A multi-color bar chart is a bar chart in which each bar has a different color. This example creates a multi-color bar chart and demonstrates the following ChartDirector features:
[File: pythondemo/colorbar.py] (The CGI version is available as "pythondemo_cgi/colorbar.py".)
#!/usr/bin/python
from pychartdir import *
#The data for the bar chart
data = [85, 156, 179.5, 211, 123]
#The labels for the bar chart
labels = ["Mon", "Tue", "Wed", "Thu", "Fri"]
#The colors for the bar chart
colors = [0xb8bc9c, 0xa0bdc4, 0x999966, 0x333366, 0xc3c3e6]
#Create a XYChart object of size 260 x 220 pixels
c = XYChart(260, 220)
#Set the background color of the chart to gold (goldGradient). Use a 2 pixel 3D
#border.
c.setBackground(c.gradientColor(goldGradient), -1, 2)
#Add a title box using 10 point Arial Bold font. Set the background color to
#blue metallic (blueMetalGradient). Use a 1 pixel 3D border.
c.addTitle("Daily Network Load", "arialbd.ttf", 10).setBackground(
c.gradientColor(blueMetalGradient), -1, 1)
#Set the plotarea at (40, 40) and of 200 x 150 pixels in size
c.setPlotArea(40, 40, 200, 150)
#Add a multi-color bar chart layer using the given data and colors. Use a 1
#pixel 3D border for the bars.
c.addBarLayer3(data, colors).setBorderColor(-1, 1)
#Set the x axis labels using the given labels
c.xAxis().setLabels(labels)
#output the chart
c.makeChart("colorbar.png")
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