How can I use the ERRORBAR function with a logarithmic axis in MATLAB?
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MathWorks Support Team
on 27 Jun 2009
Commented: Ohad BarSimanTov
on 27 Jul 2016
When I type the following at the MATLAB prompt, I get a an errorbar with a log x axis:
x = 1:100;
y = sin(x);
e = std(y)*ones(size(x));
errorbar(x,y,e)
set(gca,'xscale','log')
However, the errorbars of the first point in the resulting figure extend much farther than the other errorbars. I would like a function that can account for the logrithmic X-axis and make all of the errorbars have a uniform width.
Accepted Answer
MathWorks Support Team
on 27 Jun 2009
A function that can account for the logarithmic X-axis and make all of the errorbars have a uniform width is not available in MATLAB.
As a workaround, try using the function 'errorbarlogx' from MATLAB Central. When ERRORBAR is used on a logarithmic scale the horizontal lines also become scaled and the lines become uneven. 'errorbarlogx' makes the horizontal lines uniform again.
Note that MathWorks does not guarantee or warrant the use or content of these submissions. Any questions, issues, or complaints should be directed to the contributing author.
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