ChartDirector 6.0 (Ruby Edition)
Log Scale Axis
Source Code Listing
require("chartdirector") class LogaxisController < ApplicationController def index() @title = "Log Scale Axis" @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 chart data = [100, 125, 260, 147, 67] labels = ["Mon", "Tue", "Wed", "Thu", "Fri"] # Create a XYChart object of size 200 x 180 pixels c = ChartDirector::XYChart.new(200, 180) # Set the plot area at (30, 10) and of size 140 x 130 pixels c.setPlotArea(30, 10, 140, 130) # Ise log scale axis if required if chartIndex == 1 c.yAxis().setLogScale3() end # Set the labels on the x axis c.xAxis().setLabels(labels) # Add a color bar layer using the given data. Use a 1 pixel 3D border for the bars. c.addBarLayer3(data).setBorderColor(-1, 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 chart data = [100, 125, 260, 147, 67] labels = ["Mon", "Tue", "Wed", "Thu", "Fri"] # Create a XYChart object of size 200 x 180 pixels c = ChartDirector::XYChart.new(200, 180) # Set the plot area at (30, 10) and of size 140 x 130 pixels c.setPlotArea(30, 10, 140, 130) # Ise log scale axis if required if chartIndex == 1 c.yAxis().setLogScale3() end # Set the labels on the x axis c.xAxis().setLabels(labels) # Add a color bar layer using the given data. Use a 1 pixel 3D border for the bars. c.addBarLayer3(data).setBorderColor(-1, 1) # Output the chart c.makeChart("logaxis%s.png" % chartIndex) end createChart(0) createChart(1) |