ChartDirector 6.0 (Ruby Edition)
Pareto Chart
Source Code Listing
require("chartdirector") class ParetoController < ApplicationController def index() @title = "Pareto 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 chart data = [40, 15, 7, 5, 2] # The labels for the chart labels = ["Hard Disk", "PCB", "Printer", "CDROM", "Keyboard"] # In the pareto chart, the line data are just the accumulation of the raw data, scaled to a # range of 0 - 100% lineData = ChartDirector::ArrayMath.new(data) lineData.acc() scaleFactor = lineData.max() / 100 if scaleFactor == 0 # Avoid division by zero error for zero data scaleFactor = 1 end lineData.div2(scaleFactor) # Create a XYChart object of size 480 x 300 pixels. Set background color to brushed silver, # with a grey (bbbbbb) border and 2 pixel 3D raised effect. Use rounded corners. Enable soft # drop shadow. c = ChartDirector::XYChart.new(400, 300, ChartDirector::brushedSilverColor(), 0xbbbbbb, 2) c.setRoundedFrame() c.setDropShadow() # Add a title to the chart using 15 points Arial Italic. Set top/bottom margins to 12 # pixels. title = c.addTitle("Pareto Chart Demonstration", "ariali.ttf", 15) title.setMargin2(0, 0, 12, 12) # Tentatively set the plotarea at (50, 40). Set the width to 100 pixels less than the chart # width, and the height to 80 pixels less than the chart height. Use pale grey (f4f4f4) # background, transparent border, and dark grey (444444) dotted grid lines. c.setPlotArea(50, 40, c.getWidth() - 100, c.getHeight() - 80, 0xf4f4f4, -1, ChartDirector::Transparent, c.dashLineColor(0x444444, ChartDirector::DotLine)) # Add a line layer for the pareto line lineLayer = c.addLineLayer2() # Add the pareto line using deep blue (0000ff) as the color, with circle symbols lineLayer.addDataSet(lineData.result(), 0x0000ff).setDataSymbol(ChartDirector::CircleShape, 9, 0x0000ff, 0x0000ff) # Set the line width to 2 pixel lineLayer.setLineWidth(2) # Bind the line layer to the secondary (right) y-axis. lineLayer.setUseYAxis2() # Add a multi-color bar layer using the given data. barLayer = c.addBarLayer3(data) # Set soft lighting for the bars with light direction from the right barLayer.setBorderColor(ChartDirector::Transparent, ChartDirector::softLighting( ChartDirector::Right)) # Set the labels on the x axis. c.xAxis().setLabels(labels) # Set the secondary (right) y-axis scale as 0 - 100 with a tick every 20 units c.yAxis2().setLinearScale(0, 100, 20) # Set the format of the secondary (right) y-axis label to include a percentage sign c.yAxis2().setLabelFormat("{value}%") # Set the relationship between the two y-axes, which only differ by a scaling factor c.yAxis().syncAxis(c.yAxis2(), scaleFactor) # Set the format of the primary y-axis label foramt to show no decimal point c.yAxis().setLabelFormat("{value|0}") # Add a title to the primary y-axis c.yAxis().setTitle("Frequency") # Set all axes to transparent c.xAxis().setColors(ChartDirector::Transparent) c.yAxis().setColors(ChartDirector::Transparent) c.yAxis2().setColors(ChartDirector::Transparent) # Adjust the plot area size, such that the bounding box (inclusive of axes) is 10 pixels # from the left edge, just below the title, 10 pixels from the right edge, and 20 pixels # from the bottom edge. c.packPlotArea(10, title.getHeight(), c.getWidth() - 10, c.getHeight() - 20) # Output the chart send_data(c.makeChart2(ChartDirector::JPG), :type => "image/jpeg", :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 chart data = [40, 15, 7, 5, 2] # The labels for the chart labels = ["Hard Disk", "PCB", "Printer", "CDROM", "Keyboard"] # In the pareto chart, the line data are just the accumulation of the raw data, scaled to a range of # 0 - 100% lineData = ChartDirector::ArrayMath.new(data) lineData.acc() scaleFactor = lineData.max() / 100 if scaleFactor == 0 # Avoid division by zero error for zero data scaleFactor = 1 end lineData.div2(scaleFactor) # Create a XYChart object of size 480 x 300 pixels. Set background color to brushed silver, with a # grey (bbbbbb) border and 2 pixel 3D raised effect. Use rounded corners. Enable soft drop shadow. c = ChartDirector::XYChart.new(400, 300, ChartDirector::brushedSilverColor(), 0xbbbbbb, 2) c.setRoundedFrame() c.setDropShadow() # Add a title to the chart using 15 points Arial Italic. Set top/bottom margins to 12 pixels. title = c.addTitle("Pareto Chart Demonstration", "ariali.ttf", 15) title.setMargin2(0, 0, 12, 12) # Tentatively set the plotarea at (50, 40). Set the width to 100 pixels less than the chart width, # and the height to 80 pixels less than the chart height. Use pale grey (f4f4f4) background, # transparent border, and dark grey (444444) dotted grid lines. c.setPlotArea(50, 40, c.getWidth() - 100, c.getHeight() - 80, 0xf4f4f4, -1, ChartDirector::Transparent, c.dashLineColor(0x444444, ChartDirector::DotLine)) # Add a line layer for the pareto line lineLayer = c.addLineLayer2() # Add the pareto line using deep blue (0000ff) as the color, with circle symbols lineLayer.addDataSet(lineData.result(), 0x0000ff).setDataSymbol(ChartDirector::CircleShape, 9, 0x0000ff, 0x0000ff) # Set the line width to 2 pixel lineLayer.setLineWidth(2) # Bind the line layer to the secondary (right) y-axis. lineLayer.setUseYAxis2() # Add a multi-color bar layer using the given data. barLayer = c.addBarLayer3(data) # Set soft lighting for the bars with light direction from the right barLayer.setBorderColor(ChartDirector::Transparent, ChartDirector::softLighting(ChartDirector::Right )) # Set the labels on the x axis. c.xAxis().setLabels(labels) # Set the secondary (right) y-axis scale as 0 - 100 with a tick every 20 units c.yAxis2().setLinearScale(0, 100, 20) # Set the format of the secondary (right) y-axis label to include a percentage sign c.yAxis2().setLabelFormat("{value}%") # Set the relationship between the two y-axes, which only differ by a scaling factor c.yAxis().syncAxis(c.yAxis2(), scaleFactor) # Set the format of the primary y-axis label foramt to show no decimal point c.yAxis().setLabelFormat("{value|0}") # Add a title to the primary y-axis c.yAxis().setTitle("Frequency") # Set all axes to transparent c.xAxis().setColors(ChartDirector::Transparent) c.yAxis().setColors(ChartDirector::Transparent) c.yAxis2().setColors(ChartDirector::Transparent) # Adjust the plot area size, such that the bounding box (inclusive of axes) is 10 pixels from the # left edge, just below the title, 10 pixels from the right edge, and 20 pixels from the bottom # edge. c.packPlotArea(10, title.getHeight(), c.getWidth() - 10, c.getHeight() - 20) # Output the chart c.makeChart("pareto.jpg") |