MATLAB: Plotting data with and without errorbars

errorbarplot

Hi!

I'm trying to plot my data with matlab. The problem is that I'd like to plot, on the same graph, my data with errorbars, and a curve without it. Could anyone help me with this?

It's probably very simple but I couldn't find a solution in the matab help nor on google.

Thanks in advance!

Aurélie

Best Answer

Use errorbar:

X = 0:pi/10:pi;
Y = sin(X);
E = std(Y)*ones(size(X));
errorbar(X,Y,E)

HTH,

Arnaud

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MATLAB: Is it possible to use a scalar for specifying the error bar length for ERRORBAR in MATLAB 7.9 (R2009b)

The ability to use scalar for error bar length in ERRORBAR is not available in MATLAB 7.9 (R2009b).

To work around this issue, download the attached version of the MATLAB file. Here are the steps:

1. Find the $MATLABROOT directory where $MATLABROOT is the MATLAB root directory on your machine, as returned by typing

matlabroot

at the MATLAB Command Prompt.

2. Quit MATLAB.

3. Download the attached file. Place the new file in the directory $MATLABROOT\toolbox\matlab\specgraph\

4. Restart MATLAB

5. After restarting MATLAB, issue the following command at the MATLAB Command Prompt:

rehash toolboxcache

6. The following code will now plot all error bars with the same length:

X = 0:pi/10:pi;
Y = sin(X);
E = 0.371;
dt_errorbar(X,Y,E)

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