Post by Peter Cooper on August 17th, 2006

Scruffy: A beautiful graphing toolkit for Ruby

Scruffy

Scruffy is a new graphing toolkit for Ruby developed by Brasten Sager. It's highly customizable and powerful. You can change the backgrounds, mix different types of graph together, change the graphics used for the points, change the line types, etc. You can also render to different types of output. Brasten presents some code examples at his blog. For demonstration, some is repeated below:

graph = Scruffy::Graph.new
graph.title = "Comparative Agent Performance"
graph.value_formatter = Scruffy::Formatters::Percentage.new(:precision => 0)
graph.add :stacked do |stacked|
	stacked.add :bar, 'Jack', [30, 60, 49, 29, 100, 120]
	stacked.add :bar, 'Jill', [120, 240, 0, 100, 140, 20]
	stacked.add :bar, 'Hill', [10, 10, 90, 20, 40, 10]
end
graph.point_markers = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun']

graph.render(:width => 800, :as => ‘JPG’)

(Thanks to Brasten for fixing my sloppy cut and paste job. See comments.)

This entry was posted on Thursday, August 17th, 2006 at 9:44 pm and is filed under Cool, Elsewhere, Tools. Responses are currently closed, but you can trackback from your own site.

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5 Responses to “Scruffy: A beautiful graphing toolkit for Ruby”

  1. #1
    Sean Cribbs Says:
    August 18th, 2006 at 12:54 pm

    Not a big deal, but might that first line of the code sample be missing a do |graph| ?

  2. #2
    brasten Says:
    August 18th, 2006 at 3:18 pm

    No, and the 'end' after graph.point_markers shouldn't be there. That stuff isn't supposed to be in a block:

    graph = Scruffy::Graph.new
    graph.title = "Comparative Agent Performance"
    graph.value_formatter = Scruffy::Formatters::Percentage.new(:precision => 0)
    graph.add :stacked do |stacked|
    stacked.add :bar, 'Jack', [30, 60, 49, 29, 100, 120]
    stacked.add :bar, 'Jill', [120, 240, 0, 100, 140, 20]
    stacked.add :bar, 'Hill', [10, 10, 90, 20, 40, 10]
    end
    graph.point_markers = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun']

    graph.render(:width => 800, :as => ‘JPG’)

  3. #3
    Peter Cooper Says:
    August 18th, 2006 at 3:24 pm

    Oops. Sorry about that. It was a bit of a quick hack together. I will now fix with your code. Thanks!

  4. #4
    Peter Cooper Says:
    August 18th, 2006 at 3:31 pm

    Now fixed.

  5. #5
    brasten Says:
    August 18th, 2006 at 7:37 pm

    Thanks Peter! To be honest I'd read that block of code here a dozen times and didn't notice that until Sean said something. :)