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