One way would be to create a convex hull from the point selection, then get the centroid of the convex hull polygon. I imagine Combine Objects using Attribute would work on your points so you can group them together by shared attribute first.
Regards Tim Dr Tim Rideout Director Visit XYZ at the International Map Trade Show in the Czech Republic on 24/25th Feb 2006. The XYZ Digital Map Company Unit 9 Phase 2 Hardengreen Business Park Dalhousie Road Dalkeith Scotland EH22 3NX Tel +44 131 454 0426 Fax +44 131 454 0443 Mobile + 44 7766 825937 E-mail [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andrew Tracey Sent: 27 February 2006 15:09 To: [email protected] Subject: [MI-L] Creating Points Can anyone help? I have a series of points in a MapInfo tab file, some of which share the same attributes, I can query to select all of these but does any know of a way of creating a centroid based on all of the points which share the same attribute? Thanks Andrew Tracey Information Support Officer Corporate Information Corporate Development South Tyneside Council Westoe Road South Shields NE33 2RL Tel: 0191 4247561 E-Mail : [EMAIL PROTECTED] **************************************************************************** ******************** **************************************************************************** ******************** Please do not print this e-mail if you can help it - and help protect the environment. **************************************************************************** ******************** This Message may contain confidential information and is protected by copyright. If you receive it in error please notify us and delete it without making use of or copying it. The addressee and other employees within the Council may read and copy any e-mail reply to this message and other e-mails you send to us. Whilst we use virus checking procedures we accept no liability for viruses and recipients must rely on their own virus checking procedures. **************************************************************************** ******************** The Council's web site address is www.southtyneside.info _______________________________________________ MapInfo-L mailing list [email protected] http://www.directionsmag.com/mailman/listinfo/mapinfo-l _______________________________________________ MapInfo-L mailing list [email protected] http://www.directionsmag.com/mailman/listinfo/mapinfo-l
