Dear all
could some expert can help me.
I have modify from one demo. but i do not how to change the x_lable to time
like H:M:S, and can move it. i have try some way, but failed.
hope some expert can do me a favor.
thanks a lot
######################
# coding=utf-8
import os
import pprint
import random, time
import sys
from PyQt4 import QtGui, QtCore
from threading import *
import time
import datetime
import matplotlib
matplotlib.use('WXAgg')
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import \
FigureCanvasQTAgg as FigCanvas, \
NavigationToolbar2QT as NavigationToolbar
import numpy as np
import pylab
class DataGen(object):
""" A silly class that generates pseudo-random data for
display in the plot.
"""
def __init__(self, init=50):
self.data = self.init = init
def next(self):
self._recalc_data()
return self.data
def _recalc_data(self):
delta = random.uniform(-0.5, 0.5)
r = random.random()
if r > 0.9:
self.data += delta * 15
elif r > 0.8:
# attraction to the initial value
delta += (0.5 if self.init > self.data else -0.5)
self.data += delta
else:
self.data += delta
class myThing():
class myThread(Thread):
def __init__(self):
Thread.__init__(self)
self.running = True
self.vec = [0]
self.dg = DataGen()
print "Initializing myThread..."
def run(self):
print "Running myThread..."
while self.running:
time.sleep(1)
self.vec.append(self.dg.next())
print "Splat"
def getVec(self):
return self.vec
def stop(self):
self.running = False
def __init__(self):
self.theThread = self.myThread()
self.threadRunning = True
print "initializing myThing..."
self.theThread.start()
def __del__(self):
self.theThread.stop()
def getVec(self):
#print self.theThread.vec[:]
return self.theThread.vec[:]
class ApplicationWindow(QtGui.QMainWindow):
""" The main window of the application
"""
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
self.setWindowTitle('Demo: dynamic matplotlib graph')
self.thing1 = myThing()
self.thing2 = myThing()
self.starttime = int(time.time())
self.create_menu()
#self.create_status_bar()
self.create_main_panel()
self.redraw_timer = QtCore.QTimer(self)
QtCore.QObject.connect(self.redraw_timer,
QtCore.SIGNAL("timeout()"), self.on_redraw_timer)
self.redraw_timer.start(4000)
def create_menu(self):
menu_file = QtGui.QMenu("&File", self)
#menu_file.addAction(u'&Save plot', self.on_save_plot,
# QtCore.Qt.CTRL + QtCore.Qt.Key_S)
menu_file.addSeparator()
menu_file.addAction(u'E&xit', self.on_exit,
QtCore.Qt.CTRL + QtCore.Qt.Key_X)
self.menuBar().addMenu(menu_file)
def create_main_panel(self):
self.panel = QtGui.QFrame(self)
self.setCentralWidget(self.panel)
self.init_plot()
self.canvas = FigCanvas(self.fig)
self.canvas.setMinimumHeight(150)
#self.toolbar = NavigationToolbar(self.canvas, None)
self.vbox = QtGui.QVBoxLayout()
self.vbox.addWidget(self.canvas)
self.panel.setLayout(self.vbox)
#self.vbox.Fit(self)
self.unit = 20
width, height = self.geometry().width(), self.geometry().height()
self.show()
def init_plot(self):
self.dpi = 100
self.fig = Figure((5.0, 3.0), dpi=self.dpi)
self.axes = self.fig.add_subplot(111, navigate=False)
self.axes.set_axis_bgcolor('black')
self.axes.set_title('Very important random data', size=10)
self.axes.set_xlabel('Time flies like an arrow',size=10)
self.axes.set_ylabel('Random is just random',size=10)
pylab.setp(self.axes.get_xticklabels(), fontsize=8)
pylab.setp(self.axes.get_yticklabels(), fontsize=8)
self.plot_data = self.axes.plot(
self.thing1.getVec(),
linewidth=0.5,
color=(1, 1, 0),
#marker='o',
label="set1",
)[0]
print self.thing1.getVec(), "<<>>"
self.plot_data2 = self.axes.plot(
self.thing2.getVec(),
linewidth=1,
dashes=[.2, .4],
color=(0, 1, 1),
label="set2",
)[0]
def draw_plot(self):
""" Redraws the plot
"""
self.data = self.thing1.getVec()
self.data2 = self.thing2.getVec()
def do_cal(urdata):
newdata = []
for x in range(len(urdata)):
urtime = x + self.starttime
newdata.append(urtime)
return newdata
xmax = len(self.data) if len(self.data) > 50 else 50
xmin = xmax - 50
min1 = min(self.data)
min2 = min(self.data2)
theMin = min(min1, min2)
ymin = round(theMin, 0) - 1
max1 = max(self.data)
max2 = max(self.data2)
theMax = max(max1, max2)
ymax = round(theMax, 0) + 1
self.axes.set_xbound(lower=xmin, upper=xmax)
self.axes.set_ybound(lower=ymin, upper=ymax)
self.axes.grid(True, color='gray')
pylab.setp(self.axes.get_xticklabels(),
visible=True)
self.plot_data.set_xdata(np.arange(len(self.data)))
self.plot_data.set_ydata(np.array(self.data))
self.plot_data2.set_xdata(np.arange(len(self.data2)))
#self.plot_data2.set_xdata(np.array(newdata2))
self.plot_data2.set_ydata(np.array(self.data2))
self.canvas.draw()
def on_redraw_timer(self):
self.draw_plot()
def on_exit(self):
self.close()
def closeEvent(self, event):
for thing in (self.thing1, self.thing2):
thing.theThread.stop()
thing.theThread.join()
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
aw = ApplicationWindow()
aw.show()
sys.exit(app.exec_())
#################################
[image: 内嵌图片 1]
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