Grasshopper

algorithmic modeling for Rhino

Application of basic slope analysis of a delaunay mesh of an urban sewershed.

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Comment by Psorcufi on June 4, 2011 at 4:58am

Hello David, I am currently working on a terrain analysis for my dissertation project (similar to the one you did for Dumbarton Seworshed). I downloaded the definition you posted on the 16th of march and I am trying to figure out what some of the values mean in order to adapt it to the conditions given by my site and wonder if you could help me to understand some of the inputs you use in it..

- In order to get the elevation you divide 278 (panel) by the z values of the points of the mesh, is this number the max hight of the terrain?

- then you have a slider (0 to 20) to divide the output of the previous division, what does this value stand for?

-is the slider in the ground saturation group related to the amount of rain you got in the site? or what does it show?

Many thanks and sorry to bother you!

Ivan

Comment by David Wooden on March 16, 2011 at 12:03pm

I used a grasshopper component written by David Rutten and made some modifications to account for elevation in addition to slope. You can disconnect the elevation factors pretty easily to arrive at just the slope you see above. I added the definition to a discussion thread...

http://www.grasshopper3d.com/forum/topics/slopeelevation-gradient

Comment by Matthew Schexnyder on March 16, 2011 at 7:23am
Hi David, I am wondering what your method was for producing this analysis.  Is slope analysis a native function of rhino or have you set up some computation of the slope through grasshopper?  I am working on a similar landscape scale and would love to render an analysis like this for my project.  Best Regards, Matthew

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