hey all, In a seven parameter transform, from CRS1 to CRS2, there are three 'shift' parameters in x,y,z, three 'rotate' parameters, and one 'scaling' parameter.
Doesn't this implicitly assume that all three axes in each CRS are using the same unit? (NB obviously the two CRS's can have different units from each other.) I can see how scaling solves the difference between the units in the two CRS's but it seems that if CRS1 has all its axes in one unit but CRS2 has x,y in one unit and z in another then the transform has too few parameters. I'll grant it's probably a rare issue and therefore academic from that point of view but I wondered anyhow. cheers, adrian ------------------------------------------------------- All the advantages of Linux Managed Hosting--Without the Cost and Risk! Fully trained technicians. The highest number of Red Hat certifications in the hosting industry. Fanatical Support. Click to learn more http://sel.as-us.falkag.net/sel?cmd=lnk&kid=107521&bid=248729&dat=121642 _______________________________________________ Geotools-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-devel
