ChartDirector 7.0 (Python Edition)

Icon Pie Chart (1)




This example demonstrates using CDML and Parameter Substitution and Formatting to include icons in sector labels. It also demonstrates gradient background color, glass shading effect for the title and rounded corners for the chart frame.

Source Code Listing

pythondemo\iconpie.py
#!/usr/bin/python # The ChartDirector for Python module is assumed to be in "../lib" import sys, os sys.path.insert(0, os.path.join(os.path.abspath(sys.path[0]), "..", "lib")) from pychartdir import * # The data for the pie chart data = [72, 18, 15, 12] # The depths for the sectors depths = [30, 20, 10, 10] # The labels for the pie chart labels = ["Sunny", "Cloudy", "Rainy", "Snowy"] # The icons for the sectors icons = ["sun.png", "cloud.png", "rain.png", "snowy.png"] # Create a PieChart object of size 400 x 310 pixels, with a blue (CCCCFF) vertical metal gradient # background, black border, 1 pixel 3D border effect and rounded corners c = PieChart(400, 310, metalColor(0xccccff, 0), 0x000000, 1) c.setRoundedFrame() # Set the center of the pie at (200, 180) and the radius to 100 pixels c.setPieSize(200, 180, 100) # Add a title box using 15pt Times Bold Italic font, on a blue (CCCCFF) background with glass effect c.addTitle("Weather Profile in Wonderland", "Times New Roman Bold Italic", 15).setBackground( 0xccccff, 0x000000, glassEffect()) # Set the pie data and the pie labels c.setData(data, labels) # Add icons to the chart as a custom field c.addExtraField(icons) # Configure the sector labels using CDML to include the icon images c.setLabelFormat("<*block,valign=absmiddle*><*img={field0}*> <*block*>{label}\n{percent}%<*/*><*/*>" ) # Draw the pie in 3D with variable 3D depths c.set3D2(depths) # Set the start angle to 225 degrees may improve layout when the depths of the sector are sorted in # descending order, because it ensures the tallest sector is at the back. c.setStartAngle(225) # Output the chart c.makeChart("iconpie.png")