This example demonstrates a horizontal linear meter with multiple pointers.
This example demonstrates a horizontal linear meter with multiple pointers.
ChartDirector 7.0 (Python Edition)
Multi-Pointer Horizontal Meter
Source Code Listing
#!/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")