Dear Listers, I've a problem that is probably simple for You Old Wolves in MI Pack. I have two tables. The first contains some hospitals' localization (say 30, in a region). The second contains each admissions these hospitals did in one year, with each patient's city of residence (say approx. 200,000 patients for 2,000 cities/villages). I'd like to create a "catchment area" for each hospital, in relation to their patients' residence. I thought to build a "distance matrix" in kilometres, created using MI coordinates, and the calculate the mean or median distance for each city/hospital, and finally superimpose a "buffer" (or maybe drawing a simple circle...). Does anyone have some suggestion/trick on the way to perform this in MI? Sorry for my bad english, thank you in advance. Alberto Zucchi, MD Epidemiology Office ASL Bergamo ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
