PDF::Writer:PDF::Charts::StdDev#show_labels, #show_labels=
require 'pdf/charts/stddev' pdf = PDF::Writer.new chart = PDF::Charts::StdDev.new p chart.show_labels chart.show_labels = false chart.data << PDF::Charts::StdDev::DataPoint.new(1, 4.0000, 0.5774) chart.render_on pdf pdf.save_as("2008042700.pdf")
で、
true