Use Vertical Mapper > Create Grid > Region to Grid... A choosen column from the vector table will be the value of the grid celles. There is no interpolation.
Put grid back to vector with with Contour botton. Mvh. | Regards Jakob Lanstorp Senior Consultant Geographical Information & IT COWI A/S Odensevej 95 DK-5260 Odense S Tel +45 99 36 77 00 Direct +45 99 36 77 86 Fax +45 99 36 77 01 Email [EMAIL PROTECTED] http://www.cowi.dk -----Original Message----- From: Jim Wilson [mailto:[EMAIL PROTECTED] Sent: Friday, November 26, 2004 9:54 AM To: [EMAIL PROTECTED] Subject: MI-L Calculating Slope and aspect in a grid Hi all, I have a grid in MapInfo consisting of a large number (>300,000) of polygons with multiple attributes attached. One of those attributes is altitude. I want to calculate slope and aspect for each polygon - preferably in MapInfo. I know VM does this but I can't get the grid into VM without VM interpolating it in some way and changing the data. So does anyone have any wise words/ MB code / tool / algorithms to do this please? I imagine it is a relatively common task. TIA, Jim Jim Wilson Hilton of Fern, Brechin. Angus, Scotland --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.786 / Virus Database: 532 - Release Date: 29-Oct-04 --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 14237 --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 14238
