If you are looking to make one specific feature inside a shapefile with
multiple features clear or transparent you can use the FILTER parameter
within the LAYER definition. In addition to setting the IMAGECOLOR at
the map level to the same color as your layer it may give you the
results you desire.
Following are two examples of using the FILTER parameter to make one
part of a shapefile layer disappear. It uses a field in the attributes
called "shapeid" you could use any field in your shapefile.
# the following will make feature with shapeid 12345 transparent and
leave the rest of the shapefile with default color rules
FILTER ( "[shapeid]" != "12345" )
# the following variation would use the shapeid= parameter provided in
the URL of cgi mapserver
FILTER ( "[shapeid]" != "%shapeid%" )
-Trent
Ernesto Barrera wrote:
Hi there,
I'm dealing with a layer containing polygon data for a given country
(shapefile).
Color inside the polygon can be easily set via COLOR style parameter.
I'm just looking for a way to apply color to the outside of the
polygon (i.e.:, paint the surrounding sea in solid blue)
Is there such a method inside Mapserver?
Is there a way to 'reverse' the shapefile to indicate that the wanted
feature is not inside the boudaries but the complementary area?
Thanks in advance,
PD.: My single layer is like this
LAYER
NAME mycountry
DATA mycountry.shp
TYPE POLYGON
STATUS ON
CLASS
NAME "boundaries"
STYLE
COLOR 255 0 0 # country area shown in red
END
END
END
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