require("chartdirector")
class Symbolline2Controller < ApplicationController
def index()
@title = "Symbol Line Chart (2)"
@ctrl_file = File.expand_path(__FILE__)
@noOfCharts = 1
render :template => "templates/chartview"
end
#
# Render and deliver the chart
#
def getchart()
# The data for the line chart
data0 = [42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42]
data1 = [65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78]
data2 = [36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24]
labels = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
]
# Create a XYChart object of size 600 x 375 pixels
c = ChartDirector::XYChart.new(600, 375)
# Add a title to the chart using 18pt Times Bold Italic font
c.addTitle("Product Line Global Revenue", "timesbi.ttf", 18)
# Set the plotarea at (50, 55) and of 500 x 280 pixels in size. Use a vertical gradient
# color from light blue (f9f9ff) to sky blue (aaccff) as background. Set border to
# transparent and grid lines to white (ffffff).
c.setPlotArea(50, 55, 500, 280, c.linearGradientColor(0, 55, 0, 335, 0xf9fcff, 0xaaccff),
-1, ChartDirector::Transparent, 0xffffff)
# Add a legend box at (50, 28) using horizontal layout. Use 10pt Arial Bold as font, with
# transparent background.
c.addLegend(50, 28, false, "arialbd.ttf", 10).setBackground(ChartDirector::Transparent)
# Set the x axis labels
c.xAxis().setLabels(labels)
# Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the
# guideline when putting ticks on the y-axis.
c.yAxis().setTickDensity(30)
# Set axis label style to 8pt Arial Bold
c.xAxis().setLabelStyle("arialbd.ttf", 8)
c.yAxis().setLabelStyle("arialbd.ttf", 8)
# Set axis line width to 2 pixels
c.xAxis().setWidth(2)
c.yAxis().setWidth(2)
# Add axis title using 10pt Arial Bold Italic font
c.yAxis().setTitle("Revenue in USD millions", "arialbi.ttf", 10)
# Add a line layer to the chart
layer = c.addLineLayer2()
# Set the line width to 3 pixels
layer.setLineWidth(3)
# Add the three data sets to the line layer, using circles, diamands and X shapes as symbols
layer.addDataSet(data0, 0xff0000, "Quantum Computer").setDataSymbol(
ChartDirector::CircleSymbol, 9)
layer.addDataSet(data1, 0x00ff00, "Atom Synthesizer").setDataSymbol(
ChartDirector::DiamondSymbol, 11)
layer.addDataSet(data2, 0xff6600, "Proton Cannon").setDataSymbol(ChartDirector::Cross2Shape(
), 11)
# Output the chart
send_data(c.makeChart2(ChartDirector::PNG), :type => "image/png", :disposition => "inline")
end
end |