Donut Width

pythondemo\donutwidth.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 *

def createChart(chartIndex) :

    # Determine the donut inner radius (as percentage of outer radius) based on input parameter
    donutRadius = chartIndex * 25

    # The data for the pie chart
    data = [10, 10, 10, 10, 10]

    # The labels for the pie chart
    labels = ["Marble", "Wood", "Granite", "Plastic", "Metal"]

    # Create a PieChart object of size 150 x 120 pixels, with a grey (EEEEEE) background, black
    # border and 1 pixel 3D border effect
    c = PieChart(150, 120, 0xeeeeee, 0x000000, 1)

    # Set donut center at (75, 65) and the outer radius to 50 pixels. Inner radius is computed
    # according donutWidth
    c.setDonutSize(75, 60, 50, int(50 * donutRadius / 100))

    # Add a title to show the donut width
    c.addTitle("Inner Radius = %s %%" % (donutRadius), "Arial", 10).setBackground(0xcccccc, 0)

    # Draw the pie in 3D
    c.set3D(12)

    # Set the pie data and the pie labels
    c.setData(data, labels)

    # Disable the sector labels by setting the color to Transparent
    c.setLabelStyle("", 8, Transparent)

    # Output the chart
    c.makeChart("donutwidth%s.png" % chartIndex)


createChart(0)
createChart(1)
createChart(2)
createChart(3)
createChart(4)