| Class | SVG::Graph::Pie |
| In: |
temp/Graph/Pie.rb
|
| Parent: | Graph |
require 'SVG/Graph/Pie'
fields = %w(Jan Feb Mar)
data_sales_02 = [12, 45, 21]
graph = SVG::Graph::Pie.new({
:height => 500,
:width => 300,
:fields => fields,
})
graph.add_data({
:data => data_sales_02,
:title => 'Sales 2002',
})
print "Content-type: image/svg+xml\r\n\r\n"
print graph.burn();
This object aims to allow you to easily create high quality SVG pie graphs. You can either use the default style sheet or supply your own. Either way there are many options which can be configured to give you control over how the graph is generated - with or without a key, display percent on pie chart, title, subtitle etc.
www.germane-software/repositories/public/SVG/test/single.rb
Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
Copyright 2004 Sean E. Russell This software is available under the Ruby license
| RADIANS | = | Math::PI/180 |
| datapoint_font_size | [RW] | The font size of the data point labels |
| expand_gap | [RW] | The amount of space between expanded wedges |
| expand_greatest | [RW] | If true, expand the largest pie wedge |
| expanded | [RW] | If true, "explode" the pie (put space between the wedges) |
| shadow_offset | [RW] | Sets the offset of the shadow from the pie chart |
| show_actual_values | [RW] | If true, display the actual field values in the data labels |
| show_data_labels | [RW] | If true, display the data labels on the chart |
| show_key_actual_values | [RW] | If true, display the actual value of the field in the key |
| show_key_data_labels | [RW] | If true, display the labels in the key |
| show_key_percent | [RW] | If true, display the percentage value of the wedges in the key |
| show_percent | [RW] | If true, display the percentage value of each pie wedge in the data labels |
| show_shadow | [RW] | If true, displays a drop shadow for the chart |
Adds a data set to the graph.
graph.add_data( { :data => [1,2,3,4] } )
Note that the :title is not necessary. If multiple data sets are added to the graph, the pie chart will display the sums of the data. EG:
graph.add_data( { :data => [1,2,3,4] } )
graph.add_data( { :data => [2,3,5,9] } )
is the same as:
graph.add_data( { :data => [3,5,8,13] } )
Defaults are those set by Graph::initialize, and