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# = Circle Packing
# Enclosure diagrams are also space-filling, using containment rather than adjacency to represent the hierarchy. As with adjacency diagrams, the size of any node in the tree is quickly revealed. Although circle packing does not use space as efficiently as a treemap, the “wasted” space effectively reveals the hierarchy. At the same time, node sizes can be rapidly compared using area judgments.
# By flattening the hierarchy, the pack layout can also be used to create "bubble charts":bubble_charts.html.
# This example uses RBP API.
$:.unshift(File.dirname(__FILE__)+"/../../lib")
require 'rubyvis'
def get_files(path)
h={}
Dir.glob("#{path}/*").each {|e|
next if File.expand_path(e)=~/pkg|web|vendor|doc|~/
pa=File.expand_path(e)
if File.stat(pa).directory?
h[File.basename(pa)]=get_files(pa)
else
h[File.basename(pa)]=File.stat(pa).size
end
}
h
end
files=get_files(File.expand_path(File.dirname(__FILE__)+"/../../lib/"))
format = Rubyvis::Format.number();
vis = Rubyvis::Panel.new do
width 600
height 796
margin 2
layout_pack do
nodes Rubyvis.dom(files).root("Rubyvis").nodes
size(lambda {|d| d.node_value})
node.dot do
fill_style {|d|
d.first_child ? "rgba(31, 119, 180, 0.25)" : "#ff7f0e"
}
title {|d|
d.node_name.to_s + (d.first_child ? "" : ": " + format.format(d.node_value))
}
line_width 1
end
node_label.label do
visible {|d| !d.first_child}
text {|d| d.node_name[0, Math.sqrt(d.node_value) / 10]}
end
end
end
vis.render()
puts vis.to_svg
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