ChartDirector 5.1 (Python Edition)

Simple Area Chart




This example demonstrates the basic steps in creating area charts.

Source Code Listing

[Standalone Version] pythondemo\simplearea.py
#!/usr/bin/python
from pychartdir import *

# The data for the area chart
data = [30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 89, 60, 55, 53, 35, 50,
    66, 56, 48, 52, 65, 62]

# The labels for the area chart
labels = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13",
    "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24"]

# Create a XYChart object of size 250 x 250 pixels
c = XYChart(250, 250)

# Set the plotarea at (30, 20) and of size 200 x 200 pixels
c.setPlotArea(30, 20, 200, 200)

# Add an area chart layer using the given data
c.addAreaLayer(data)

# Set the labels on the x axis.
c.xAxis().setLabels(labels)

# Display 1 out of 3 labels on the x-axis.
c.xAxis().setLabelStep(3)

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

[CGI Version] pythondemo_cgi\simplearea.py
#!/usr/bin/python
from pychartdir import *

# The data for the area chart
data = [30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 89, 60, 55, 53, 35, 50,
    66, 56, 48, 52, 65, 62]

# The labels for the area chart
labels = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13",
    "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24"]

# Create a XYChart object of size 250 x 250 pixels
c = XYChart(250, 250)

# Set the plotarea at (30, 20) and of size 200 x 200 pixels
c.setPlotArea(30, 20, 200, 200)

# Add an area chart layer using the given data
c.addAreaLayer(data)

# Set the labels on the x axis.
c.xAxis().setLabels(labels)

# Display 1 out of 3 labels on the x-axis.
c.xAxis().setLabelStep(3)

# Output the chart
print("Content-type: image/png\n")
binaryPrint(c.makeChart2(PNG))