Contour in a 3D surface plot

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Zhen Liu
Zhen Liu 2020-5-30
评论： Zhen Liu 2020-6-21
I am trying to creat a 3D surface plot with the contour of the surface projected on the top face (XY plane in Z = max)
Following is the code used:
f = figure('PaperSize',[8 8]);
Z = table2array(Table);
Z = Z(:,2:N+1);
Y = Table.Wavenumber_cm_1_;
X = [1:N];
SurfacePlot = surf(X,Y,Z);
ylabel('Wavenumber[cm^-1]');
xlabel('Aliquot Number');
zlabel('Absorbance[a.u.]');
colormap jet
shading interp
grid off;
hold on
contourf(X,Y,Z);
hold off
The problem is that the contour is created on XY plate (under the surface plot). How can move the contour up to the top surface?
Thank you.

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采纳的回答

Ameer Hamza
Ameer Hamza 2020-5-31
编辑：Ameer Hamza 2020-5-31
contour() object have an undocumented property named ContourZLevel: https://stackoverflow.com/a/8055468/4346708. For example,
[X,Y] = meshgrid(1:0.1:10,1:0.1:20);
Z = sin(X) + cos(Y);
ax = axes();
hold on
view(3);
s1 = surf(X,Y,Z);
[~, s2] = contourf(X,Y,Z);
s2.ContourZLevel = 5;

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