How to get a colorbar to show only a specified range of values?
103 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I'm plotting a data set with a wide range of values (10 to 100000), but I only want to plot the values 10 to 300
Is there a way to have both the plotted data and colorbar range to 10-300, and rescale the colors to just this range? This is what I currently have.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1585961/image.png)
contourf(X_ert, Z_ert, log(ert_interp), ncont, 'edgecolor', 'none');
colormap('jet');
cb = colorbar('FontSize', 18, 'YTick', log([10 50 100 200 300]), 'YTickLabel', [10 50 100 200 300]);
0 Kommentare
Antworten (2)
Sulaymon Eshkabilov
am 8 Jan. 2024
Use caxis() command. E.g.:
% Create a data set:
D = rand(200, 200) * 1e5 + 10;
% Visualize the data set:
imagesc(D)
% Assign the colorbar scale/range to: 10.. to .. 300
caxis([10 300])
% Add colorbar:
colorbar
xlabel('X')
ylabel('Y')
title('Data Plot')
fprintf('MAX value of the data: DMax = %f \n', max(D(:)))
fprintf('MIN value of the data: DMin = %f \n', min(D(:)))
0 Kommentare
Voss
am 8 Jan. 2024
Use clim(). Example:
% made up variable values:
X_ert = 1:550;
Z_ert = 2080:2180;
ert_interp = exp(cosd(X_ert(ones(numel(Z_ert),1),:))*10);
min_val = min(ert_interp(:));
max_val = max(ert_interp(:));
ert_interp = (ert_interp-min_val)./(max_val-min_val)*(100000-10)+10;
ncont = 64;
figure
subplot(2,1,1)
contourf(X_ert, Z_ert, log(ert_interp), ncont, 'edgecolor', 'none');
colormap('jet');
cb = colorbar('FontSize', 18, 'YTick', log([10 50 100 200 300]), 'YTickLabel', [10 50 100 200 300]);
title('Without clim()')
subplot(2,1,2)
contourf(X_ert, Z_ert, log(ert_interp), ncont, 'edgecolor', 'none');
colormap('jet');
cb = colorbar('FontSize', 18, 'YTick', log([10 50 100 200 300]), 'YTickLabel', [10 50 100 200 300]);
clim(log([10 300]))
title('With clim()')
0 Kommentare
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!