topic Re: Changing Surface Style to Create Heat Map in Civil 3D Forum

Changing Surface Style to Create Heat Map

SaeidHajahmadi — Mon, 09 Dec 2024 07:04:02 GMT

Hi,

I have a drawing with so many surfaces and volumes for each one. I would like to represent my volumes in a heat map, but I only want to have red and green for cut and fill. I tried to set a surface style for elevation for all but I couldn't dictate that to have only 2 colors if anyone can help me in this.

VOL 1.dwg

Thanks.

Saeid.

Re: Changing Surface Style to Create Heat Map

nkiakas — Mon, 09 Dec 2024 07:42:45 GMT

Hi @SaeidHajahmadi

Go to your surface and right click on it

Then go to tab "Analysis". For analysis type choose "Elevations" and below this add two ranges. One range negative (cut) and another positive (fill) and choose the red/blue colors

I found out that you have A LOT OF SURFACES.

You can do the above task in "mass production" with Dynamo for Civil 3d tool.

I hope i helped you

Regards

Re: Changing Surface Style to Create Heat Map

SaeidHajahmadi — Mon, 09 Dec 2024 23:48:29 GMT

Thanks for your response. I knew how to do it for one surface, my question was how to do it for so many surfaces. Can you guide me how can it be done in Dynamo?

Re: Changing Surface Style to Create Heat Map

nkiakas — Tue, 10 Dec 2024 05:18:53 GMT

Hi @SaeidHajahmadi

Your request inspired me to build a graph in Dynamo.

In general works, but in the final product i don't receive the red color for fill. I receive something "between" red and blue color.

Re: Changing Surface Style to Create Heat Map

SaeidHajahmadi — Tue, 10 Dec 2024 05:51:23 GMT

thanks again, color has no matter

can I see the graph you made in Dynamo please?

Re: Changing Surface Style to Create Heat Map

nkiakas — Tue, 10 Dec 2024 07:58:19 GMT

Hi @SaeidHajahmadi

See the attached

When you run the graph give some seconds to your system.

There are 182 surfaces to process.

I works in C3D 2025.2, did not check in earlier versions.

You may also have to install dynamo packages (you will be notified)

Regards

Re: Changing Surface Style to Create Heat Map

SaeidHajahmadi — Wed, 11 Dec 2024 02:54:06 GMT

Thanks so much. That was a great help.

Re: Changing Surface Style to Create Heat Map

rexhaujm — Wed, 11 Mar 2026 15:16:40 GMT

How do I create a style for this with specific colors for cut and fill at specific intervals? I am tired of setting this up every time for a client on multiple jobs. Why can't I make the surface display style and copy it to other drawings without it resetting the intervals?

Re: Changing Surface Style to Create Heat Map

saeid_hajahmadi — Thu, 12 Mar 2026 23:35:14 GMT

That is something that can't be done in surface style. You might need to have a look at the Dynamo for this.