This is a plugin for Highcharts to allow X and Y errorbars to be added as a series. Series type is called 'error_bar' to avoid conflict with builtin errorbar type.
Data format is: [x,y,left,right,low,high]
For example, if you had a data point that was at (20,30) and had an x error of +/- 2 and a y error of +/- 5, your data point would look like this:
[20,30,18,22,25,35]
Simple scatter plot, with the error_bar series added
Plot only X errorbars by setting the format to 'x'
Plot only Y errorbars by setting the format to 'y'
Remove whiskers by setting whiskerLength to 0