Plot 3D (colormap)

How can I plot a Matlab function in 3d (X, Y, Z) ?. I used the tri = delaunay (x, y) and h = trisurf (tri, x, y, z) function but I do not use it because it distorts the values. I need to get a color map of the distribution. Thank you very much, I hope you can help me.

[Walter Roberson]

Do you have the formula for the function, or do you only have a set of discrete data points?

[Yrobel Lima]

Discrete data point. X(),Y(),Z() Thanks

[KSSV]

Attach your data.....it should be plotted as you expected.

[Yrobel Lima]

Thanks, I attached the file with the values.

Answer 1

[KSSV]

[num,txt,raw] = xlsread('DATA.xlsx') ;
X = num(:,1) ;
Y = num(:,2) ;
Z = num(:,3) ;
N = 100 ;

x = linspace(min(X),max(X),N) ;
y = linspace(min(Y),max(Y),N) ;
[Xi,Yi] = meshgrid(x,y) ;
Zi = griddata(X,Y,Z,Xi,Yi) ;
surf(Xi,Yi,Zi)

[Yrobel Lima]

Thank you very much, your response was very helpful.

[KSSV]

Thanking is accepting the answer. :)

Answer 2

[Walter Roberson]

F = scatteredInterpolant(x,y,z);
[X,Y] = ndgrid(linspace(-295,295,500),linspace(-510,510,500));
Z = F(X,Y);
surf(X, Y, Z, 'edgecolor', 'none')

[Yrobel Lima]

Thank you very much, your response was very helpful.