[MS4W-Users] Getting blank tiles in google maps

[Brent Fraser]

Your extents and units are wrong.  They must be valid for the projection 
specified.  Change to

UNITS METERS

and remove the LAYER EXTENTS.

Best Regards,
Brent Fraser


On 9/8/2011 2:20 PM, vaibhavgarg wrote:
> *Ok now it is back to the empty tiles.. here is what the map file 
> looks like:
> That other error shows up anytime I specify a unknown projection..a 
> side product maybe. *
>
> MAP
>    NAME WMS_Server
>    SIZE 256 256
>    UNITS dd
>    EXTENT -2.290993 50.833757 -1.766036 51.105957
>    FONTSET '../etc/fonts.txt'
>    SYMBOLSET '../etc/symbols.txt'
>    STATUS ON
>    PROJECTION
>        "proj=merc"
>        "a=6378137"
>        "b=6378137"
>        "lat_ts=0.0"
>        "lon_0=0.0"
>        "x_0=0.0"
>        "y_0=0"
>        "k=1.0"
>        "units=m"
>        "nadgrids=@null"
>        "no_defs"
>    END
>    IMAGECOLOR 255 255 255
>    IMAGEQUALITY 95
>    IMAGETYPE png
>    OUTPUTFORMAT
>      NAME png
>      DRIVER 'GD/PNG'
>      MIMETYPE 'image/png'
>      IMAGEMODE RGB
>      EXTENSION 'png'
>    END
>
>    WEB
>      IMAGEPATH '/tmp/ms_tmp/'
>      IMAGEURL '/tmp/'
>      METADATA
>        'wms_title'           'Hampshire'
>        'wms_onlineresource'  'http://localhost:8088/cgi-bin/mapserv.exe?map=C:/ms4w/apps/gmap/htdocs/hampshire.map'
>        'wms_srs'             'EPSG:4326'
>        'wms_enable_request'  '*'
>      END
>      TEMPLATE 'fooOnlyForWMSGetFeatureInfo'
>    END
>
>    LAYER
>      NAME 'HampshireAreas'
>      TYPE POLYGON
> 	DEBUG ON
>      TEMPLATE fooOnlyForWMSGetFeatureInfo
>      EXTENT -2.290993 50.833757 -1.766036 51.105957
>      DATA 'C:/ms4w/apps/gmap/data/HampshireAreas.shp'
>      METADATA
>        'wms_title' 'HampshireAreas'
>      END
>      PROJECTION
> 	"proj=tmerc"
> 	"lat_0=49"
> 	"lon_0=-2"
> 	"k=0.9996012717"
> 	"x_0=400000"
> 	"y_0=-100000"
> 	"ellps=airy"
> 	"datum=OSGB36"
> 	"units=m"
> 	"no_defs"
>      END
>      STATUS DEFAULT
>      CLASS
>         NAME 'HampshireAreas'
>         STYLE
>           WIDTH 0.91
>           OUTLINECOLOR 0 0 0
>           COLOR 73 135 43
>         END
>      END
>    END
> END
>
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> View this message in context: Re: Getting blank tiles in google maps 
> <http://osgeo-org.1803224.n2.nabble.com/Getting-blank-tiles-in-google-maps-tp6746323p6773599.html>
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