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require 'SVG/Graph/Bar'
x_axis = ['1-10', '10-30', '30-50', '50-70', 'older']
options = {
:width => 640,
:height => 500,
:stack => :side, # the stack option is valid for Bar graphs only
:fields => x_axis,
:graph_title => "kg per head and year chocolate consumption",
:show_graph_title => true,
:scale_integers => true,
:show_x_title => true,
:x_title => 'Age in years',
:stagger_x_labels => true,
:rotate_x_labels => true,
:x_title_location => :end,
:show_y_title => true,
:y_title => 'kg/year',
:y_title_location => :end,
:add_popups => true,
:no_css => true,
:show_percent => true,
:show_actual_values => true,
# :x_axis_position => 0,
# :y_axis_position => '30-50',
}
data1 = [15, 4, 6.7, 4, 2.8]
data2 = [1, 5, 4, 5, 12.7]
g = SVG::Graph::Bar.new(options)
g.add_data( {
:data => data1,
:title => "Dataset1"
})
g.add_data( {
:data => data2,
:title => "Dataset2"
})
# graph.burn # this returns a full valid xml document containing the graph
# graph.burn_svg_only # this only returns the <svg>...</svg> node
File.open(File.expand_path('bar.svg',__dir__), 'w') {|f| f.write(g.burn_svg_only)}
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