[Mapserver-users] blank image--white empty image box
Joe Bussell
joe at otsys.com
Fri Oct 17 13:32:49 EDT 2003
Looks like TestRegion is the only layer that you have turned on. Is this your intent?
Try using a straight in-line layer like:
LAYER
name background
TYPE polygon
STATUS ON
CLASS
NAME "World"
OUTLINECOLOR 0 0 0
COLOR 30 144 255
SIZE 1
SYMBOL 0
END
FEATURE
POINTS
-180 90
-180 -90
180 -90
180 90
-180 90
END
END
END
My points are in lat/lon. I notice that in your mapfile you are specifiing meters. You will have to adjust the range accordingly. I use
PROJECTION
"proj=latlong"
END
as all my data is in lat/lon. I do not see a projection declaration in your mapfile.
You are also declaring a shapepath of "data". To be honest I am unsure what the result of this will be. Is this path supposed to be absolute? Try setting it to the absolute path of your test_region.shp directory.
Don't give up now, you are halfway there...
Cordially,
Joe Bussell
www.TrafficDodger.com
don wrote:
> am a newbie, when i try to load map am getting blank
> image! everything else is ok,,demo loadin ok ,,i have
> tried playing around with extents but nothing is
> showing,,not even errors..i sincerely don't know what
> am doing wrong and am stuck and very
> desperate..am in a verge of quiting,,i have been
> trying this for weeks,,my mapfile is as follows:
>
> #
> # Start of map file
> #
> NAME TEST
> STATUS ON
> SIZE 600 600
> EXTENT 35.786953 -0.721388 36.408545 0.094966
> UNITS METERS
> SHAPEPATH "data"
> IMAGECOLOR 255 255 255
>
>
> WEB
> HEADER test_header.html
> TEMPLATE test.html
> FOOTER test_footer.html
> MINSCALE 1000
> MAXSCALE 1550000
> IMAGEPATH "set in test.html"
> IMAGEURL "set in test.html"
> METADATA
> WMS_TITLE "scomMapserver"
> WMS_ACCESSCONSTRAINTS none
> WMS_ONLINERESOURCE
> "http://var/www/html/mapsite/test.html"
>
> WMS_SRS "EPSG:26915"
> END
> END
>
> QUERYMAP
> SIZE 200 200
> STATUS ON
> STYLE HILITE
> COLOR 255 0 0
> END
>
> #
> # Start of reference map
> #
> #REFERENCE
> # IMAGE graphics/ref.png
> # EXTENT 35.786953 -0.721388 36.408545 0.094966
> # SIZE 50 50
> # STATUS ON
> # COLOR -1 -1 -1
> # OUTLINECOLOR 255 0 0
> #END
>
> #
> # Start of legend
> #
> LEGEND
> KEYSIZE 18 12
> LABEL
> TYPE BITMAP
> SIZE MEDIUM
> COLOR 0 0 89
> END
> STATUS ON
> END
>
> #
> # Start of scalebar
> #
> SCALEBAR
> IMAGECOLOR 255 255 255
> LABEL
> COLOR 255 255 255
> SIZE tiny
> END
> STYLE 1
> SIZE 80 2
> COLOR 255 255 255
> UNITS MILES
> INTERVALS 1
> TRANSPARENT TRUE
> STATUS TRUE
> END
>
> #
> # Start of symbol definitions (we're only using a few)
> #
> SYMBOL
> NAME 'circle'
> TYPE ELLIPSE
> POINTS 1 1 END
> FILLED TRUE
> END
>
> #
> # Start of layer definitions
> #
>
> LAYER
> NAME test_region
> TYPE RASTER
> STATUS DEFAULT
> DATA "test_region"
>
> CLASSITEM 'cty_name'
> CLASS
> EXPRESSION 'Test'
> OUTLINECOLOR 128 128 128
> COLOR 225 225 185
> END
> CLASS #
> EXPRESSION /./
> OUTLINECOLOR 128 128 128
> COLOR 255 255 255
> END
> END
>
> LAYER
> NAME Towns_point
> GROUP cities
> TYPE RASTER
> DATA "Towns_point"
> STATUS OFF
> CLASSITEM 'city_name'
> CLASS
> NAME "Cities & Towns"
> EXPRESSION NONE
> COLOR 255 225 90
> TEMPLATE "population.html"
> END
>
> HEADER "population_header.html"
> FOOTER "population_footer.html"
>
> DUMP TRUE # allow GML export
>
> END
> END
>
> LAYER
> NAME Places_point
> TYPE POINT
> DATA "Places_point"
> STATUS OFF
> CLASS
> SYMBOL 'circle'
> SIZE 2
> NAME 'Townships'
> OUTLINECOLOR 181 181 145
> END
> END
>
>
> LAYER
> NAME Lakes_region
> TYPE RASTER
> STATUS OFF
> DATA "Lakes_region"
>
> CLASS
> NAME 'Lakes & Rivers'
> TEMPLATE "lakes.html"
> COLOR 49 117 185
> END
>
> HEADER "lakes_header.html"
> FOOTER "lakes_footer.html"
>
> TOLERANCE 3
>
> DUMP TRUE # allow GML export
>
> END
> END
>
> LAYER
> NAME Rivers_polyline
> TYPE LINE
> STATUS OFF
> DATA "Rivers_polyline"
>
> CLASS
> NAME "Streams"
> TEMPLATE "description.html"
> COLOR 49 117 185
> END
>
> HEADER "description_header.html"
> FOOTER "description_footer.html"
>
> TOLERANCE 5
>
> DUMP TRUE # allow GML export
>
> END
> END
>
> LAYER
> NAME Roads_polyline
> GROUP roads
> MAXSCALE 300000
> STATUS OFF
> DATA "Roads_polyline"
> TYPE LINE
> CLASS
> COLOR 0 0 0
> END
> END
>
> LAYER
> NAME Parks_region
> GROUP roads
> MAXSCALE 300000
> STATUS OFF
> DATA "Parks_region"
> TYPE ANNOTATION
> LABELITEM "Park_name"
> CLASS
> COLOR 255 255 255
> LABEL
> MINFEATURESIZE 40
> MINDISTANCE 150
> POSITION CC
> SIZE SMALL
> COLOR 0 0 0
> END
> END
>
> LAYER
> NAME Public Utils_point
> GROUP Public Utils
> MAXSCALE 600000
> STATUS OFF
> DATA "Public Utils_point"
> TYPE POLYGON
> CLASS
> NAME "Public Utils"
> COLOR 0 0 0
> END
> END
>
> LAYER
> NAME railway_polyline
> GROUP railways
> MAXSCALE 600000
> STATUS OFF
> DATA "railway_polyline"
> TYPE ANNOTATION
> LABELITEM "railway_num"
> CLASSITEM "railway_class"
> CLASS
> EXPRESSION "3"
> COLOR 0 0 0 # dummy color
> LABEL
> MINFEATURESIZE 50
> MINDISTANCE 150
> POSITION CC
> SIZE TINY
> COLOR 0 0 0
> END
> END
> CLASS
> EXPRESSION "2"
> COLOR 0 0 0 # dummy color
> LABEL
> MINFEATURESIZE 50
> MINDISTANCE 150
> POSITION CC
> SIZE TINY
> COLOR 0 0 0
> END
> END
> CLASS
> EXPRESSION "1"
> STYLE
> COLOR 0 0 0 # dummy color
> LABEL
> MINFEATURESIZE 50
> MINDISTANCE 150
> POSITION CC
> SIZE TINY
> COLOR 255 255 255
> END
> END
>
> LAYER
> NAME Places_point
> TYPE POINT
> DATA "Places_point"
> STATUS OFF
> CLASS
> NAME 'Places'
> COLOR 128 255 164
> SYMBOL 'circle'
> SIZE 7
> TEMPLATE "airports.html"
> END
>
> HEADER "airports_header.html"
> FOOTER "airports_footer.html"
>
> TOLERANCE 5
>
>
> END
> END
>
> LAYER
> NAME Towns
> NAME cities
> TYPE POINT
> DATA "towns_point"
> STATUS OFF
> LABELITEM "city_name"
> CLASSITEM "city_name"
> LABELMAXSCALE 500000
> CLASS
> EXPRESSION /./
> COLOR -1 -1 -1
> LABEL
> COLOR 0 0 0
> SHADOWCOLOR 218 218 218
> SHADOWSIZE 2 2
> TYPE BITMAP
> SIZE MEDIUM
> POSITION CC
> PARTIALS FALSE
> BUFFER 2
> END
> END
>
> END # Map File
>
> redhat linux 8.0
> MS4.0
>
> thanks.
>
>
> =====
>
> =====
> don
>
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