Polar Spline Chart

pythondemo\polarspline.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 chart
data0 = [5.1, 2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5, 9.4, 1.8, 2.1, 2.3, 3.5, 7.7,
    8.8, 6.1, 5.0, 3.1, 6.0, 4.3]
angles0 = [0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270,
    285, 300, 315, 330, 345]

data1 = [8.1, 2.5, 5, 5.2, 6.5, 8.5, 9, 7.6, 8.7, 6.4, 5.5, 5.4, 3.0, 8.7, 7.1, 8.8, 7.9, 2.2, 5.0,
    4.0, 1.5, 7.5, 8.3, 9.0]
angles1 = [0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270,
    285, 300, 315, 330, 345]

# Create a PolarChart object of size 460 x 460 pixels
c = PolarChart(460, 460)

# Add a title to the chart at the top left corner using 15pt Arial Bold Italic font
c.addTitle2(TopLeft, "<*underline=2*>EM Field Strength", "Arial Bold Italic", 15)

# Set center of plot area at (230, 240) with radius 180 pixels
c.setPlotArea(230, 240, 180)

# Set the grid style to circular grid
c.setGridStyle(0)

# Add a legend box at the top right corner of the chart using 9pt Arial Bold font
c.addLegend(459, 0, 1, "Arial Bold", 9).setAlignment(TopRight)

# Set angular axis as 0 - 360, with a spoke every 30 units
c.angularAxis().setLinearScale(0, 360, 30)

# Add a red (0xff9999) spline area layer to the chart using (data0, angles0)
c.addSplineAreaLayer(data0, 0xff9999, "Above 100MHz").setAngles(angles0)

# Add a blue (0xff) spline line layer to the chart using (data1, angle1)
layer1 = c.addSplineLineLayer(data1, 0x0000ff, "Below 100MHz")
layer1.setAngles(angles1)

# Set the line width to 3 pixels
layer1.setLineWidth(3)

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