Highligh a curve from a 3D plot

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letoppina 2020-1-30

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https://ww2.mathworks.cn/matlabcentral/answers/502781-highligh-a-curve-from-a-3d-plot

评论： Star Strider 2020-2-3

Hello,

I would like to highlight a curve (representing the maximum values of the curves) that is part of a 3D plot. I attach one picture for a reference (my objective is to obtain something like the red thick displayed in the figure).

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Star Strider 2020-2-3

Duplicate to: Highlight line from 3D plot

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Answer 1

Star Strider 2020-1-30

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https://ww2.mathworks.cn/matlabcentral/answers/502781-highligh-a-curve-from-a-3d-plot#answer_412849

在 MATLAB Online 中打开

Try something like this:

v = -1:0.1:1.2;                                                     % Create Data
[X,Y] = ndgrid(v);                                                  % Create Data
Z = exp(-(X.^2-Y.^2));                                              % Create Data
[zmax,idx] = max(Z,[],2);                                           % Find Maximum (Choose Dimension)
figure
surf(X, Y, Z)
hold on
plot3(v, ones(size(v))*max(v(:)), zmax, '-r', 'LineWidth',2.5)
hold off
grid on