This example demonstrates how to modify the coloring scheme using
BaseChart.setColor,
BaseChart.setColors and
BaseChart.setColors2, and apply a background image to the chart using
BaseChart.setWallpaper.
[File: pythondemo/colorpie.py] (The CGI version is available as "pythondemo_cgi/colorpie.py".)
#!/usr/bin/python
from pychartdir import *
def createChart(img) :
#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"]
#Colors of the sectors if custom coloring is used
colors = [0xb8bc9c, 0xecf0b9, 0x999966, 0x333366, 0xc3c3e6, 0x594330,
0xa0bdc4]
#Create a PieChart object of size 280 x 240 pixels
c = PieChart(280, 240)
#Set the center of the pie at (140, 120) and the radius to 80 pixels
c.setPieSize(140, 120, 80)
#Draw the pie in 3D
c.set3D()
#Set the coloring schema
if img == "0" :
c.addTitle("Custom Colors")
#set the LineColor to light gray
c.setColor(LineColor, 0xc0c0c0)
#use given color array as the data colors (sector colors)
c.setColors2(DataColor, colors)
elif img == "1" :
c.addTitle("Dark Background Colors")
#use the standard white on black palette
c.setColors(whiteOnBlackPalette)
elif img == "2" :
c.addTitle("Wallpaper As Background")
c.setWallpaper("bg.png")
else :
c.addTitle("Transparent Colors")
c.setWallpaper("bg.png")
#use semi-transparent colors to allow the background to be seen
c.setColors(transparentPalette)
#Set the pie data and the pie labels
c.setData(data, labels)
#Explode the 1st sector (index = 0)
c.setExplode(0)
#output the chart
c.makeChart("colorpie%s.png" % img)
createChart("0")
createChart("1")
createChart("2")
createChart("3")
|
© 2003 Advanced Software Engineering Limited. All rights reserved.