ChartDirector 6.0 (Ruby Edition)
Circular Label Layout
Source Code Listing
require("chartdirector") class CirclelabelpieController < ApplicationController def index() @title = "Circular Label Layout" @ctrl_file = File.expand_path(__FILE__) @noOfCharts = 2 render :template => "templates/chartview" end # # Render and deliver the chart # def getchart() # This script can draw different charts depending on the chartIndex chartIndex = (params["img"]).to_i # The data for the pie chart data = [42, 18, 8] # The labels for the pie chart labels = ["Agree", "Disagree", "Not Sure"] # The colors to use for the sectors colors = [0x66ff66, 0xff6666, 0xffff00] # Create a PieChart object of size 300 x 300 pixels. Set the background to a gradient color # from blue (aaccff) to sky blue (ffffff), with a grey (888888) border. Use rounded corners # and soft drop shadow. c = ChartDirector::PieChart.new(300, 300) c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight() / 2, 0xaaccff, 0xffffff), 0x888888) c.setRoundedFrame() c.setDropShadow() if chartIndex == 0 #============================================================ # Draw a pie chart where the label is on top of the pie #============================================================ # Set the center of the pie at (150, 150) and the radius to 120 pixels c.setPieSize(150, 150, 120) # Set the label position to -40 pixels from the perimeter of the pie (-ve means label is # inside the pie) c.setLabelPos(-40) else #============================================================ # Draw a pie chart where the label is outside the pie #============================================================ # Set the center of the pie at (150, 150) and the radius to 80 pixels c.setPieSize(150, 150, 80) # Set the sector label position to be 20 pixels from the pie. Use a join line to connect # the labels to the sectors. c.setLabelPos(20, ChartDirector::LineColor) end # Set the pie data and the pie labels c.setData(data, labels) # Set the sector colors c.setColors2(ChartDirector::DataColor, colors) # Use local gradient shading, with a 1 pixel semi-transparent black (bb000000) border c.setSectorStyle(ChartDirector::LocalGradientShading, 0xbb000000, 1) # Output the chart send_data(c.makeChart2(ChartDirector::PNG), :type => "image/png", :disposition => "inline") end end |
<html> <body style="margin:5px 0px 0px 5px"> <!-- Title --> <div style="font-size:18pt; font-family:verdana; font-weight:bold"> <%= @title %> </div> <hr style="border:solid 1px #000080" /> <!-- Source Code Listing Link --> <div style="font-size:9pt; font-family:verdana; margin-bottom:1.5em"> <%= link_to "Source Code Listing", :controller => "cddemo", :action => "viewsource", :ctrl_file => @ctrl_file, :view_file => File.expand_path(__FILE__) %> </div> <!-- Create one or more IMG tags to display the demo chart(s) --> <% 0.upto(@noOfCharts - 1) do |i| %> <img src="<%= url_for(:action => "getchart", :img => i) %>"> <% end %> </body> </html> |
#!/usr/bin/env ruby require("chartdirector") def createChart(chartIndex) # The data for the pie chart data = [42, 18, 8] # The labels for the pie chart labels = ["Agree", "Disagree", "Not Sure"] # The colors to use for the sectors colors = [0x66ff66, 0xff6666, 0xffff00] # Create a PieChart object of size 300 x 300 pixels. Set the background to a gradient color from # blue (aaccff) to sky blue (ffffff), with a grey (888888) border. Use rounded corners and soft # drop shadow. c = ChartDirector::PieChart.new(300, 300) c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight() / 2, 0xaaccff, 0xffffff), 0x888888) c.setRoundedFrame() c.setDropShadow() if chartIndex == 0 #============================================================ # Draw a pie chart where the label is on top of the pie #============================================================ # Set the center of the pie at (150, 150) and the radius to 120 pixels c.setPieSize(150, 150, 120) # Set the label position to -40 pixels from the perimeter of the pie (-ve means label is # inside the pie) c.setLabelPos(-40) else #============================================================ # Draw a pie chart where the label is outside the pie #============================================================ # Set the center of the pie at (150, 150) and the radius to 80 pixels c.setPieSize(150, 150, 80) # Set the sector label position to be 20 pixels from the pie. Use a join line to connect the # labels to the sectors. c.setLabelPos(20, ChartDirector::LineColor) end # Set the pie data and the pie labels c.setData(data, labels) # Set the sector colors c.setColors2(ChartDirector::DataColor, colors) # Use local gradient shading, with a 1 pixel semi-transparent black (bb000000) border c.setSectorStyle(ChartDirector::LocalGradientShading, 0xbb000000, 1) # Output the chart c.makeChart("circlelabelpie%s.png" % chartIndex) end createChart(0) createChart(1) |