ChartDirector 6.0 (Ruby Edition)
Overlapping Bar Chart
Source Code Listing
require("chartdirector") class OverlapbarController < ApplicationController def index() @title = "Overlapping Bar Chart" @ctrl_file = File.expand_path(__FILE__) @noOfCharts = 1 render :template => "templates/chartview" end # # Render and deliver the chart # def getchart() # The data for the bar chart data0 = [100, 125, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122] data1 = [122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270] data2 = [167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310] labels = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"] # Create a XYChart object of size 580 x 280 pixels c = ChartDirector::XYChart.new(580, 280) # Add a title to the chart using 14pt Arial Bold Italic font c.addTitle("Product Revenue For Last 3 Years", "arialbi.ttf", 14) # Set the plot area at (50, 50) and of size 500 x 200. Use two alternative background colors # (f8f8f8 and ffffff) c.setPlotArea(50, 50, 500, 200, 0xf8f8f8, 0xffffff) # Add a legend box at (50, 25) using horizontal layout. Use 8pt Arial as font, with # transparent background. c.addLegend(50, 25, false, "arial.ttf", 8).setBackground(ChartDirector::Transparent) # Set the x axis labels c.xAxis().setLabels(labels) # Draw the ticks between label positions (instead of at label positions) c.xAxis().setTickOffset(0.5) # Add a multi-bar layer with 3 data sets layer = c.addBarLayer2(ChartDirector::Side) layer.addDataSet(data0, 0xff8080, "Year 2003") layer.addDataSet(data1, 0x80ff80, "Year 2004") layer.addDataSet(data2, 0x8080ff, "Year 2005") # Set 50% overlap between bars layer.setOverlapRatio(0.5) # Add a title to the y-axis c.yAxis().setTitle("Revenue (USD in millions)") # 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") # The data for the bar chart data0 = [100, 125, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122] data1 = [122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270] data2 = [167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310] labels = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct", "Nov", "Dec"] # Create a XYChart object of size 580 x 280 pixels c = ChartDirector::XYChart.new(580, 280) # Add a title to the chart using 14pt Arial Bold Italic font c.addTitle("Product Revenue For Last 3 Years", "arialbi.ttf", 14) # Set the plot area at (50, 50) and of size 500 x 200. Use two alternative background colors (f8f8f8 # and ffffff) c.setPlotArea(50, 50, 500, 200, 0xf8f8f8, 0xffffff) # Add a legend box at (50, 25) using horizontal layout. Use 8pt Arial as font, with transparent # background. c.addLegend(50, 25, false, "arial.ttf", 8).setBackground(ChartDirector::Transparent) # Set the x axis labels c.xAxis().setLabels(labels) # Draw the ticks between label positions (instead of at label positions) c.xAxis().setTickOffset(0.5) # Add a multi-bar layer with 3 data sets layer = c.addBarLayer2(ChartDirector::Side) layer.addDataSet(data0, 0xff8080, "Year 2003") layer.addDataSet(data1, 0x80ff80, "Year 2004") layer.addDataSet(data2, 0x8080ff, "Year 2005") # Set 50% overlap between bars layer.setOverlapRatio(0.5) # Add a title to the y-axis c.yAxis().setTitle("Revenue (USD in millions)") # Output the chart c.makeChart("overlapbar.png") |