ChartDirector 6.0 (Ruby Edition)
V-Linear Meter Orientation
Source Code Listing
require("chartdirector") class VlinearmeterorientationController < ApplicationController def index() @title = "V-Linear Meter Orientation" @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 value to display on the meter value = 75.35 # Create a LinearMeter object of size 70 x 240 pixels with very light grey (0xeeeeee) # backgruond and a light grey (0xccccccc) 3-pixel thick rounded frame m = ChartDirector::LinearMeter.new(70, 240, 0xeeeeee, 0xcccccc) m.setRoundedFrame(ChartDirector::Transparent) m.setThickFrame(3) # This example demonstrates putting the text labels at the left or right side by setting the # label alignment and scale position. if chartIndex == 0 m.setMeter(28, 18, 20, 205, ChartDirector::Left) else m.setMeter(20, 18, 20, 205, ChartDirector::Right) end # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Add a smooth color scale to the meter smoothColorScale = [0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000] m.addColorScale(smoothColorScale) # Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc) # Output the chart send_data(m.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 value to display on the meter value = 75.35 # Create a LinearMeter object of size 70 x 240 pixels with very light grey (0xeeeeee) backgruond # and a light grey (0xccccccc) 3-pixel thick rounded frame m = ChartDirector::LinearMeter.new(70, 240, 0xeeeeee, 0xcccccc) m.setRoundedFrame(ChartDirector::Transparent) m.setThickFrame(3) # This example demonstrates putting the text labels at the left or right side by setting the # label alignment and scale position. if chartIndex == 0 m.setMeter(28, 18, 20, 205, ChartDirector::Left) else m.setMeter(20, 18, 20, 205, ChartDirector::Right) end # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Add a smooth color scale to the meter smoothColorScale = [0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000] m.addColorScale(smoothColorScale) # Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc) # Output the chart m.makeChart("vlinearmeterorientation%s.png" % chartIndex) end createChart(0) createChart(1) |