pcolor and contour in the same map
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Hey all,
My problem is that I want to overlay to a pcolor of velocities in a curvilinear grid, the contour of another array that contains the batimetry ( I just one the line of 0 meters)
When I try just to hold on one figure and plot the otherone, the colorbar change and the contour line doesn't appear.
Thak you in advice,
Miguel.
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Answers (2)
Ameer Hamza
on 9 May 2020
Edited: Ameer Hamza
on 9 May 2020
This shows an example of overlaying contour and pcolor. You need to use the FaceAlpha property to make the surface make by pcolor transparent
x = linspace(-1,1);
y = linspace(-1,1);
[X, Y] = meshgrid(x, y);
Z = X.^2 + Y.^2;
pcolorData = sin(X) + cos(Y);
figure;
ax = axes();
hold(ax);
c = contour(X, Y, Z);
p = pcolor(X, Y, pcolorData);
p.FaceAlpha = 0.2;
colorbar;
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Georgy Shapiro
on 1 Nov 2022
A simple way to overlay a contour plot over pcolor can be seen from this example
p=pcolor(peaks(250));shading flat; colorbar; caxis ([-8 8 ])
hold on
contour(peaks(150),'k','LineWidth',0.5,'Show','on');
Here the data used in pcolor and contour are different and unrelated. If you wish to highlight your pcolor plot with the same data used for contours you can do it like this
p=pcolor(peaks(250));shading flat; colorbar; caxis ([-8 8 ])
hold on
contour(peaks(250),'k','LineWidth',0.5);
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