When you get back the feature collection of those things "near" to A; you can call the Collection_Max function on the featurecollection directly; this is way faster (and may be optimzied into SQL if your datastore is backed by SQL):
- http://docs.codehaus.org/display/GEOTDOC/10+FeatureCollection+Aggregate+Functions Cheers, Jody Gabriella Turek wrote: > I have two shape files, call them A and B. I need to: > (1) find out the features in B that are "near" to each feature in A. > (2) Interrogate an attribute value of these "near" features and pick the > highest value. > > I actually figured out how to do it, but I don't think I am doing it "right", > i.e. using all the tools > at my disposal. > > My steps are: > (1) creat up geometry filter to find features in B close to A > (2) loop thru each feature in A to find these "near" B features > (3) when one is found, interrogate attribute value and establish if it's a > new max > > I get the nagging feeling that I dont' need to do this looping and that - > moreover - I can > have yet another filter which looks for my max value. I've tried a few things > with little success. > Any help will be greatly appreciated. > Gaby > > > > *************************************************************** > ** Gabriella Turek [EMAIL PROTECTED] ** > ** National Institute of Water & Atmospheric Research (NIWA) ** > ** PO Box 8602 Christchurch New Zealand +64-3-343-8067 ** > *************************************************************** > > > ------------------------------------------------------------------------- > SF.Net email is sponsored by: > Check out the new SourceForge.net Marketplace. > It's the best place to buy or sell services for > just about anything Open Source. > http://sourceforge.net/services/buy/index.php > _______________________________________________ > Geotools-gt2-users mailing list > Geotools-gt2-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Geotools-gt2-users mailing list Geotools-gt2-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users