[udig-devel] Layer Attribute Query

Jesse Eichar jeichar at refractions.net
Tue Aug 14 09:28:18 PDT 2007


Hi,

You'll want to look at the code snippets I sent in a previous email  
and the Geotools Filters and JTS operations.

Here's a tip:

ff = FilterFactoryFinder.createFilterFactory()
idFilter1 = ff.createFidFilter( id1 );

idFilter2 = ff.createFidFilter( id2 );

or = ff.createLogicFilter( FilterType.LOGIC_OR )

or.addFilter( idFilter1 );
or.addFilter( idFilter2 );

Something like that.

Jesse

On Aug 14, 2007, at 8:21 AM, Andy Cox wrote:

> Hello,
>
>
>
> I have a polygon layer which has about 10 polygons. I want to get  
> access to two specific polygons based on attribute query (e.g.  
> their IDs). Then I want to perform a Boolean spatial intersection  
> to find out they intersect. Does anyone have any pointers to where  
> I can find some info on this?
>
>
>
> Any help greatly appreciated.
>
> Thanks
> Andy
>
> _______________________________________________
> User-friendly Desktop Internet GIS (uDig)
> http://udig.refractions.net
> http://lists.refractions.net/mailman/listinfo/udig-devel

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