Hi Terry,
I have just been looking at your post in the Collaboratory forum regarding the integration of MathCad & AutoCad. I work as a design engineer and have recently been getting involved with land surveying so this would be a useful tool.
I have tried using your examples names Portal, I can get MathCad to extract the co-ordinates from the DXF file, but if I make my own modifications to the DXF the MathCad worksheet won�t update.
Would you be able to suggest a possible reason or some simple examples which I could follow.
Regards
Mike