Pie Chart with Legend (1)

This example demonstrates how to add a legend box to a pie chart. It also demonstrates alternative sector label format and rounded edge sector shading.

Add a legend box using BaseChart.addLegend.
Change the sector label format using PieChart.setLabelFormat.
Set rounded edge sector shading using PieChart.setSectorStyle.

pythondemo\legendpie.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 = [25, 18, 15, 12, 8, 30, 35]

# The labels for the pie chart
labels = ["Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities", "Production"]

# Create a PieChart object of size 450 x 270 pixels
c = PieChart(450, 270)

# Set the center of the pie at (150, 100) and the radius to 80 pixels
c.setPieSize(150, 135, 100)

# add a legend box where the top left corner is at (330, 50)
c.addLegend(330, 60)

# modify the sector label format to show percentages only
c.setLabelFormat("{percent}%")

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

# Use rounded edge shading, with a 1 pixel white (FFFFFF) border
c.setSectorStyle(RoundedEdgeShading, 0xffffff, 1)

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