Depth Area Chart

[Ruby On Rails Version - Controller] app/controllers/deptharea_controller.rb

require("chartdirector")

class DepthareaController < ApplicationController

    def index()
        @title = "Depth Area 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 area chart
        data0 = [42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34, 51, 56, 56, 60, 70, 76, 63,
            67, 75, 64, 51]
        data1 = [50, 55, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67, 58, 59, 73, 77, 84,
            82, 80, 84, 89]
        data2 = [87, 89, 85, 66, 53, 39, 24, 21, 37, 56, 37, 22, 21, 33, 13, 17, 4, 23, 16, 25, 9,
            10, 5, 7, 6]
        labels = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14",
            "15", "16", "17", "18", "19", "20", "21", "22", "23", "24"]

        # Create a XYChart object of size 350 x 230 pixels
        c = ChartDirector::XYChart.new(350, 230)

        # Set the plotarea at (50, 30) and of size 250 x 150 pixels.
        c.setPlotArea(50, 30, 250, 150)

        # Add a legend box at (55, 0) (top of the chart) using 8pt Arial Font. Set background and
        # border to Transparent.
        c.addLegend(55, 0, false, "", 8).setBackground(ChartDirector::Transparent)

        # Add a title to the x axis
        c.xAxis().setTitle("Network Load for Jun 12")

        # Add a title to the y axis
        c.yAxis().setTitle("MBytes")

        # Set the labels on the x axis.
        c.xAxis().setLabels(labels)

        # Display 1 out of 2 labels on the x-axis. Show minor ticks for remaining labels.
        c.xAxis().setLabelStep(2, 1)

        # Add three area layers, each representing one data set. The areas are drawn in
        # semi-transparent colors.
        c.addAreaLayer(data2, 0x808080ff, "Server #1", 3)
        c.addAreaLayer(data0, 0x80ff0000, "Server #2", 3)
        c.addAreaLayer(data1, 0x8000ff00, "Server #3", 3)

        # Output the chart
        send_data(c.makeChart2(ChartDirector::PNG), :type => "image/png", :disposition => "inline")

    end

end

[Ruby On Rails Version - View] app/views/templates/chartview.html.erb

<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>

[Command Line Version] rubydemo/deptharea.rb

#!/usr/bin/env ruby
require("chartdirector")

# The data for the area chart
data0 = [42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34, 51, 56, 56, 60, 70, 76, 63, 67, 75,
    64, 51]
data1 = [50, 55, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67, 58, 59, 73, 77, 84, 82, 80,
    84, 89]
data2 = [87, 89, 85, 66, 53, 39, 24, 21, 37, 56, 37, 22, 21, 33, 13, 17, 4, 23, 16, 25, 9, 10, 5, 7,
    6]
labels = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15",
    "16", "17", "18", "19", "20", "21", "22", "23", "24"]

# Create a XYChart object of size 350 x 230 pixels
c = ChartDirector::XYChart.new(350, 230)

# Set the plotarea at (50, 30) and of size 250 x 150 pixels.
c.setPlotArea(50, 30, 250, 150)

# Add a legend box at (55, 0) (top of the chart) using 8pt Arial Font. Set background and border to
# Transparent.
c.addLegend(55, 0, false, "", 8).setBackground(ChartDirector::Transparent)

# Add a title to the x axis
c.xAxis().setTitle("Network Load for Jun 12")

# Add a title to the y axis
c.yAxis().setTitle("MBytes")

# Set the labels on the x axis.
c.xAxis().setLabels(labels)

# Display 1 out of 2 labels on the x-axis. Show minor ticks for remaining labels.
c.xAxis().setLabelStep(2, 1)

# Add three area layers, each representing one data set. The areas are drawn in semi-transparent
# colors.
c.addAreaLayer(data2, 0x808080ff, "Server #1", 3)
c.addAreaLayer(data0, 0x80ff0000, "Server #2", 3)
c.addAreaLayer(data1, 0x8000ff00, "Server #3", 3)

# Output the chart
c.makeChart("deptharea.png")