[Tilecache] Problems displaying raster layers from Mapserver WMS

[Roger André]

Just answering my own question about this.  It appears that the omission of
a METADATA section in my raster layer mapfile was the reason that Tilecache
wouldn't pick it up.  After I added one to it, I had no problems anymore.
--



On Wed, Sep 17, 2008 at 2:01 PM, Roger André <randre at gmail.com> wrote:

> Hi,
>
> I'm having a problem with the display of RASTER type layers from my
> Mapserver WMS.  Basically, if I point the tilecache.cfg to a layer that is a
> vector type (POLYGON or LINE), Tilecache will properly read it, make a tile
> request, and cache it.  However, if I change the layer in the .cfg to point
> to a RASTER layer, Tilecache doesn't seem to make the request, and no tile
> is generated.  The only way I've found so far to display just the raster
> data with Tilecache is to call on both a vector and a raster layer at the
> same time, and set the opacity of the vector to "0".
>
> *My tilecache.cfg entry looks like this:*
> [temp]
> type=WMS
> url=
> http://10.10.10.143/cgi-bin/mapserv?map=/var/www/mapfiles/temp2/temp.map
> layers=countries
> spherical_mercator=true
> metabuffer=15
>
> *My mapfiles look like this:*
> # temp.map
> MAP
>   NAME  'temp'
>   PROJECTION
>     "init=epsg:4326"
>   END
>   EXTENT -130.000000 -50.000000 -30.000000 60.000000
>   SIZE 800 800
>
> # layers to include in map
>   INCLUDE "imagery.map"
>   INCLUDE "countries.map"
>
> # WEB PARAMETERS
>     WEB
>         IMAGEURL "http://localhost/tmp"
>         IMAGEPATH "/var/www/html/tmp"
>     END # end web
>
> # OUTPUT FORMAT SPECIFICATION
>   OUTPUTFORMAT
>    NAME png
>    DRIVER "AGG/PNG"
>    MIMETYPE "image/png"
>    IMAGEMODE RGBA
>    EXTENSION "png"
>    FORMATOPTION "TRANSPARENT=ON"
>    FORMATOPTION "INTERLACE=OFF"
>    TRANSPARENT ON
>   END #end outputformat
>
> *- imagery.map:*
> # imagery.map
>   LAYER
>     NAME 'imagery'
>     TYPE RASTER
>     STATUS DEFAULT
>     DATA  '3k_color.tif'
>     TRANSPARENCY 50
>     PROJECTION
>       "init=epsg:4326"
>     END
>   END
>
> *- countries.map:
> *  LAYER
>     NAME 'countries'
>     TYPE POLYGON
>     STATUS DEFAULT
>     PROJECTION
>       "init=epsg:4326"
>     END
>   TRANSPARENCY 0
>
>     METADATA
>       "wms_srs"             "EPSG:4326 EPSG:900913"
>       "wms_name"            "countries"
>       "wms_server_version"  "1.1.1"
>       "wms_format"          "image/png"
>       "wms_onlineresource"  "
> http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/temp/temp.map&"
>     END
>
>     DATA 'countries_simpl.shp'
>       CLASS
>         STYLE
>           OUTLINECOLOR 255 0 0
>         END
>       END # end class
>   END # end layer
>
> It seems to me like something about the Mapserver RASTER layer is
> displeasing to Tilecache, but I'm not sure what.
>
> Has anyone hit this problem, and is there a simple fix for it?
>
> Thanks,
>
> Roger
> --
> *
> *
>
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