Ruby SVG::Graph module problem

ruby-talk
1

Simon,

#======Code==========
#!/usr/bin/ruby
require 'SVG/Graph/TimeSeries'
# Data sets are x,y pairs
data1 = ["17/6/72", 11, "11/1/72", 7, "13/4/04 17:31", 11, "11/9/01",

9,

"11/9/85", 2, "1/9/88", 1, "15/1/95", 13]
data2 = ["1/8/73", 18, "1/2/77", 15, "1/10/98", 4, "1/5/02", 14,
"1/3/95", 6, "1/8/91", 12, "1/12/87", 6, "1/5/84", 17, "1/10/80", 12]
title = "This is the title"
graph = SVG::Graph::TimeSeries.new( {
  :width => 640,
  :height => 480,
  :graph_title => title,
  :show_graph_title => true,
  :no_css => true,
  :key => true,
  :scale_x_integers => true,
  :scale_y_integers => true,
  :min_x_value => 0,
  :min_y_value => 0,

.. snip ..

#========output============
c:/ruby/lib/ruby/1.8/date/format.rb:236:in `dup': can't dup Fixnum
(TypeError)
  from c:/ruby/lib/ruby/1.8/date/format.rb:236:in `_parse'
  from c:/ruby/lib/ruby/1.8/parsedate.rb:9:in `parsedate'
  from
c:/ruby/lib/ruby/site_ruby/1.8/SVG/Graph/TimeSeries.rb:176:in
`min_x_value='

If you look, SVG is choking on the min_x_value. It looks like it expects
a date string in the format you use in your data set, not a Fixnum of 0
as you have set it.

Try entering the start date as a string for the value and see if that
fixes it.

Thanks,
Chris