Spline Line Chart

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

require("chartdirector")

class SplinelineController < ApplicationController

    def index()
        @title = "Spline Line 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
        data0 = [32, 39, 23, 28, 41, 38, 26, 35, 29]
        data1 = [50, 55, 47, 34, 47, 53, 38, 40, 51]

        # The labels for the chart
        labels = ["0", "1", "2", "3", "4", "5", "6", "7", "8"]

        # Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd) background,
        # black border, 1 pixel 3D border effect and rounded corners.
        c = ChartDirector::XYChart.new(600, 300, 0xffdddd, 0x000000, 1)
        c.setRoundedFrame()

        # Set directory for loading images to current script directory
        c.setSearchPath(File.dirname(__FILE__))

        # Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff) background.
        # Set horizontal and vertical grid lines to grey (cccccc).
        c.setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc)

        # Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial Bold
        # font. Set the background and border color to Transparent.
        c.addLegend(55, 32, false, "arialbd.ttf", 9).setBackground(ChartDirector::Transparent)

        # Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML and
        # includes embedded images for highlight. The text is white (ffffff) on a dark red (880000)
        # background, with soft lighting effect from the right side.
        c.addTitle(
            "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " \
            "<*img=star.png*><*img=star.png*><*/*>", "timesbi.ttf", 15, 0xffffff).setBackground(
            0x880000, -1, ChartDirector::softLighting(ChartDirector::Right))

        # Add a title to the y axis
        c.yAxis().setTitle("Energy Concentration (KJ per liter)")

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

        # Add a title to the x axis using CMDL
        c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>")

        # Set the axes width to 2 pixels
        c.xAxis().setWidth(2)
        c.yAxis().setWidth(2)

        # Add a spline layer to the chart
        layer = c.addSplineLayer()

        # Set the default line width to 2 pixels
        layer.setLineWidth(2)

        # Add a data set to the spline layer, using blue (0000c0) as the line color, with yellow
        # (ffff00) circle symbols.
        layer.addDataSet(data1, 0x0000c0, "Target Group").setDataSymbol(ChartDirector::CircleSymbol,
            9, 0xffff00)

        # Add a data set to the spline layer, using brown (982810) as the line color, with pink
        # (f040f0) diamond symbols.
        layer.addDataSet(data0, 0x982810, "Control Group").setDataSymbol(
            ChartDirector::DiamondSymbol, 11, 0xf040f0)

        # Add a custom CDML text at the bottom right of the plot area as the logo
        c.addText(575, 250,
            "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*>" \
            "<*font=timesbi.ttf,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(
            ChartDirector::BottomRight)

        # 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/splineline.rb

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

# The data for the chart
data0 = [32, 39, 23, 28, 41, 38, 26, 35, 29]
data1 = [50, 55, 47, 34, 47, 53, 38, 40, 51]

# The labels for the chart
labels = ["0", "1", "2", "3", "4", "5", "6", "7", "8"]

# Create a XYChart object of size 600 x 300 pixels, with a pale red (ffdddd) background, black
# border, 1 pixel 3D border effect and rounded corners.
c = ChartDirector::XYChart.new(600, 300, 0xffdddd, 0x000000, 1)
c.setRoundedFrame()

# Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white (ffffff) background. Set
# horizontal and vertical grid lines to grey (cccccc).
c.setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc)

# Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9pt Arial Bold font.
# Set the background and border color to Transparent.
c.addLegend(55, 32, false, "arialbd.ttf", 9).setBackground(ChartDirector::Transparent)

# Add a title box to the chart using 15pt Times Bold Italic font. The title is in CDML and includes
# embedded images for highlight. The text is white (ffffff) on a dark red (880000) background, with
# soft lighting effect from the right side.
c.addTitle(
    "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance Enhancer " \
    "<*img=star.png*><*img=star.png*><*/*>", "timesbi.ttf", 15, 0xffffff).setBackground(0x880000,
    -1, ChartDirector::softLighting(ChartDirector::Right))

# Add a title to the y axis
c.yAxis().setTitle("Energy Concentration (KJ per liter)")

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

# Add a title to the x axis using CMDL
c.xAxis().setTitle("<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>")

# Set the axes width to 2 pixels
c.xAxis().setWidth(2)
c.yAxis().setWidth(2)

# Add a spline layer to the chart
layer = c.addSplineLayer()

# Set the default line width to 2 pixels
layer.setLineWidth(2)

# Add a data set to the spline layer, using blue (0000c0) as the line color, with yellow (ffff00)
# circle symbols.
layer.addDataSet(data1, 0x0000c0, "Target Group").setDataSymbol(ChartDirector::CircleSymbol, 9,
    0xffff00)

# Add a data set to the spline layer, using brown (982810) as the line color, with pink (f040f0)
# diamond symbols.
layer.addDataSet(data0, 0x982810, "Control Group").setDataSymbol(ChartDirector::DiamondSymbol, 11,
    0xf040f0)

# Add a custom CDML text at the bottom right of the plot area as the logo
c.addText(575, 250,
    "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*>" \
    "<*font=timesbi.ttf,size=10,color=804040*>Molecular\nEngineering<*/*>").setAlignment(
    ChartDirector::BottomRight)

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