How can I reduce the number of digits in the colorbar?

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Andrea Cesaro 2023-9-4

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评论： Andrea Cesaro 2023-9-5

采纳的回答： MarKf

How can I reduce the number of digits in the colorbar in a code like this:

figure(2)

pcolor(x, y, diff_tau1);

colorbar;

xlabel('x [m]')

ylabel('y [m]')

grid on

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Dyuman Joshi 2023-9-4

Alright.

However, if we display the values upto only 2 or 3 significant digits after the decimal, all the values will be same (0.20 or 0.199), and that would be confusing.

Andrea Cesaro 2023-9-4

Yes, but this is not important, I want to reduce the number of digits.

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采纳的回答

MarKf 2023-9-4

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编辑：MarKf 2023-9-4

在 MATLAB Online 中打开

You likely need something like this.

surf(1+peaks*0.00001) %obvs this is a quick and bad example, it'd have helped to have the actual data, but anyway

cb = colorbar; %run until here to see what I mean and what changes

cbvals = get(cb,'XTick'); %nowadays cb.XTick would do the trick... let's say backwards compatibility

set(cb,'XTickLabel',sprintfc('%.3f',cbvals)); % 2 or 3

You can see above that there might be issues depending on what's your data. You could also truncate what's displayed instead of rounding (which is what sprintf does) or get the bounds and print depending on those (something like t=get(cb,'Limits'); tks = linspace(t(1),t(2),5); set(cb,'Ticks',tks); set(cb,'TickLabels',arrayfun(@(x) sprintf('%.2f',x),tks,'un',0) )