#!/usr/bin/python
from pychartdir import *
import cgi, sys
# Get HTTP query parameters
query = cgi.FieldStorage()
# This script can draw different charts depending on the chartIndex
chartIndex = int(query["img"].value)
# The value to display on the meter
value = 75.35
# Create a LinearMeter object of size 70 x 240 pixels with very light grey (0xeeeeee) backgruond and
# a light grey (0xccccccc) 3-pixel thick rounded frame
m = LinearMeter(70, 240, 0xeeeeee, 0xcccccc)
m.setRoundedFrame(Transparent)
m.setThickFrame(3)
# This example demonstrates putting the text labels at the left or right side by setting the label
# alignment and scale position.
if chartIndex == 0 :
m.setMeter(28, 18, 20, 205, Left)
else :
m.setMeter(20, 18, 20, 205, Right)
# 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
print("Content-type: image/png\n")
binaryPrint(m.makeChart2(PNG)) |