Configuration Options for PolygonSymbolizer

A PolygonSymbolizer is often used to render the area enclosed by a polygon. For example, the rundemo.py and rundemo.cpp applications use PolygonSymbolizer objects to "fill-in" Canadian provinces with different colors and to make bodies of water look blue.

parameter	value	default
fill	CSS colour	"grey"
fill-opacity	0.0 - 1.0	1.0
gamma	0.0 - 1.0	1.0

* Note: gamma is available in Mapnik >= 0.7.0, see #428 for more detail.

Examples

Default

<PolygonSymbolizer />

Default fill with Gamma correction

<PolygonSymbolizer>
    <CssParameter name="gamma">.65</CssParameter>
</PolygonSymbolizer>

Custom Fill and Opacity

<PolygonSymbolizer>
     <CssParameter name="fill">steelblue</CssParameter>
     <CssParameter name="fill-opacity">0.5</CssParameter>
</PolygonSymbolizer>

Python

p = PolygonSymbolizer(Color('steelblue'))
p.fill_opacity = 0.7

C++

FIXME

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Example output of the rundemo.py utilizing the PolygonSymbolizer for provinces and water bodies: