ChartDirector Ver 5.0 (Python Edition)

Cylinder Bar Shading




This example demonstrates using cylinder shading effect for bars. It also demonstrates brushed metal background, rounded frame, and axis labels on both sides of the plot area.

Source Code Listing

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

# The data for the bar chart
data = [450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700]

# The labels for the bar chart
labels = ["1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004",
    "2005"]

# Create a XYChart object of size 600 x 380 pixels. Set background color to brushed
# silver, with a 2 pixel 3D border. Use rounded corners of 20 pixels radius.
c = XYChart(600, 380, brushedSilverColor(), Transparent, 2)

# Add a title to the chart using 18pts Times Bold Italic font. Set top/bottom margins
# to 8 pixels.
c.addTitle("Annual Revenue for Star Tech", "timesbi.ttf", 18).setMargin2(0, 0, 8, 8)

# Set the plotarea at (70, 55) and of size 460 x 280 pixels. Use transparent border
# and black grid lines. Use rounded frame with radius of 20 pixels.
c.setPlotArea(70, 55, 460, 280, -1, -1, Transparent, '0x000000')
c.setRoundedFrame('0xffffff', 20)

# Add a multi-color bar chart layer using the supplied data. Set cylinder bar shape.
c.addBarLayer3(data).setBarShape(CircleShape)

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

# Show the same scale on the left and right y-axes
c.syncYAxis()

# Set the left y-axis and right y-axis title using 10pt Arial Bold font
c.yAxis().setTitle("USD (millions)", "arialbd.ttf", 10)
c.yAxis2().setTitle("USD (millions)", "arialbd.ttf", 10)

# Set y-axes to transparent
c.yAxis().setColors(Transparent)
c.yAxis2().setColors(Transparent)

# Disable ticks on the x-axis by setting the tick color to transparent
c.xAxis().setTickColor(Transparent)

# Set the label styles of all axes to 8pt Arial Bold font
c.xAxis().setLabelStyle("arialbd.ttf", 8)
c.yAxis().setLabelStyle("arialbd.ttf", 8)
c.yAxis2().setLabelStyle("arialbd.ttf", 8)

# Output the chart
c.makeChart("cylinderlightbar.jpg")

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

# The data for the bar chart
data = [450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700]

# The labels for the bar chart
labels = ["1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004",
    "2005"]

# Create a XYChart object of size 600 x 380 pixels. Set background color to brushed
# silver, with a 2 pixel 3D border. Use rounded corners of 20 pixels radius.
c = XYChart(600, 380, brushedSilverColor(), Transparent, 2)

# Add a title to the chart using 18pts Times Bold Italic font. Set top/bottom margins
# to 8 pixels.
c.addTitle("Annual Revenue for Star Tech", "timesbi.ttf", 18).setMargin2(0, 0, 8, 8)

# Set the plotarea at (70, 55) and of size 460 x 280 pixels. Use transparent border
# and black grid lines. Use rounded frame with radius of 20 pixels.
c.setPlotArea(70, 55, 460, 280, -1, -1, Transparent, '0x000000')
c.setRoundedFrame('0xffffff', 20)

# Add a multi-color bar chart layer using the supplied data. Set cylinder bar shape.
c.addBarLayer3(data).setBarShape(CircleShape)

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

# Show the same scale on the left and right y-axes
c.syncYAxis()

# Set the left y-axis and right y-axis title using 10pt Arial Bold font
c.yAxis().setTitle("USD (millions)", "arialbd.ttf", 10)
c.yAxis2().setTitle("USD (millions)", "arialbd.ttf", 10)

# Set y-axes to transparent
c.yAxis().setColors(Transparent)
c.yAxis2().setColors(Transparent)

# Disable ticks on the x-axis by setting the tick color to transparent
c.xAxis().setTickColor(Transparent)

# Set the label styles of all axes to 8pt Arial Bold font
c.xAxis().setLabelStyle("arialbd.ttf", 8)
c.yAxis().setLabelStyle("arialbd.ttf", 8)
c.yAxis2().setLabelStyle("arialbd.ttf", 8)

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