[mapguide-users] Intersects selection layer

[Dave Wilson]

If you use the geometry in your selection you could loop through all the visible layers in your map and execute a SelectFeatures spatial query using intersects as the spatial operation. If your intersects result returns at least one value in the featurereader you can add the layer to your list. I'm not sure how complicated it is if you have multiple independent objects selected. There is a union operation you could use to merge the selection into one large geometry, but this operation is dead slow.

If your selection is simply just a single feature the loop idea above is one approach.

Dave

-----Original Message-----
From: mapguide-users-bounces at lists.osgeo.org [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of ehsan
Sent: Wednesday, June 17, 2009 11:03 AM
To: mapguide-users at lists.osgeo.org
Subject: [mapguide-users] Intersects selection layer


hi, i would like to know how create list of layer that intersects with the
selection layer..?

Thanks for your help,
ehsan
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