replacing layer with different scales.
ElPer <K.Digeser <at> gmail.com>
2012-02-09 07:57:13 GMT
Hello
I need help with the mapfile of the mapserver and I hope you can help me.
I want to replace one layer with another at different scale, but I get
always an Error.
In the documentation I read that I can replace it with the same name
according to different scales:
"The name should be unique, unless one layer replaces another at different
scales."
Our Mapserver uses also Tilecache and I'm not sure if the error comes from
the mapserver or tilecache.
Thanks for your help
Here is my mapfile:
MAP
NAME Nautical Map
STATUS ON
# Spherical Mercator
EXTENT -20037508.34 -20037508.34 20037508.34 20037508.34
PROJECTION
"init=epsg:900913"
END
SIZE 2048 2048
IMAGETYPE mypng
OUTPUTFORMAT
NAME "mypng"
DRIVER AGG/PNG
MIMETYPE "image/png"
IMAGEMODE RGBA
EXTENSION "png"
TRANSPARENT ON
FORMATOPTION "INTERLACE=OFF"
END
WEB
IMAGEPATH "/opt/fgs2/tmp/ms_tmp/"
IMAGEURL "/ms_tmp/"
METADATA
"wms_srs" "EPSG:4326 EPSG:900913"
END
END
LAYER
NAME MIPARE_A_1
GROUP "MIPARE"
STATUS ON
PROJECTION
"init=epsg:4326"
END
TYPE POLYGON
DATA "data/Scale_S57_Shapefile/25000/DE416020/MIPARE/A/MIPARE.shp"
PROCESSING "CLOSE_CONNECTION=DEFER"
PROCESSING "LABEL_NO_CLIP=ON"
MINSCALEDENOM 0
MAXSCALEDENOM 24999
CLASS
EXPRESSION ([CATMPA] == 2)
STYLE
SIZE 10
OUTLINECOLOR 200 0 255
SYMBOL mipare_torea
END
END
CLASS
EXPRESSION (([CATMPA] == 3) || ([CATMPA] == 4))
STYLE
SIZE 10
OUTLINECOLOR 200 0 255
SYMBOL mipare_subea
END
END
CLASS
STYLE
SIZE 1
OUTLINECOLOR 200 0 255
SYMBOL dashed_line
END
END
END
LAYER
NAME MIPARE_A_1
GROUP "MIPARE"
STATUS ON
PROJECTION
"init=epsg:4326"
END
TYPE POLYGON
DATA "data/Scale_S57_Shapefile/45000/DE316001/MIPARE/A/MIPARE.shp"
PROCESSING "CLOSE_CONNECTION=DEFER"
PROCESSING "LABEL_NO_CLIP=ON"
MINSCALEDENOM 25000
MAXSCALEDENOM 499999
CLASS
EXPRESSION ([CATMPA] == 2)
STYLE
SIZE 10
OUTLINECOLOR 200 0 255
SYMBOL mipare_torea
END
END
CLASS
EXPRESSION (([CATMPA] == 3) || ([CATMPA] == 4))
STYLE
SIZE 10
OUTLINECOLOR 200 0 255
SYMBOL mipare_subea
END
END
CLASS
STYLE
SIZE 1
OUTLINECOLOR 200 0 255
SYMBOL dashed_line
END
END
END
END
And here is the Exception wich I get:
Mapserver message:
Did not get image data back.
URL:
http://127.0.0.1:8181/cgi-bin/mapserv?MAP=/opt/fgs2/www/htdocs/nautical.map&transparent=true&layers=MIPARE_A_1&styles=&service=WMS&width=612&format=image%2Fpng&request=GetMap&height=612&srs=EPSG%3A900913&version=1.1.1&bbox=1104629.71327%2C7248943.79384%2C1116324.57859%2C7260638.65917
Content-Type Header: application/vnd.ogc.se_xml
Response:
<?xml version='1.0' encoding="ISO-8859-1" standalone="no" ?>
<!DOCTYPE ServiceExceptionReport SYSTEM
"http://schemas.opengis.net/wms/1.1.1/exception_1_1_1.dtd">
<ServiceExceptionReport version="1.1.1">
<ServiceException code="LayerNotDefined">
msWMSLoadGetMapParams(): WMS server error. Invalid layer(s) given in the
LAYERS parameter.
</ServiceException>
</ServiceExceptionReport>
File "/opt/fgs2/www/htdocs/tilecache-2.10/TileCache/Service.py", line 323,
in cgiHandler
format, image = service.dispatchRequest( params, path_info, req_method,
host )
File "/opt/fgs2/www/htdocs/tilecache-2.10/TileCache/Service.py", line 226,
in dispatchRequest
(format, data) = self.renderTile(t, params.has_key('FORCE'))
File "/opt/fgs2/www/htdocs/tilecache-2.10/TileCache/Service.py", line 138,
in renderTile
data = layer.render(tile, force=force)
File "/opt/fgs2/www/htdocs/tilecache-2.10/TileCache/Layer.py", line 435,
in render
image = self.renderMetaTile(metatile, tile)
File "/opt/fgs2/www/htdocs/tilecache-2.10/TileCache/Layer.py", line 395,
in renderMetaTile
data = self.renderTile(metatile)
File "/opt/fgs2/www/htdocs/tilecache-2.10/TileCache/Layers/WMS.py", line
29, in renderTile
tile.data, response = wms.fetch()
File "/opt/fgs2/www/htdocs/tilecache-2.10/TileCache/Client.py", line 68,
in fetch
raise Exception("Did not get image data back. \nURL: %s\nContent-Type
Header: %s\nResponse: \n%s" % (self.url(), ctype, data))
--
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