hi, maybe the overlay.mbx be util.
search this application in mapinfo-L tools.
bye
-----Original Message-----
From: "Tim Warman" <[EMAIL PROTECTED]>
Date: Tue, 17 Jul 2001 19:02:30 -0700
To: "Mapinfo-L" <[EMAIL PROTECTED]>
Subject: MI-L Overlap function
> Listers,
>
> I'm having trouble getting the Overlap function to work properly (i.e. the
> way I want it to) through the SQL dialogue box.
>
> I have two regions in separate tables which partially overlap. I want to
> create a new object that represents just this overlap area.
>
> I run a query using the SQL dialogue box which when viewed in the MapBasic
> window looks like this:
>
> Select Overlap(Layer_2.obj, Layer_1.obj) from Layer_2, Layer_1 where
> Layer_2.Obj intersects Layer_1.Obj into Selection
>
> Unfortunately this just selects the entire object in Layer_2.
>
> It's obvious I don't quite understand how the Overlap function works, but
> it's not well documented in the MapBasic help, and not documented at all in
> the MI help.
>
> Can anyone point me in the right direction?
>
> TIA,
> _____________________________
> Tim Warman
> Groundwater Geologist/GIS Guy
> Richard C. Slade & Associates LLC
> North Hollywood, CA, USA
> +1 (818) 506 0418
>
>
>
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