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3D plot of 3 vectors
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Francesco Porretta
on 28 Nov 2020
Commented: Ameer Hamza
on 28 Nov 2020
- error -
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Ameer Hamza
on 28 Nov 2020
Original question asked by Francesco Porretta, restored from cache: http://webcache.googleusercontent.com/search?q=cache:https://www.mathworks.com/matlabcentral/answers/666483-3d-plot-of-3-vectors
Dear all, I have the three vectors reported in the file "data.mat" (x,y,z respectively).
I need to 3D plot them. However, something strange happen, since the z vector is 0 all around the borders, but plotting it I obtained that z is 0 only in 4 points (along y=0 axis), as shown in the figure below:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/432728/image.jpeg)
I wrote this code, to do the plot above:
x = data(:,1);
y = data(:,2);
[X,Y] = meshgrid(x,y);
z = data(:,3)
Z = meshgrid(z);
sup = surf(X,Y,Z)
thanks in andvance for your help
Accepted Answer
Ameer Hamza
on 28 Nov 2020
You first need to convert your data into a grid format using scattered interpolation
x = data(:,1);
y = data(:,2);
z = data(:,3);
mdl = scatteredInterpolant(x, y, z);
[xg, yg] = meshgrid(unique(x), unique(y));
zg = mdl(xg, yg);
sup = surf(xg,yg,zg)
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