Hi, I'm new to the list, but I had a technical question concerning the st_overlaps function. My company stores about 26,000 of a certain type of boundary, you can think of them as something like a county boundary. When these boundaries are drawn, they are drawn butted up next to each other, so that there are no "easements" or white-space between each boundary. In order to ensure data quality, and no overlapping boundaries, I suggested using the st_overlaps function to tell the person drawing the boundary that "boundary xyz overlaps boundaries abc and efg". When I ran a preliminary query against all the boundaries, I found that almost every boundary we have overlaps with one or more other boundaries. My question is this. If I draw two squares next to each other, such that the right side of the left square, and the left side of the right square are the same line, does the st_overlaps function say that they are overlapping or not? And if it does, is there a way to ensure data quality other than the st_overlaps function? Something that would tell me that I have poorly drawn boundaries? Curtis Kansas City _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]
