Sorry, original message didn't work with explanatory attachment. Hope you understand without...
-----Original Message----- From: Dan Bowles [mailto:[EMAIL PROTECTED] Sent: Thursday, 12 August 2004 9:35 AM To: MapInfo-L Subject: Determining polygon areas and proportions within polygons Hi all I have a very large data set of vegetation classifications (various coloured polygons in the base of the example map attached), in a GIS also including proposed vegetation corridors (blue polygons), national parks (green polygons) and state forests (brown polygons). The veg corridors, NPs and SFs do not intersect, however, the vegetation classification polygons intersect across all other layers. I need to determine how much area there is of each vegetation class in total and how much area of each class is contained within each of a number of distinct veg corridors (blue), and generally within NPs (green) and SFs (brown). I also need to determine percentages of each veg class within NPs, SFs and veg corridors compared to the entire area. I am having trouble getting MapInfo to automatically generate these statistics for me, any advice you could give would be fantastic. Thanks for your help Dan Bowles
