PolygonSymbolizer

The LineSymbolizer styles polygons. Lines are two-dimensional geometry elements. They can contain styling information about their border (stroke) and their fill.

Syntax

A <PolygonSymbolizer> can have two outermost tags:

Tag Required? Description
<Fill> No (when using <Stroke>) Determines the styling for the fill of the polygon.
<Stroke> No (when using <Fill>) Determines the styling for the stroke of the polygon.

The details for the <Stroke> tag are identical to that mentioned in the LineSymbolizer section above.

Within the <Fill> tag, there are additional tags:

Tag Required? Description
<GraphicFill> No Renders the fill of the polygon with a repeated pattern.
<CssParameter> No Determines the fill styling parameters.

When using the <GraphicFill> tag, it is required to insert the <Graphic> tag inside it. The syntax for this tag is identical to that mentioned in the PointSymbolizer section above.

Within the <CssParameter> tag, there are also additional parameters that go inside the actual tag:

Parameter Required? Description
name="fill" No Specifies the fill color for the polygon, in the form #RRGGBB. Default is grey (#808080).
name="fill-opacity" No Specifies the opacity (transparency) of the fill of the polygon. Possible values are between 0 (completely transparent) and 1 (completely opaque). Default is 1.

Example

Consider the following symbolizer taken from the Simple Point example in the Polygons section in the SLD Cookbook.

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       <PolygonSymbolizer>
         <Fill>
           <CssParameter name="fill">#000080</CssParameter>
         </Fill>
       </PolygonSymbolizer>

This symbolizer contains only a <Fill> tag. Inside this tag is a <CssParameter> that specifies a fill color for the polygont o be #000080, or a muted blue.

Further examples can be found in the Polygons section of the SLD Cookbook.
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