Patrick Lynch wrote:

/ ...

> The three classes or methods that will do everything I want, as shown in
> ref 2, are:
> 1. CanvasPlot
> 2. createLinePlot
> 3. createPlotAxis
> 
> What is the 'require' that is required to make these Class/Methods known
> to a Ruby program...

Most likely:

require 'tk'

-- 
Paul Lutus
http://www.arachnoid.com