[mapserver-users] Re: problem with mercator projection

[fred p]

Hello
Nobody has got an idea whether I am wrong somewhere or there is a problem in
the image or ... ?
I add the result is OK in EPSG:4326 whatever the bbox is and it is OK too in
EPSG:3395 provided the extent longitude is smaller than 360°. However when
it is higher...
Thanks in advance

2011/9/21 fred p <mapoubelle22 at gmail.com>

> Hello !
>
> I am trying to serve an image in Mercator projection (EPSG:3395) with an
> extent larger than "360° in longitude" but I get a truncated and reversed in
> longitude image.
> Do I make a mistake somewhere?
> Thanks for your help
>
> The mapfile content and the gdalinfo output on the original image are given
> below.
>
>
> Mapserver version: 6.0.1
>
> Call to mapserver:
> /path/to/mapserv -nh "QUERY_STRING=map=/tmp/world.
> map&service=wms&LAYERS=countries&FORMAT=image/png&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&STYLES=&SRS=epsg:3395&BBOX=-26080550.098232,-15000000,26080550.098232,15000000&WIDTH=885&HEIGHT=509"
> > foo.png
>
> Content of the mapfile:
> MAP
>   EXTENT -180 -90 180 90
>   IMAGECOLOR 255 255 255
>   IMAGETYPE agg
>   STATUS ON
>
>   OUTPUTFORMAT
>     NAME "agg"
>     MIMETYPE "image/png"
>     DRIVER "AGG/PNG"
>     EXTENSION "png"
>     IMAGEMODE "RGBA"
>     TRANSPARENT TRUE
>     FORMATOPTION "INTERLACE=false"
>   END
>
>   PROJECTION
>     "init=epsg:4326"
>   END
>
>   WEB
>     METADATA
>       "wms_srs"    "epsg:4326 epsg:3395 epsg:900913 epsg:3995"
>       "OWS_ENABLE_REQUEST"    "*"
>     END
>   END
>
>   LAYER
>     DATA "/tmp/world.tif"
>     NAME "countries"
>     PROJECTION
>       "init=epsg:4326"
>     END
>     STATUS ON
>     TYPE RASTER
>   END
>
> END
>
> Output of gdalinfo command:
> $ gdalinfo /tmp/world.tif
> Driver: GTiff/GeoTIFF
> Files: /tmp/world.tif
> Size is 1000, 500
> Coordinate System is:
> GEOGCS["WGS 84",
>     DATUM["WGS_1984",
>         SPHEROID["WGS 84",6378137,298.257223563,
>             AUTHORITY["EPSG","7030"]],
>         AUTHORITY["EPSG","6326"]],
>     PRIMEM["Greenwich",0],
>     UNIT["degree",0.0174532925199433],
>     AUTHORITY["EPSG","4326"]]
> Origin = (-180.000000000000000,90.000000000000000)
> Pixel Size = (0.360000000000000,-0.360000000000000)
> Metadata:
>   TIFFTAG_DOCUMENTNAME=/tmp/world.tif
>   TIFFTAG_XRESOLUTION=72
>   TIFFTAG_YRESOLUTION=72
>   TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
>   AREA_OR_POINT=Area
> Image Structure Metadata:
>   INTERLEAVE=BAND
> Corner Coordinates:
> Upper Left  (-180.0000000,  90.0000000) (180d 0'0.00"W, 90d 0'0.00"N)
> Lower Left  (-180.0000000, -90.0000000) (180d 0'0.00"W, 90d 0'0.00"S)
> Upper Right ( 180.0000000,  90.0000000) (180d 0'0.00"E, 90d 0'0.00"N)
> Lower Right ( 180.0000000, -90.0000000) (180d 0'0.00"E, 90d 0'0.00"S)
> Center      (   0.0000000,   0.0000000) (  0d 0'0.01"E,  0d 0'0.01"N)
> Band 1 Block=1000x8 Type=Byte, ColorInterp=Gray
>
>
>
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