[mapguide-users] Select from Selection

[Jackie Ng]

Try the following.

- Create an MgSelection from your selection xml.
- Create an MgFeatureQueryOptions object, set its filter to the
GenerateFilter() of the MgSelection object.
- Combine this query with your spatial filter.
- Pass it to SelectFeatures() of MgFeatureService. The returned
MgFeatureReader should have all the features from your current selection
that satisfy your spatial filter.

Hope that helps.

- Jackie


JillP wrote:
> 
> I am interested in allowing users to select features through a query, then
> refine their selection spatially.  I believe this used to be called an
> nselect (at least in the old ArcInfo world).  I can get the selection via
> a text query and the selection via a spatial query -- but have not figured
> out how to refine my text query results with a selection on the map.  Has
> anybody done this? Or have any idea how to accomplish this?  I'm stuck on
> how to get it going.
> 
> Thanks for your help,
> Jill
> 

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