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"""Test the new %gui command. Run this in ipython as
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In [1]: %gui [backend]
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In [2]: %run switchgui [backend]
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where the optional backend can be one of: qt4, gtk, tk, wx.
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Because of subtle difference in how Matplotlib handles the different GUI
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toolkits (in things like draw and show), minor modifications to this script
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have to be made for Tk to get it to work with the 0.99 and below releases
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of Matplotlib. However, in the future, Matplotlib should be able to have
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similar logic for all the toolkits, as they are all now using PyOS_InputHook.
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"""
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import sys
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import time
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from IPython.lib import inputhook
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gui = inputhook.current_gui()
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if gui is None:
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gui = 'qt4'
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inputhook.enable_qt4(app=True)
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backends = dict(wx='wxagg', qt4='qt4agg', gtk='gtkagg', tk='tkagg')
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import matplotlib
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matplotlib.use(backends[gui])
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matplotlib.interactive(True)
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import matplotlib
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from matplotlib import pyplot as plt, mlab, pylab
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import numpy as np
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from numpy import *
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from matplotlib.pyplot import *
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x = np.linspace(0,pi,500)
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print "A plot has been created"
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line, = plot(x,sin(2*x))
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inputhook.spin() # This has to be removed for Tk
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print "Now, we will update the plot..."
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print
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for i in range(1,51):
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print i,
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sys.stdout.flush()
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line.set_data(x,sin(x*i))
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plt.title('i=%d' % i)
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plt.draw()
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inputhook.spin() # This has to be removed for Tk
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