Custom colorbar with predefined ticks
123 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Ash Ahamed
am 12 Nov. 2021
Kommentiert: Ash Ahamed
am 12 Nov. 2021
Hello! I am trying to create a custom colorbar on a countourf plot using the code below.
grid on
colormap(jet(15))
colorbar
c = colorbar
c.FontSize = 12
caxis([0 25.0])
c.Ticks = [0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 5.0 10.0 15.0 20.0 25.0]
With this code I am getting below colorbar, where as what I wanted is as shown on the right side. I want the colormap on the surface plot to match the colorbar as well. What am I doing wrong here? any advice are greatly appreciated.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/797634/image.png)
0 Kommentare
Akzeptierte Antwort
DGM
am 12 Nov. 2021
Bearbeitet: DGM
am 12 Nov. 2021
The answer I gave in your last question addressed this issue in part (at least for linear scales). For an arbitrary scale, you can just modify the example
% the given colormap from the last question
cmap = [0.851 0.851 0.851;0.498 1 1;0.298 0.8 1;0 0.6196 1;0 0 0.9529;0.498 1 0.498;0.09804 1 0.09804;0.09804 0.6 0.09804;1 0.749 1;1 0.4 1;0.8 0.09804 1;1 1 0;1 0.651 0;0.9529 0.298 0;0.8 0 0];
% dummy data
x = linspace(0,1,100);
y = x.';
z = max(x,y);
% plot setup
contourf(x,y,z,size(cmap,1)-1)
axis equal
colormap(cmap)
% wrangle the discrete colorbar tick alignment
cb = colorbar;
cbscalein = cb.Limits;
cbscaleout = [min(z(:)) max(z(:))];
ticks = linspace(cbscaleout(1),cbscaleout(2),size(cmap,1)+1);
cb.Ticks = diff(cbscalein)*(ticks-cbscaleout(1))/diff(cbscaleout) + cbscalein(1);
cb.TickLabels = [0:0.1:1 5:5:25]; % this is your arbitrary set of tick values
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Colormaps finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!