Hi John An option that you could use in the Voronoi polygon function that ships with MapInfo Pro (under the Objects menu).
This tool will create region objects around your town points so that at any point within that polygon, you are closest to the town centre it surrounds than you are to any other town centre. You can then assign a town centre to each business point by doing a simple join between the voronoi polygons and the business points. A nice by-product of this method is the ability to thematically map each voronoi polygon to display a count of the number of business points or other similar from data that may reside in the business points table. Hope this makes sense. Regards Tony Maber - Certified MapInfo Professional Manager - Business Services SPATIAL DECISIONS PTY LTD (A MapInfo Associate Partner) www.spatialdecisions.com.au Ph: (612) 9528-2822 Mob: (61) 404-861-858 Fax: (612) 9528-2833 -------------------------------------------------------------------------------- Check out HotSpot Detective and MapAnimated - two great additions to MapInfo Professional at www.spatialdecisions.com.au -------------------------------------------------------------------------------- Hello All, I have a table of 37 town centres and another table of 4000 businesses. What I would like to do is assign all the businesses to a town centre geographically. So basically calculate the town centre nearest the business location and perhaps create a line linking the two? I have tried spider graph (the MI tool) which hasn't worked and had had a go with CrimeStat but had no joy. Wonder if anyone has come across this before and had any ideas. Any help would be as always very much appreciated! Cheers, - JOHN John Nott Consultant/GIS Analyst ROGER TYM & PARTNERS _______________________________________________ MapInfo-L mailing list MapInfo-L@lists.directionsmag.com http://www.directionsmag.com/mailman/listinfo/mapinfo-l
