.. _old_animation-dynamic_image_wxagg2:

old_animation example code: dynamic_image_wxagg2.py
===================================================

[`source code <dynamic_image_wxagg2.py>`_]

::

    #!/usr/bin/env python
    """
    Copyright (C) 2003-2005 Jeremy O'Donoghue and others
    
    License: This work is licensed under the PSF. A copy should be included
    with this source code, and is also available at
    http://www.python.org/psf/license.html
    
    """
    import sys, time, os, gc
    
    import matplotlib
    matplotlib.use('WXAgg')
    
    from matplotlib import rcParams
    import numpy as npy
    
    import matplotlib.cm as cm
    
    from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg
    from matplotlib.backends.backend_wx import NavigationToolbar2Wx
    
    from matplotlib.figure import Figure
    from wx import *
    
    
    TIMER_ID = NewId()
    
    class PlotFigure(Frame):
    
        def __init__(self):
            Frame.__init__(self, None, -1, "Test embedded wxFigure")
    
            self.fig = Figure((5,4), 75)
            self.canvas = FigureCanvasWxAgg(self, -1, self.fig)
            self.toolbar = NavigationToolbar2Wx(self.canvas)
            self.toolbar.Realize()
    
            # On Windows, default frame size behaviour is incorrect
            # you don't need this under Linux
            tw, th = self.toolbar.GetSizeTuple()
            fw, fh = self.canvas.GetSizeTuple()
            self.toolbar.SetSize(Size(fw, th))
    
            # Create a figure manager to manage things
    
            # Now put all into a sizer
            sizer = BoxSizer(VERTICAL)
            # This way of adding to sizer allows resizing
            sizer.Add(self.canvas, 1, LEFT|TOP|GROW)
            # Best to allow the toolbar to resize!
            sizer.Add(self.toolbar, 0, GROW)
            self.SetSizer(sizer)
            self.Fit()
            EVT_TIMER(self, TIMER_ID, self.onTimer)
    
        def init_plot_data(self):
            # jdh you can add a subplot directly from the fig rather than
            # the fig manager
            a = self.fig.add_axes([0.075,0.1,0.75,0.85])
            cax = self.fig.add_axes([0.85,0.1,0.075,0.85])
            self.x = npy.empty((120,120))
            self.x.flat = npy.arange(120.0)*2*npy.pi/120.0
            self.y = npy.empty((120,120))
            self.y.flat = npy.arange(120.0)*2*npy.pi/100.0
            self.y = npy.transpose(self.y)
            z = npy.sin(self.x) + npy.cos(self.y)
            self.im = a.imshow( z, cmap=cm.jet)#, interpolation='nearest')
            self.fig.colorbar(self.im,cax=cax,orientation='vertical')
    
        def GetToolBar(self):
            # You will need to override GetToolBar if you are using an
            # unmanaged toolbar in your frame
            return self.toolbar
    
        def onTimer(self, evt):
            self.x += npy.pi/15
            self.y += npy.pi/20
            z = npy.sin(self.x) + npy.cos(self.y)
            self.im.set_array(z)
            self.canvas.draw()
            #self.canvas.gui_repaint()  # jdh wxagg_draw calls this already
    
        def onEraseBackground(self, evt):
            # this is supposed to prevent redraw flicker on some X servers...
            pass
    
    if __name__ == '__main__':
        app = PySimpleApp()
        frame = PlotFigure()
        frame.init_plot_data()
    
        # Initialise the timer - wxPython requires this to be connected to
        # the receiving event handler
        t = Timer(frame, TIMER_ID)
        t.Start(200)
    
        frame.Show()
        app.MainLoop()
    
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)