How to plot error bars in a logarithmic (base 10) plot

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Alessandro Biasioli
回答： Sailesh Kalyanapu 2022-5-20
Hi all,
I was trying to print horizontal and vertical error bars using logarithmic axis. I didn't managed to do so with the loglog command, and instead with those 2 commands it prints errorbars in a log scale but in natural log. So how can I print the same error bars in a 10 base log? I can't find if I can insert something else in the set command to print it right... Thank in advance!
errorbar(X_data, Y_data, ypos, yneg, xpos, yneg)
set(gca, 'XScale','log', 'YScale','log')

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回答（1 个）

Sailesh Kalyanapu
Sailesh Kalyanapu 2022-5-20
It seems that the input arguments are being passed incorrectly in the ‘errorbars’ plot function.
>> errorbar(x,y,yneg,ypos,xneg,xpos)
The ‘loglog’ function plots x- and y-coordinates using a base-10 logarithmic scale on the x-axis and the y-axis.
For more information on ‘errorbar’ and ‘loglog’, please refer to the below links to their respective documentations:
Line plot with error bars - MATLAB errorbar (mathworks.com)
Log-log scale plot - MATLAB loglog (mathworks.com)
You can also refer to this MATLAB Answers post for plotting error bars in a logarithmic (base 10) plot :
Error bars in loglog plot - (mathworks.com)

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