ChartDirector 7.0 (Python Edition)

Multi-Pointer Vertical Meter




This example demonstrates a vertical linear meter with multiple pointers.

Source Code Listing

pythondemo\multivmeter.py
#!/usr/bin/python # The ChartDirector for Python module is assumed to be in "../lib" import sys, os sys.path.insert(0, os.path.join(os.path.abspath(sys.path[0]), "..", "lib")) from pychartdir import * # The values to display on the meter value0 = 30.99 value1 = 45.35 value2 = 77.64 # Create an LinearMeter object of size 60 x 245 pixels, using silver background with a 2 pixel black # 3D depressed border. m = LinearMeter(60, 245, silverColor(), 0, -2) # Set the scale region top-left corner at (25, 30), with size of 20 x 200 pixels. The scale labels # are located on the left (default - implies vertical meter) m.setMeter(25, 30, 20, 200) # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Set 0 - 50 as green (99ff99) zone, 50 - 80 as yellow (ffff66) zone, and 80 - 100 as red (ffcccc) # zone m.addZone(0, 50, 0x99ff99) m.addZone(50, 80, 0xffff66) m.addZone(80, 100, 0xffcccc) # Add deep red (000080), deep green (008000) and deep blue (800000) pointers to reflect the values m.addPointer(value0, 0x000080) m.addPointer(value1, 0x008000) m.addPointer(value2, 0x800000) # Add a text box label at top-center (30, 5) using Arial Bold/8pt/deep blue (000088), with a light # blue (9999ff) background m.addText(30, 5, "Temp C", "Arial Bold", 8, 0x000088, TopCenter).setBackground(0x9999ff) # Output the chart m.makeChart("multivmeter.png")