nvidia ha scritto:
> I see, in the example code, which i know is out of date, but it gives me a
> starting block for learning this,
> 
> roadsStyle.addFeatureTypeStyle(sb.createFeatureTypeStyle(null,
> sb.createRule(ls2)));
> 
> http://docs.codehaus.org/display/GEOTOOLS/Putting+everything+together
> 
> i don't seen a condition being written like anything to do with Filter or
> Scale,  just code saying make sure the road is yellow.
> 
> I forgot to mention, in this particular function 
> createFeatureTypeStyle(null, sb.createRule(ls2) why would somebody give it
> the value "null"? because in the javadoc you can give it a typename

I believe you do when you want to create a style that can
be applied to multiple faeture type styles, that is, one that
does not depend on the feature attribute values for filters and
the like.

Cheers
Andrea

-- 
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

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