On Tue, Jun 25, 2013 at 5:23 PM, Jonathan Moules <
jonathanmou...@warwickshire.gov.uk> wrote:
> Hi List,
> I have a property that contains orientation for a label, unfortunately
> it's the wrong way (wouldn't it be nice if everyone just used the same
> convention for orienting and anchoring?). So where my data has "90" it
> should be pointing upward, but GeoServer points this downwards.
>
> Filter Functions should let me fix I think this but I'm coming unstuck -
> I'm struggling to find examples to work from.
>
> Psuedocode:
>
> if PROPERTY > 0
> - PROPERTY
> else
> + PROPERTY
> endif
>
> basically I want to put a minus (-) in front of positives and a plus (+)
> in front of negatives. How do I do this in an SLD?
>
Not sure it's going to move the arrow exactly where you'd like it, but try
this:
<ogc:Mul>
<ogc:Literal>-1</ogc:Literal>
<ogc:PropertyName>yourProperty</ogc:PropertyName>
</ogc:Mul>
Cheers
Andrea
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