How to plot this function
1 view (last 30 days)
Show older comments
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1085110/image.png)
0 Comments
Accepted Answer
Star Strider
on 2 Aug 2022
Force the NaN value at (0,0) to be 0 —
[X,Y] = ndgrid(linspace(-5,5,50));
Z = (X.^3.*Y - X.*Y.^3)./(X.^2+Y.^2);
Z(isnan(Z)) = 0;
figure
surfc(X,Y,Z)
colormap(turbo)
.
2 Comments
More Answers (2)
Sam Chak
on 1 Aug 2022
Think it should look like this:
[X, Y] = meshgrid(-0.5:1/40:0.5);
Z = X.*Y.*(X.^2 - Y.^2)./(X.^2 + Y.^2);
surf(X, Y, Z), xlabel('x'), ylabel('y'), zlabel('f(x, y)')
3 Comments
Walter Roberson
on 2 Aug 2022
[X, Y] = meshgrid(-0.5:1/40:0.5);
Z = X.*Y.*(X.^2 - Y.^2)./(X.^2 + Y.^2);
Z(X==0 & Y == 0) = 0;
surf(X, Y, Z), xlabel('x'), ylabel('y'), zlabel('f(x, y)')
Abderrahim. B
on 1 Aug 2022
Hi!
Since you need to multiply by the truth, maybe this below:
f = @(x,y)((((x.^3).*y - x.*(y.^3)) ./ (x.^2 + y.^2) ).*( x ~= 0 & y~=0) + 0.*( x == 0 & y == 0))
[X, Y] = meshgrid([1:.5:10], [0:.1:10]);
F = f(X, Y) ;
surf(X, Y, F)
colorbar
Hope this helps!
See Also
Categories
Find more on Surface and Mesh Plots 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!