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#!/usr/bin/env python
# $Id: pyplotD.py,v 1.2 2007/03/15 14:55:38 pjetur Exp $
#
# Simple plotting of digital input data from the K8055 board
#
# based on the running plot sample from pyQwt
# The Python version of qwt-*/examples/data_plot/data_plot.cpp
import random, sys
from qt import *
from qwt import *
from Numeric import *
from pyk8055 import *
class DataPlot(QwtPlot):
def __init__(self, *args):
QwtPlot.__init__(self, *args)
# Initialize data
self.x = arrayrange(0.0, 100.1, 0.5)
self.d1 = 0.0 + zeros(len(self.x), Float)
self.d2 = 1.0 + zeros(len(self.x), Float) # shift data up 1
self.d3 = 2.0 + zeros(len(self.x), Float) # Shift data up 2...
self.d4 = 3.0 + zeros(len(self.x), Float)
self.d5 = 4.0 + zeros(len(self.x), Float)
self.setTitle("Simple K8055 datascope")
self.setAutoLegend(True)
self.curve1 = self.insertCurve("Input 1")
self.curve2 = self.insertCurve("Input 2")
self.curve3 = self.insertCurve("Input 3")
self.curve4 = self.insertCurve("Input 4")
self.curve5 = self.insertCurve("Input 5")
self.setCurvePen(self.curve1, QPen(Qt.red))
self.setCurvePen(self.curve2, QPen(Qt.blue))
self.setCurvePen(self.curve3, QPen(Qt.green))
self.setCurvePen(self.curve4, QPen(Qt.black))
self.setCurvePen(self.curve5, QPen(Qt.cyan))
# Make data plot shape square
self.setCurveStyle(self.curve1, QwtCurve.Steps)
self.setCurveStyle(self.curve2, QwtCurve.Steps)
self.setCurveStyle(self.curve3, QwtCurve.Steps)
self.setCurveStyle(self.curve4, QwtCurve.Steps)
self.setCurveStyle(self.curve5, QwtCurve.Steps)
# Fixed axis here from 0 to 5
self.setAxisScale(QwtPlot.yLeft,0,5,1)
self.setAxisTitle(QwtPlot.xBottom, "Time (seconds)")
self.setAxisTitle(QwtPlot.yLeft, "Values")
self.startTimer(50)
# init the K8055 board
self.k = k8055(0)
# __init__()
def timerEvent(self, e):
# data moves from left to right:
# shift data array right and assign new value data[0]
self.d1 = concatenate((self.d1[:1], self.d1[:-1]), 1)
self.d1[0] = self.k.ReadDigitalChannel(1) * 0.95
self.d2 = concatenate((self.d2[:1], self.d2[:-1]), 1)
self.d2[0] = self.k.ReadDigitalChannel(2) * 0.95 + 1 # Shift data up 1
self.d3 = concatenate((self.d3[:1], self.d3[:-1]), 1)
self.d3[0] = self.k.ReadDigitalChannel(3) * 0.95 + 2 # Shift data up 2...
self.d4 = concatenate((self.d4[:1], self.d4[:-1]), 1)
self.d4[0] = self.k.ReadDigitalChannel(4) * 0.95 + 3
self.d5 = concatenate((self.d5[:1], self.d5[:-1]), 1)
self.d5[0] = self.k.ReadDigitalChannel(5) * 0.95 + 4
self.setCurveData(self.curve1, self.x, self.d1)
self.setCurveData(self.curve2, self.x, self.d2)
self.setCurveData(self.curve3, self.x, self.d3)
self.setCurveData(self.curve4, self.x, self.d4)
self.setCurveData(self.curve5, self.x, self.d5)
self.replot()
# timerEvent()
# class DataPlot
def main(args):
app = QApplication(args)
demo = make()
app.setMainWidget(demo)
app.exec_loop()
# main()
def make():
demo = DataPlot()
demo.resize(500, 300)
demo.show()
return demo
# make()
# Admire
if __name__ == '__main__':
main(sys.argv)
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