Hi,
In Geoserver's heat-map, as mentioned in the documentations, I can select the
weightAtrr field, for example:
<ogc:Function name="vec:Heatmap">
<ogc:Function name="parameter">
<ogc:Literal>data</ogc:Literal>
</ogc:Function>
<ogc:Function name="parameter">
<ogc:Literal>weightAttr</ogc:Literal>
<ogc:Literal>field1</ogc:Literal>
</ogc:Function>
</ogc:Function>
My situation is that the weight attribute, that I want to create the heat-map
depending on it, is not a field of the layer, it's a Geotools custom function
that I created. This function takes the field id as a parameter, and makes some
queries according to it, then returns a number. For example the function is in
the form:
int GetTheValue(int id)
My question is that how to make this in SLD.
<ogc:Function name="vec:Heatmap">
<ogc:Function name="parameter">
<ogc:Literal>data</ogc:Literal>
</ogc:Function>
<ogc:Function name="parameter">
<ogc:Literal>weightAttr</ogc:Literal>
<!-- call the function here -->
</ogc:Function>
</ogc:Function>
Regards,Fawzy
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