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

Question

MathWorks Support Team 2009-6-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/99844-how-can-i-use-the-errorbar-function-with-a-logarithmic-axis-in-matlab

评论： Ohad BarSimanTov 2016-7-27

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.

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Answer 1

MathWorks Support Team 2009-6-27

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/99844-how-can-i-use-the-errorbar-function-with-a-logarithmic-axis-in-matlab#answer_109192

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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