How can I use the ERRORBAR function with a logarithmic axis in MATLAB?

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.

Answer 1

[MathWorks Support Team]

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.

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