Hi Frank, Height is not measured wrt. the projection plane, it's measured from the ellipsoid or geoid. And both of these are common to any UTM zone, so there ought not be any difference when points are converted from one zone to the next.
However, if you switch from one datum to another, there usually will be a correction to apply. Best regards/Med venlig hilsen Lars V. Nielsen GisPro, Denmark http://www.gispro.dk/ http://www.gispro.biz/ http://hjem.get2net.dk/lars-online/ WGS84: 10.26'40"E 55.20'20"N ----- Original Message ----- From: "Frank Aaron (TX/EUS)" <[EMAIL PROTECTED]> To: "Mapinfo List" <[EMAIL PROTECTED]> Sent: Friday, October 10, 2003 7:13 PM Subject: MI-L Map Projection Error > Does anyone have a feel for the error that might result if one "re-projected" the > elevation data > for one UTM zone on to the neighboring UTM zone i.e., UTM Zone 16 -> 17? TIA, > > Frank > --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 8716
