labeling % slope and distance to feature lines

[youngEIT]

labeling is pretty straight-forward, but here's what i am trying to do:
i may have a feature line with 4 or 5 vertices. after i extract the elevation from a previously built surface, i want to set up a style that will pick the Z for the very first point, Z for the very last point, divide by the overall length and return the slope, and also the overall length. i tried setting up an expression but it treats the portion of the feature line between every two vertices as a segment and returns the slope for all segments individually, that i do not want. any suggestions appreciated.

 

[CarlB]

Draw a new line from beginning to end point and label that

Ok are you using civil 3d, because I don't believe AutoCAD can do that. A lisp routine could do that calculation, with user selecting the 3dpoly(?) and a label location.

 

[youngEIT]

yes, i am using Civil 3D 2009. do you mind sharing the lisp if you have it handy?

 

[chicopee]

If I understand you correctly, I can get the 3D length of the line and the angle which that line makes with the horizontal plane with the command LIST. Granted I don't get the slope but do an arctan of the angle and you'll have your slope in decimal form which you multiply by 100 to get the percent value. To get these values you'll have to relocate the UCS at each vertex.

 

[CarlB]

Well I didn't mean I had it, just that it could be done, and a fairly simple routine.
I just saw a similar routine, it may even work but with extraneous pipe information. With a little editing it may do the job.

http://www.cadtutor.net/forum/showthread.php?t=34538