Controling a matplotlib plot from a separate window - plot

Question

I'm trying to create the simplest example of controlling a plot in one window from buttons and functions in another window. I know I'm going to need more things in the window with the plot, so, I need to create my plot figure withing a QT window.
This is what I have so far:
My control window:
import sys
from PyQt4.QtCore import (QSize, SIGNAL)
from PyQt4.QtGui import (QApplication, QDialog, QPushButton, QVBoxLayout)
import PlotWindow
class Window(QDialog):
def __init__(self, parent=None):
super(Window, self).__init__(parent)
self.pushButton1 = QPushButton()
self.pushButton1.setMaximumSize(QSize(110, 24))
self.pushButton1.setObjectName("pushButton1")
self.pushButton1.setText("Open Plot")
self.pushButton2 = QPushButton()
self.pushButton2.setMaximumSize(QSize(110, 24))
self.pushButton2.setObjectName("pushButton2")
self.pushButton2.setText("Update Plot")
layout = QVBoxLayout()
layout.addWidget(self.pushButton1)
layout.addWidget(self.pushButton2)
self.setLayout(layout)
self.setWindowTitle("Plot Control")
self.connect(self.pushButton1,SIGNAL("clicked()"),self.plotNew)
def plotNew(self):
print "new plot window"
self.dialog = PlotWindow.PlotWindow()
self.dialog.show()
app = QApplication(sys.argv)
form = Window()
form.open()
app.exec_()
My plot window :
import matplotlib
import numpy as np
from PyQt4 import QtGui
from matplotlib.lines import Line2D
import matplotlib.pyplot as plt
import matplotlib.animation as animation
class PlotWindow(QtGui.QDialog):
def __init__(self, parent=None):
super(PlotWindow, self).__init__(parent)
self.fig = plt.figure()
self.ax = self.fig.add_subplot(111)
plt.draw()
Obviously my plot window is where I'm having the biggest problems. I've gone through lots of examples, but none of them seem to show how to place a plot within another window.
Thanks

Answer 1

Well, I can answer part of my own question, but I would like comments on whether or not this is the best way to accomplish. The following code shows the changes I've made to bring up a second window with a plot inside.
import sys
from PyQt4 import QtGui
import numpy as np
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QT as NavigationToolbar
class PlotCanvas(FigureCanvas):
def __init__(self, parent):
self.fig = Figure()
self.axes = self.fig.add_subplot(111)
# self.x = np.arange(0.0,0.3,0.01)
# self.y = np.cos(2*np.pi*self.x)
# self.axes.plot(self.x,self.y)
FigureCanvas.__init__(self, self.fig)
self.setParent(parent)
FigureCanvas.setSizePolicy(self,QtGui.QSizePolicy.Expanding,QtGui.QSizePolicy.Expanding)
class PlotWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setWindowTitle("Plot Figure")
self.main_widget = QtGui.QWidget(self)
vbl = QtGui.QVBoxLayout(self.main_widget)
qmc = PlotCanvas(self.main_widget)
ntb = NavigationToolbar(qmc, self.main_widget)
vbl.addWidget(qmc)
vbl.addWidget(ntb)
self.main_widget.setFocus()
self.setCentralWidget(self.main_widget)
I still need help with setting the data for the plot from the other window.
Thanks