This post originated from an RSS feed registered with Ruby Buzz by Michael Neumann. Original Post: Using Ploticus from Ruby Feed Title: Mike's Weblog Feed URL: http://www.ntecs.de/blog-old/index.rss?cat=ruby&count=7 Feed Description: Blogging about Ruby and other interesting stuff. Latest Ruby Buzz Posts Latest Ruby Buzz Posts by Michael Neumann Latest Posts From Mike's Weblog

  require 'ploticus'

  pl = Ploticus.new

  pl.data = (0..10).map {|x| [x, x**2]}

  pl.area {|a|
    a.title = "The title of this plot"
    a.xrange = [0,10]
    a.yrange = [0,100]
  }

  pl.xaxis {|a|
    a.stubs = "incremental"
    a.label = "x"
  }

  pl.yaxis {|a|
    a.stubs = "incremental 10"
    a.label = "x^2"
    a.grid = {:color => "blue"}
  }

  pl.lineplot {|a|
    a.xfield = 1    # use first column for x
    a.yfield = 2    # use second column for y
    a.linedetails = {:color => "red"}
  }

  puts pl.plot!

And the result is:

You can download my ruby-ploticus library from: ntecs.de/viewcvs/viewcvs/ruby-ploticus/

A more advanced example with four plots on a page can be found here. The diagram it generates is shown below: