Hi all, I’m new to dynamo and this forum, I’m hoping someone can assist me to get my first dynamo script working as currently it’s sending me into a spin :exploding_head: I’m trying to create a dynamo script to save time when creating a cut and fill volume analysis rather than manually changing the…

Your graph overwrites itself. For Volume Surface Elevation Analysis, you need another node. The one you used, is not suitable for Volume Surfaces. [image] Results in: [image]

Hi JaLo, thanks for the reply, if this is something you have done before can you show me how that would look please. (edited: seen the link you posted in the previous reply) the issue I get when I put the both colours into one is that the green is correct up to the datum but then the colours blend …

Hi Anton, thanks for the reply. I appreciate the graph overwrites itself, it was more of a demonstration of what I wanted to achieve for above and below the datum (cut and fill). I’ve tried using the surface analysis with the extra node as you suggested and unfortunately it doesn’t give me what I w…

Yes, the colors blend from the set color to white. The visual order in the Analysis tab might look a bit weird but the colors are correct. Lowest point and highest point are most dark. I’ll add to the backlog to reverse the cut range.

I appreciate the colours are correct (lowest and highest points being the darkest) but is there a way to reverse the cut range so the legend reads in ascending numerical order. Also, is there a way to change the white to another colour. Thanks again for your help

I’ll put it on the wish list :slight_smile:

Surface analysis for cut and fill, blending light/dark green and red either side of the datum

Civil 3D

JaLo February 23, 2026, 10:41pm 5

Here we had a similar situation.
Create a color range (index from 0 to 1) with both red and green.

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Surface analysis for cut and fill, blending light/dark green and red either side of the datum

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