Editing IRStats Technical Documentation (section)

=== Sub Classes ===
Note that in the Visualisation/Graph/ directory, there is 'GraphLegend.pm'.  This is used to create the html for the graph legends.

====Visualisation::Graph::Bar.pm====
A Bar Graph.  It can have one or more bars in each division of the x axis.

To implement:
*set('title',string) - The title that will be in the graph image.
*set('x_title',string) - The title of the x axis.
*set('y_title',string) - The title of the y axis.
*set('x_labels',array_ref) - an array containing the labels for the x axis
*set('data_series, array_ref) - an array of arrayrefs, referencing data for each set of bars

====Visualisation::Graph::Line.pm====
A Line Graph.  There can be many lines on it

To implement:
*set('title',string) - The title that will be in the graph image.
*set('x_title',string) - The title of the x axis.
*set('y_title',string) - The title of the y axis.
*set('x_labels',array_ref) - an array containing the labels for the x axis
*set('data_series, array_ref) - an array of arrayrefs, referencing data for each line

====Visualisation::Graph::Pie.pm====
A Pie Graph

To implement:
*set('title',string) - The title that will be in the graph image.
*set('data_series, array_ref) - an array of hashrefs, {data => int, citation => string}, one for each slice