How to plot a triangular shape function on a triangular domain?
3 views (last 30 days)
Show older comments
Soroush Asarzadeh
on 25 Apr 2016
Commented: Soroush Asarzadeh
on 27 Apr 2016
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
0 Comments
Accepted Answer
Mike Garrity
on 25 Apr 2016
3 Comments
Mike Garrity
on 26 Apr 2016
I think that passing a function handle into surf is making things more complicated than you really need.
I don't know what N3 is, but using the N from the top, I get this:
[s,t] = meshgrid(0:0.025:1);
z = t.*(2*t-1);
z(s+t > 1) = nan;
surf(s,t,z)

More Answers (0)
See Also
Categories
Find more on Graphics Performance in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!