require 'pdf/writer'
require 'pdf/charts'
require 'pdf/charts/stddev'
pdf = PDF::Writer.new
chart = PDF::Charts::StdDev.new
chart.data << PDF::Charts::StdDev::DataPoint.new(1, 4.0000, 0.5774) <<
PDF::Charts::StdDev::DataPoint.new(2, 4.8333, 0.3727) <<
PDF::Charts::StdDev::DataPoint.new(3, 3.8333, 0.3727) <<
PDF::Charts::StdDev::DataPoint.new(4, 4.0000, 0.5774) <<
PDF::Charts::StdDev::DataPoint.new(5, 4.3333, 0.7454) <<
PDF::Charts::StdDev::DataPoint.new(6, 3.8000, 0.4000) <<
PDF::Charts::StdDev::DataPoint.new(7, 4.1667, 0.8975) <<
PDF::Charts::StdDev::DataPoint.new(8, 4.0000, 0.8165) <<
PDF::Charts::StdDev::DataPoint.new("Tot.", 4.1277, 0.7031)
chart.render_on pdf
pdf.save_as("2008042400.pdf")
