How to plot an error bar plot with standard deviation values in MATLAB?

Question

I am very new to MATLAB and expect a step-by-step solution. I have data, series(y), which I have to plot against (x). Also I have the standard deviation values for each data point of (y). Now I have to plot these series highlighting the error bars. How can I do that?

The data is in a text file sorted in columns as:

X = -50, -49, -48, -47....0....1, 2, 3, 4, 5....till 50

Y = 1.2, 1.0, 1.1, 1.9, 1.3.....

Standard deviation = 0.6, 0.5, 0.3, 0.6, 0.6.....

Also, how do I control the ticks and appearance property for these kinds of graphs?

As a side note: For saving/exporting figures, check out the excellent export_fig from FileExchange. It saves nice looking figures by default, without having to tweak a bunch of the figure properties yourself. — John Colby
– John Colby, Commented Oct 24, 2011 at 17:58

John Colby · Accepted Answer · 2011-10-24 17:47:13Z

12

x = 1:0.1:10;
y = sin(x);
e = 0.1 * randn(length(x), 1);

errorbar(x,y,e)

set(gca, 'Xlim', [4 10])
set(gca, 'XTick', 4:2:10)

enter image description here

See also get(gca) and get(gcf) for other properties to change.

For help on any of these functions, do, for example, help errorbar.

answered Oct 24, 2011 at 17:47

John Colby

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