ChartDirector 7.0 (Python Edition)

Multi-Pointer Horizontal Meter




This example demonstrates a horizontal linear meter with multiple pointers.

Source Code Listing

pythondemo\multihmeter.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 250 x 75 pixels, using silver background with a 2 pixel black # 3D depressed border. m = LinearMeter(250, 75, silverColor(), 0, -2) # Set the scale region top-left corner at (15, 25), with size of 220 x 20 pixels. The scale labels # are located on the top (implies horizontal meter) m.setMeter(15, 25, 220, 20, Top) # 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 label at bottom-left (10, 68) using Arial Bold/8pt/red (c00000) m.addText(10, 68, "Temp C", "Arial Bold", 8, 0xc00000, BottomLeft) # Add three text boxes to show the values in this meter m.addText(148, 70, m.formatValue(value0, "2"), "Arial", 8, 0x6666ff, BottomRight).setBackground(0, 0, -1) m.addText(193, 70, m.formatValue(value1, "2"), "Arial", 8, 0x33ff33, BottomRight).setBackground(0, 0, -1) m.addText(238, 70, m.formatValue(value2, "2"), "Arial", 8, 0xff3333, BottomRight).setBackground(0, 0, -1) # Output the chart m.makeChart("multihmeter.png")