# addErrorbars

## Syntax

addErrorbars(values, series1 [,series2] [,x_axis]
[,relative])

## Description

Adding errorbars to your plots in matlab can be frustrating because it
can take some digging into the syntax and use of figures, and the input
format isn't always what you expect. ADDERRORBARS is a convenience
function that tries to make this a little easier. After you draw your bar
or line plot, call this function with the means you used to generate it,
and it will generate the needed bars.
Note that for simplicity, this function is written to handle only one
condition at a time. For plots with multiple conditions, the function
should be called multiple times.

## Usage

addErrorbars(values, series1) creates error bars around the
values. The upper and lower limit are an equal distance from the
mean. For example, if mean=4 and series1 = 1, then error bars would
extend from 3 to 5.
addErrorbars(values, series1, series2) creates error bars around
each point of the mean series, with lower and upper limits placed at the
specified locations. For example, if mean=4, series1=-1 and series2=2,
then error bars would extend from 3 to 6. Note that the same result would
be obtained with series1=2 and series2=-1.
addErrorbars(values, series1, series2, absolute) behaves as
above, but when relative is a logical set to true, then the values
provided in ll_series and ul_series are interpreted as absolute positions
rather than relative to the mean. For example, if mean=4, series1=1 and
series2=5, then error bars would extend from 1 to 5.
addErrorbars(values, series1, series2, relative, x_axis) adds
the error bars at the specified points along the x_axis, rather than the
default behaviour of placing the points at x = 1:length(values).