ChartDirector 7.0 (Python Edition)

Horizontal Linear Meter




This example demonstrates the basic steps in creating a horizontal linear meter.

A horizontal linear meter can be created using the following steps:

Source Code Listing

pythondemo\hlinearmeter.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 value to display on the meter value = 74.25 # Create an LinearMeter object of size 250 x 65 pixels with a very light grey (0xeeeeee) background, # and a rounded 3-pixel thick light grey (0xcccccc) border m = LinearMeter(250, 65, 0xeeeeee, 0xcccccc) m.setRoundedFrame(Transparent) m.setThickFrame(3) # Set the scale region top-left corner at (14, 23), with size of 218 x 20 pixels. The scale labels # are located on the top (implies horizontal meter) m.setMeter(14, 23, 218, 20, Top) # Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10) # Add a smooth color scale to the meter smoothColorScale = [0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000] m.addColorScale(smoothColorScale) # Add a blue (0x0000cc) pointer at the specified value m.addPointer(value, 0x0000cc) # Output the chart m.makeChart("hlinearmeter.png")