examples/third.rb in rubyvis-0.1.5 vs examples/third.rb in rubyvis-0.1.6

@@ -1,19 +1,22 @@
+# = Using parent
+# This example shows how to group bars on groups and use the parent property to identify and color them
 $:.unshift(File.dirname(__FILE__)+"/../lib")
 require 'rubyvis'
 
 vis = pv.Panel.new().width(200).height(150);
 
-bar= vis.add(pv.Panel).data(["a","b"]).add(pv.Bar)
+bar= vis.add(pv.Panel).data(["a","b","c","d"]).add(pv.Bar)
     .data([1,2])
     .width(20)
-    .height(60)
+    .height(lambda {60+parent.index*20+index*5})
     .bottom(0)
-    .left(lambda {|d,t| self.parent.index*60+self.index*30})
+    .left(lambda {|d,t| parent.index*60+index*25})
     
-    
- bar.anchor("bottom").add(pv.Label).text(lambda {|d,t| "#{t}-#{d}"})
- bar.anchor("top").add(pv.Label).text(lambda {"#{self.parent.index}-#{index}"})
+ bar.anchor("bottom").add(pv.Label).
+   text(lambda {|d,t| "#{t}-#{d}"})
+ bar.anchor("top").add(pv.Label).
+   text(lambda {"#{parent.index}-#{index}"})
     
     
 vis.render()
 #puts vis.children_inspect
 puts vis.to_svg