The parameter YM or ZM shifts the coordinate system.
The coordinates of VERT are relativ to this new coordinate system. Everytime a point refers to the coordinate system, the new value YM or ZM is used. If you refer to a polygon point, nothing changes. This means Y=0 is actually Y=YM.
For example:
SECT 1
POLY TYPE O MNO 1 YM 50
VERT NO Y Z REFP
101 0 0
102 '=B' 0 101
103 0 '=H' 102
104 '=-B' 0 103
This could als be written as
SECT 2
POLY TYPE O MNO 1
VERT NO Y Z REFP
101 50 0
102 '=B' 0 101
103 50 '=H' 102
104 '=-B' 0 103
And what do you expect from shifting the cross section?
If you want to move the crosssection, just add 50 to the Y-Values.
Best regards,
Frederik Höller
Your SOFiSTiK Support Team
I wish to use both YM, ZM to shift a cross section to make compound sctions,
and to use REFP to simplify my input.
But unfortunately, combination of YM, ZM and REFP won’t work.