ChartDirector 7.0 (Python Edition)

Horizontal Bar Meter




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

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

Source Code Listing

pythondemo\hbarmeter.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 = 75.35 # Create an LinearMeter object of size 260 x 66 pixels with a very light grey (0xeeeeee) background, # and a rounded 3-pixel thick light grey (0xaaaaaa) border m = LinearMeter(260, 66, 0xeeeeee, 0xaaaaaa) m.setRoundedFrame(Transparent) m.setThickFrame(3) # Set the scale region top-left corner at (18, 24), with size of 222 x 20 pixels. The scale labels # are located on the top (implies horizontal meter) m.setMeter(18, 24, 222, 20, Top) # 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 y = 48 (below the meter scale) smoothColorScale = [0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xffff00, 100, 0xff0000] m.addColorScale(smoothColorScale, 48, 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, Top), 4) # Output the chart m.makeChart("hbarmeter.png")