How to plot a triangular shape function on a triangular domain?

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Soroush Asarzadeh
Soroush Asarzadeh 2016 年 4 月 25 日
コメント済み: Soroush Asarzadeh 2016 年 4 月 27 日
Hello, I want to plot the following shape function: N(s,t)=t*(2*t-1) It has to look like the following diagramm:
but I get this one:
Here is my code:
[s,t]=meshgrid(0:0.1:1,0:0.1:1)
N3=@(s,t)t.*(2*t-1);
surf(s,t,N3(s,t))
I know that the problem is with the rectangular domain, that meshgrid generates. But I don't know how to define a triangular domain. Has anybody an idea?
Thanks

採用された回答

Mike Garrity
Mike Garrity 2016 年 4 月 25 日
I described one approach in this thread.
  3 件のコメント
Soroush Asarzadeh
Soroush Asarzadeh 2016 年 4 月 27 日
Thank you very much Mike!

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