Hey Guys, I am trying to show terrain parts which have a slope more 45 degrees. Using gradient showing slope every 15 degrees. I found a way to map vector Z and display its values, but I need to convert them to degrees somehow. Please see attached images. Cheers,

Thank you David. Now how to know which colour represent what degree ? [06]

You don’t because you initialise your gradient using the angle range. If you unplug the L0 and L1 inputs and just set the values to 0 and 90, you’ll know that green is horizontal and red is vertical.

Cool. It works. Last questions: How to smooth the result? currently it based on actual triangles. Why area where slope is less then 45 is red as well? Am I doing something wrong? Thank you [35]

Since you uploaded no files I can’t tell you whether there’s a mistake or not. It does look pretty noisy. Are you sure you’re not conflating face normals and vertex normals? Oh wait, I can tell from your image that you are in fact conflating face and vertex normals. Instead of the face normals com…

Hi David please see attached files. I think I calculating the angle incorrectly. I am getting an angle between world Z and face normal. But I need to display the actual slope angle relative to world plane. [David R: attachment removed, missing Rhino file and it locks up your computer for 10 minute…

Why does this file take forever to open? It’s still going… 10 minutes for every save/open iteration, dayum.

Works fine on my machine. I have attached an updated version. SlopeAnalysis.gh (465.5 KB)

Thank you David. I solved everything I wanted with your help. Is there a way to export vertex colour as a texture? Cheers

Grasshopper Terrain Slope in Degrees

Grasshopper

arten February 28, 2018, 1:53pm 10

Yep. It works.

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Grasshopper Terrain Slope in Degrees

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