ChartDirector 6.0 (Python Edition)

Vertical Bar Meter




This example demonstrates the basic steps in creating a vertical bar meter.

A vertical bar meter can be created using the following steps:

Source Code Listing

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

# The value to display on the meter
value = 66.77

# Create an LinearMeter object of size 70 x 240 pixels with a very light grey (0xeeeeee) background,
# and a rounded 3-pixel thick light grey (0xbbbbbb) border
m = LinearMeter(70, 240, 0xeeeeee, 0xbbbbbb)
m.setRoundedFrame(Transparent)
m.setThickFrame(3)

# Set the scale region top-left corner at (28, 18), with size of 20 x 205 pixels. The scale labels
# are located on the left (default - implies vertical meter).
m.setMeter(28, 18, 20, 205)

# Set meter scale from 0 - 100, with a tick every 10 units
m.setScale(0, 100, 10)

# Add a 5-pixel thick smooth color scale to the meter at x = 54 (right of meter scale)
smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000]
m.addColorScale(smoothColorScale, 54, 5)

# Add a light blue (0x0088ff) bar from 0 to the data value with glass effect and 4 pixel rounded
# corners
m.addBar(0, value, 0x0088ff, glassEffect(NormalGlare, Left), 4)

# Output the chart
m.makeChart("vbarmeter.png")

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

# The value to display on the meter
value = 66.77

# Create an LinearMeter object of size 70 x 240 pixels with a very light grey (0xeeeeee) background,
# and a rounded 3-pixel thick light grey (0xbbbbbb) border
m = LinearMeter(70, 240, 0xeeeeee, 0xbbbbbb)
m.setRoundedFrame(Transparent)
m.setThickFrame(3)

# Set the scale region top-left corner at (28, 18), with size of 20 x 205 pixels. The scale labels
# are located on the left (default - implies vertical meter).
m.setMeter(28, 18, 20, 205)

# Set meter scale from 0 - 100, with a tick every 10 units
m.setScale(0, 100, 10)

# Add a 5-pixel thick smooth color scale to the meter at x = 54 (right of meter scale)
smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000]
m.addColorScale(smoothColorScale, 54, 5)

# Add a light blue (0x0088ff) bar from 0 to the data value with glass effect and 4 pixel rounded
# corners
m.addBar(0, value, 0x0088ff, glassEffect(NormalGlare, Left), 4)

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