require("chartdirector")
class LegendpieController < ApplicationController
def index()
@title = "Pie Chart with Legend"
@ctrl_file = File.expand_path(__FILE__)
@noOfCharts = 1
render :template => "templates/chartview"
end
#
# Render and deliver the chart
#
def getchart()
# The data for the pie chart
data = [25, 18, 15, 12, 8, 30, 35]
# The labels for the pie chart
labels = ["Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities",
"Production"]
# Create a PieChart object of size 450 x 240 pixels
c = ChartDirector::PieChart.new(450, 240)
# Set the center of the pie at (150, 100) and the radius to 80 pixels
c.setPieSize(150, 100, 80)
# Add a title at the bottom of the chart using Arial Bold Italic font
c.addTitle2(ChartDirector::Bottom, "Project Cost Breakdown", "arialbi.ttf")
# Draw the pie in 3D
c.set3D()
# add a legend box where the top left corner is at (330, 40)
c.addLegend(330, 40)
# modify the label format for the sectors to $nnnK (pp.pp%)
c.setLabelFormat("{label} ${value}K\n({percent}%)")
# Set the pie data and the pie labels
c.setData(data, labels)
# Explode the 1st sector (index = 0)
c.setExplode(0)
# output the chart
send_data(c.makeChart2(ChartDirector::PNG), :type => "image/png",
:disposition => "inline")
end
end |