Hi All, and Bob While this seems as a good idea, I'd like to bring your attention to an important point of consideration. I assume that by 'optimizing' you mean 'shrink the bounds of a tab to increase accuracy'. Well, let's imagine that you have a set of tabs, all from the same area but containing different entities, for instance roads, railroads, lakes, populated areas etc... Then it is likely that the geographical coverage will differ considerably, and as a result, a bounds optimization will create as many sets of bounds parameters as there are tables.
Precisely this was the case when I got a set of set of tabs the other day that were exports from an AutoCAD system. I wanted to combine them to make fewer tables. Being dumb CAD data they had no attributes, only a rowID. But I could not understand why they did not appear on the map, even if the number of rows had increased. Solution: The table I picked as base to add the others to had so small bounds that only some objects would fit within, and the others lost their graphic component. Bottom line: While it's a good idea to optimize, don't forget to harmonize as well. Cheers, Mats.E 'Never use CAD systems for GIS work if you want to stay out of truoble' ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: :Email/ [EMAIL PROTECTED] ICQ#9517386: :---------------------------------------------------------------------: :Mail/ GISKRAFT, Mats Elfstroem, Vaepplingv 21, SE-227 38 LUND, SWEDEN: :Phones: +46 46 145959, +46 70 595 3935 : ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -----Ursprungligt meddelande----- Fran: Robert Karr [mailto:[EMAIL PROTECTED]] Skickat: den 26 november 2002 21:21 Till: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Amne: MI-L MI - Optimize Bounds Greetings All: Has anyone developed an MBX or whatever that can optimize the bounds of a batch of .TAB files "automatically"?? . ....Bob Robert Karr Phone: 517-373-3028 GIS Operator FAX: 517-373-0171 Science and Technology Division Legislative Service Bureau Michigan State Legislature 124 West Allegan Street, 4th Floor pob 30036 Lansing, MI 48909-7536 USA --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 4284 --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 4287
