How to plot an array of 4 columns?

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Pierre
Pierre 2024-12-5
评论： Star Strider 2024-12-5
Hello,
I have an array of four columns: X,Y,Z,A.
I need to visualize this data.
I tried surf3 and plot3 but it seems that the data I have is not in the right format for this function.
I suspect A is going to be a color, but I am not sure how to do it
Thanks

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Star Strider
Star Strider 2024-12-5
Ran in:
I wrote this to solve a similar problem. The original problem was to create a surf plot to match a scatter plot.
Try this —
N1 = 100;
x = randn(N1,1);
y = randn(N1,1);
z = randn(N1,1);
c = 10*rand(size(z));
figure
stem3(x, y, z)
hold on
scatter3(x, y, z, 100, c, 'filled')
hold off
CL = clim;
colormap(turbo)
xlabel('X')
ylabel('Y')
zlabel('Z')
Zfcn = scatteredInterpolant(x, y, z, 'natural','none');
Cfcn = scatteredInterpolant(x, y, c, 'natural','none');
N = 150;
xv = linspace(min(x), max(x), N);
yv = linspace(min(y), max(y), N);
[Xm,Ym] = ndgrid(xv, yv);
Zm = Zfcn(Xm, Ym);
Cm = Cfcn(Xm, Ym);
figure
surfc(Xm, Ym, Zm, Cm, 'EdgeColor','interp')
clim(CL)
colormap(turbo)
xlabel('X')
ylabel('Y')
zlabel('Z')
The apparently random colours match in both.
.
  2 个评论
Star Strider
Star Strider 2024-12-5
My pleasure!
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