G'day Cinda,
The affine transformations in MI work well. There is possibly something
wrong with your projection clause or affine parameters.
For calculating affine parameters I have just completed an ActiveX program
that can be used on my web site. From two known points, or 1 point,
bearing and scale, this will calculate and output a pseudo projection
clause with the affine parameters.
You will need to use MS Internet Explorer, and set security settings to low
(digitally signing components costs money).
If you are still having problems, send me what you have and I will take a
look.
Regards
Neil
--------
Neil Moseley
Geodata Computing Services
http://www.iinet.net.au/~mose/
>Has anyone had success creating a projection in MI using an affine
>transformation as outlined in Appendix H of the User's Guide? When we
>follow the instructions for the projection string, and create a projection
>that presumably maps non-earth (local grid) coordinates to an earth based
>coordinate system, our results are WAY OFF...
>
>We note that if we create points with the new projection line, without
>bounds, and check the projection information of the newly mapped points,
it
>is not indicating the same projection we created the points with.
>
>Am I doing something totally insane here? Am I correct in my understanding
>of what this affine transformation is supposed to do?
>
>Any direct help or pointers to list threads etc would be greatfully
>appreciated and the more ASAP the more appreciated they will be!!!
>
>TIA
>
>Cinda Graubard
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