On 2014/06/21, 3:39 PM, 不坏阿峰 wrote: > is there someone can help me ?
Posting a *simple*, self-contained example as a starting point would make it more likely that someone would understand your question. Leave out everything that is irrelevant--I suspect all the gui and threading code is in that category. Also, although it is not directly related to your question, please note that you are using a horrible mixture of backend invocations, and even if it works now, it will do you no good in the long run. See the embedding examples: no matplotlib.use, no pylab, one and only one gui toolkit. I also suspect the answer to your question is at least partly in one of the examples of plotting with dates; dates and times are handled together. Here is one such example: http://matplotlib.org/examples/pylab_examples/date_demo1.html Eric > many thanks > > > 2014-06-19 19:36 GMT+07:00 不坏阿峰 <onlydeb...@gmail.com > <mailto:onlydeb...@gmail.com>>: > > 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_()) > > ################################# > 内嵌图片 1 > > > > > ------------------------------------------------------------------------------ > HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions > Find What Matters Most in Your Big Data with HPCC Systems > Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. > Leverages Graph Analysis for Fast Processing & Easy Data Exploration > http://p.sf.net/sfu/hpccsystems > > > > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions Find What Matters Most in Your Big Data with HPCC Systems Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. Leverages Graph Analysis for Fast Processing & Easy Data Exploration http://p.sf.net/sfu/hpccsystems _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
