I have a volume surface created from proposed and existing surfaces, and a pretty complex polygon to calculate the volume within an alternative area.
When I select Volumes-Bounded Volumes and select my volume surface, it says "Unable to Compute Volume - Possibly illegal bounding polygon." It works with other polygons, not this one. I have tried the following:
FLATTEN the polygon to 2D (all z's = 0)
Re-draw the polygon with one single PE command
Explode and re-join the polygon with PE-Multiple-JOIN
What else can I try? How else can I get the volume under this specific area?
Solved! Go to Solution.
Solved by dgordon. Go to Solution.
You might have duplicate vertices in your polyline. You can try running the MapClean command, and set it to remove psuedo-nodes, and see if it helps.
Try
the Boundary command or the old -hatch command and retain the boundary.
Regards
Justin Ralston
sometimes you have to simply move vertices around ever so slighty to get it to work.
Dan
I ended up re-drawing the polygon in three smaller regions, and I was able to compute volume and just add everything together. Hopefully it keeps working, because I have to frequently update quantities for this area.
Thanks for the responses! 🙂