[Matplotlib-users] trying to Copy plot from one MplWidget canvas to another

[<Dav...@se...>]

Hey folks,

my problem may be obvious, but i can't seem to copy a plot from one canvas
to another.

# I have this object   where whichCanvas is an instance of  MplWidget (code
shown below)

       self.whichCanvas.canvas.ax.plot(xData, yData, 'bo', linewidth=1.5,
linestyle='-')




# I want to copy the plot and axes  to another MplWidget object

      self.anotherCanvas.canvas



I've tried:

self.anotherCanvas.canvas.ax = self.whichCanvas.canvas.ax
self.anotherCanvas.canvas.draw()

and

self.anotherCanvas.canvas = self.whichCanvas.canvas
self.anotherCanvas.canvas.draw()

the plot doesn't seem to copy.  Does any body more familiar with matplotlib
have any suggestions?





This is the MplWidget Class
***************************** MplWidget *******************************

from PyQt4 import QtGui
from matplotlib.backends.backend_qt4agg \
        import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure




class MplCanvas(FigureCanvas):
    def __init__(self):
        self.fig = Figure()
        self.ax = self.fig.add_subplot(111)
        FigureCanvas.__init__(self, self.fig)
        FigureCanvas.setSizePolicy(self,
            QtGui.QSizePolicy.Expanding,
            QtGui.QSizePolicy.Expanding)
        FigureCanvas.updateGeometry(self)




class MplWidget(QtGui.QWidget):

    def __init__(self, parent = None):
        QtGui.QWidget.__init__(self, parent)
        self.canvas = MplCanvas()
        self.vbl = QtGui.QVBoxLayout()
        self.vbl.addWidget(self.canvas)
        self.setLayout(self.vbl)



Regards,
Dave Tung

cell: 925-321-6657
office: 510-353-4770
dav...@se...