# ****************************************************************************
# 
# ALPS Project: Algorithms and Libraries for Physics Simulations
# 
# ALPS Libraries
# 
# Copyright (C) 2009-2010 by Matthias Troyer <troyer@phys.ethz.ch> 
# 
# This software is part of the ALPS libraries, published under the ALPS
# Library License; you can use, redistribute it and/or modify it under
# the terms of the license, either version 1 or (at your option) any later
# version.
#  
# You should have received a copy of the ALPS Library License along with
# the ALPS Libraries; see the file LICENSE.txt. If not, the license is also
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import pyalps
import matplotlib.pyplot as plt
import pyalps.plot

#prepare the input parameters
parms = [{ 
          'LATTICE'        : "chain lattice", 
          'MODEL'          : "spin",
          'local_S'        : 0.5,
          'L'              : 40,
          'J'              : -1 ,
          'CUTOFF'         : 1000
        }]

#write the input file and run the simulation
input_file = pyalps.writeInputFiles('parm6a',parms)
res = pyalps.runApplication('qwl',input_file)

#run the evaluation and load all the plots
data = pyalps.evaluateQWL(pyalps.getResultFiles(prefix='parm6a'),DELTA_T=0.1, T_MIN=0.1, T_MAX=10.0)

#make plot
for s in pyalps.flatten(data):
  plt.figure()
  plt.title("Ferromagnetic Heisenberg chain")
  pyalps.plot.plot(s)

plt.show()