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32 lines
761 B
Python
32 lines
761 B
Python
"""
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Copyright 2011 Mario Mulansky
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Copyright 2012 Karsten Ahnert
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Stochastic euler stepper example and Ornstein-Uhlenbeck process
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or
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copy at http://www.boost.org/LICENSE_1_0.txt)
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"""
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from pylab import *
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from scipy import special
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data1 = loadtxt("elliptic1.dat")
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data2 = loadtxt("elliptic2.dat")
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data3 = loadtxt("elliptic3.dat")
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sn1,cn1,dn1,phi1 = special.ellipj( data1[:,0] , 0.51 )
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sn2,cn2,dn2,phi2 = special.ellipj( data2[:,0] , 0.51 )
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sn3,cn3,dn3,phi3 = special.ellipj( data3[:,0] , 0.51 )
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semilogy( data1[:,0] , abs(data1[:,1]-sn1) )
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semilogy( data2[:,0] , abs(data2[:,1]-sn2) , 'ro' )
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semilogy( data3[:,0] , abs(data3[:,1]-sn3) , '--' )
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show()
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