To achieve "perfect alignment" the bounds must indeed be identical.
I will qualify "perfect alignment" in the light of MI internal precision: every MI map coordinates is applied to an internal square grid of 2*10^9 "positions per side. Bound extreme values are assigned to the outer most positions and intermediary points are "adjusted" to the closest grid position. The same node in tables with different bounds may thus fall in different (relatively to the edges) positions. This a possible mis-alignment. Jacques Paris -----Original Message----- From: Ian Robertson [mailto:[EMAIL PROTECTED] Sent: 16-Jun-03 08:58 To: [EMAIL PROTECTED] Subject: MI-L Transforming Bounds with the same Projection Hi All, I have 3 versions of a data set all with the same projection but with different bounds: Mapinfo's default, one optimised for the GB National Grid and a third based on the extents of a subset of the data. I'm assuming that to make these data sets perfectly aligned with each other they have to have the same bounds. Is this true? If so, # is it possible to transform these to a common set of bounds? # how can this be done and # what choice is there in which selecting a common bounds? Thanks in advance for all help and advice. Ian - - - - - - - - - - - - - - - - - Ian Robertson, Information Services, E R D Dept Leicester City Council, LE1 6ZG, UK. T: +44 (0) 116 252 7230 F: +44 (0) 116 222 1091 E: [EMAIL PROTECTED] - - - - - - - - - - - - - - - - - Ian Robertson, Information Services, E R D Dept Leicester City Council, LE1 6ZG, UK. T: +44 (0) 116 252 7230 F: +44 (0) 116 222 1091 E: [EMAIL PROTECTED] --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 7304 --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 7306
