Rubyvis

• https://github.com/clbustos/rubyvis

DESCRIPTION:

Ruby port of Protovis[http://vis.stanford.edu/protovis/], a Javascript visualization toolkit.

FEATURES/PROBLEMS:

This library implements almost completely core API of protovis, including all static marks, SVG builder class and data classes. Spec coverage is near 90%

Implemented:

• Marks: All, except transient and transitions.
• Layout: Arc, Cluster, Grid, Horizon, Indent, Matrix, Pack, Partition, Stack, Tree and Treemap. To implement: Bullet, Force, and Rollup.

Using protovis examples[http://vis.stanford.edu/protovis/ex/] as reference

• Conventional: All working
• Custom:
  • Backer's Barley
  • Burtin's Antibiotics: Scatterplot matrix
  • Cars: Parallel Coordinates
  • Crimea war: Grouped bar chart and line chart
• Hierarchies:
  • Treemap
  • Bubble Charts
  • Circle Packing
  • Dendogram
  • Icicle
  • Indent
  • Node-Link Tree
  • Sunburst
  • Treemap
• Networks:
  • Arc
  • Matrix

I try to maintain, when posible, complete compatibility with Javascript API, including camel case naming of functions.

User could use +pv+ freely, cause is defined as a global method which call Rubyvis.

Nokogiri is used as XML library. If not available, or $rubyvis_no_nokogiri is set to true, REXML is used. Nokogiri is 30%-35% faster that REXML on our test.

CURRENT PROGRESS

• pv.js
• pv-internals.js
• color/Color.js
• color/Colors.js
• data/Arrays.js
• data/Flatten.js
• data/Histogram.js
• data/Numbers.js
• data/LinearScale.js
• data/LogScale.js (incomplete)
• data/Nest.js
• data/QuantitativeScale.js
• data/OrdinalScale.js
• data/Scale.js
• layout/Arc.js
• layout/Cluster.js
• layout/Grid.js
• layout/Hierarchy.js
• layout/Horizon.js
• layout/Indent.js
• layout/Layout.js
• layout/Matrix.js
• layout/Network.js
• layout/Pack.js
• layout/Partition.js
• layout/Stack.js
• layout/Tree.js
• layout/Treemap.js
• mark/Anchor.js
• mark/Area.js
• mark/Bar.js
• mark/Dot.js
• mark/Label.js
• mark/Line.js
• mark/Mark.js
• mark/Panel.js
• mark/Rule.js
• mark/Wedge.js
• scene/SvgBar.js
• scene/SvgLabel.js
• scene/SvgLine.js
• scene/SvgPanel.js
• scene/SvgRule.js
• scene/SvgScene.js
• scene/SvgWedge.js
• text/Format.js (incomplete)
• text/NumberFormat.js (incomplete)

SYNOPSIS:

The primary API, based on Gregory Brown's Ruby Best Practices, uses blocks and name of marks as methods

require 'rubyvis'

vis = Rubyvis::Panel.new do 
  width 150
  height 150
  bar do
    data [1, 1.2, 1.7, 1.5, 0.7, 0.3]
    width 20
    height {|d| d * 80}
    bottom(0)
    left {index * 25}
  end
end

vis.render
puts vis.to_svg

The library allows you to use chain methods API, like original protovis

require 'rubyvis'

vis = Rubyvis::Panel.new.width(150).height(150);

vis.add(pv.Bar).
  data([1, 1.2, 1.7, 1.5, 0.7, 0.3]).
  width(20).
  height(lambda {|d| d * 80}).
  bottom(0).
  left(lambda {self.index * 25});

vis.render
puts vis.to_svg

See examples directory for original protovis examples adaptations and others graphics

THE MOST FREQUENT QUESTION (MFQ)

¿Why use a server-side technology if I can use a client-side, which is faster and more economic for developer?

If you want to present graphs: (a) complex and/or dynamically generated, (b) only on the web and (c) on modern browsers, Protovis[http://vis.stanford.edu/protovis/] is an excellent option. For simpler charts, Protovis is overkill. I recomend jqPlot[http://www.jqplot.com/]

Rubyvis is designed mainly for off-line operation, like batch creation of graphs for use on printed documents (rtf-pdf), with possibility of use easily the script for on-line use.

REQUIREMENTS:

Tested on Ruby 1.9.2, 1.9.3, 2.0.0, 2.1.1 and Jruby (mode 1.9)

INSTALL:

$ gem install rubyvis

LICENSE:

BSD 2-Clause (see LICENSE.txt)