was operating under the assumption that
> the EXTENT and UNITS parameters in the mapfile would define the
> coordinates of the source image but perhaps that is only constraining
> the output?
> 
> If that is the case, how can I go about providing georeference for an
> image such as that?

PNG has no native support for georeferencing. If it is important for you, then 
consider using GeoTIFF as output format with GDAL/GTiff : see 
http://mapserver.org/mapfile/outputformat.html

> 
> Kevin
> 
> On Wed, Nov 9, 2011 at 11:35 AM, Fawcett, David (MPCA)
> 
> <David.Fawcett at state.mn.us> wrote:
> > Is the raster georeferenced?  It kind of sounds like it is using pixel
> > coordinates instead of coordinates from a spatial reference system.
> > 
> > What do you get if you run gdalinfo on the image file?
> > 
> > David.
> > 
> > -----Original Message-----
> > From: mapserver-users-bounces at lists.osgeo.org
> > [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of kablukiw
> > Sent: Wednesday, November 09, 2011 1:33 PM
> > To: mapserver-users at lists.osgeo.org
> > Subject: [mapserver-users] subsetted output, but I don't want that
> > 
> > I am new to mapserver and am experiencing difficulty with the output
> > being generated by mapserv.exe (using OSGeo4W). The output I am getting
> > is showing a subset of the original image even though I am not
> > specifying any extents that would indicate I want anything other than
> > the full image.
> > 
> > The source file is a global image 1440x720 and the output I get is also
> > 1440x720 but is showing only the bottom left 180x90 pixels of the source
> > image resized to 720x360 and placed in the upper right of the output
> > image.
> > 
> > http://osgeo-org.1803224.n2.nabble.com/file/n6979235/test.png example
> > output
> > 
> > It seems as if the EXTENT is affecting the extent of the output but I'm
> > not sure how. I am currently testing this from the cmd line with the
> > following (I have seen the same issue when testing this mapfile with
> > OpenLayers):
> > 
> > mapserv.exe -nh
> > "QUERY_STRING=map=c:/OSGeo4W/apache/htdocs/kevin/lst.map&mode=map" >
> > test.png
> > 
> > My map file:
> > 
> > MAP
> >    NAME "LST"
> >    SIZE 1440 720
> >    EXTENT -180 -90 180 90
> >    UNITS DD
> >    SHAPEPATH "c:/OSGeo4W/apache/htdocs/kevin/"
> >    IMAGECOLOR 255 255 255
> >    IMAGETYPE PNG
> >    STATUS ON
> >    DEBUG ON
> > 
> >    LAYER
> >        NAME "LST"
> >        TYPE RASTER
> >        STATUS DEFAULT
> >        DATA "lst_1440.png"
> >        OFFSITE 0 0 0
> >    END # LAYER
> > END # MAP
> > 
> > Any suggestions would be greatly appreciated. Thanks,
> > 
> > Kevin
> > 
> > --
> > View this message in context:
> > http://osgeo-org.1803224.n2.nabble.com/subsetted-output-but-I-don-t-want
> > -that-tp6979235p6979235.html Sent from the Mapserver - User mailing list
> > archive at Nabble.com. _______________________________________________
> > mapserver-users mailing list
> > mapserver-users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
> 
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