Imran Rajjad wrote:
> I have a polygon layer which also includes feilds such as long/lat. Is
> it possible fo us to use both lat long feilds to place an image label or
> a point along with the polygon shape itself? I am really trying to avoid
> duplicating the layer has a point layer for this small purpose only.
You could try the interiorPoint function, which, "Returns a point that is
either interior to the geometry, when possible, or sitting on its boundary,
otherwise". It wouldn't make any use of the lat/lon fields but rather operate
on the polygon geometry itself.
I think it would work in your SLD like this (not tested):
<FeatureTypeStyle>
<Rule>
<PolygonSymbolizer>
<!-- [your polygon style] -->
</PolygonSymbolizer>
<PointSymbolizer>
<Geometry>
<ogc:Function name="interiorPoint">
<ogc:PropertyName>GEOMETRY</ogc:PropertyName>
</ogc:Function>
</Geometry>
<!-- [your point style] -->
</PointSymbolizer>
</Rule>
</FeatureTypeStyle>
Note that using filter functions inside the <Geometry> element breaks SLD
validation.
Regards,
Miles Jordan, Systems Analyst
Australian Antarctic Data Centre | Australian Antarctic Division
Dept. for Sustainability, Environment, Water, Population and Communities
http://data.aad.gov.au
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