# ****************************************************************************
# 
# ALPS Project: Algorithms and Libraries for Physics Simulations
# 
# ALPS Libraries
# 
# Copyright (C) 2010 by Brigitte Surer
#
# 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
# available from http://alps.comp-phys.org/.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
# FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT 
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# ****************************************************************************

import pyalps
import matplotlib.pyplot as plt
import pyalps.plot
import numpy as np

#prepare the input parameters
parms = []
for l in [8,10,12,16]:
    for j2 in [0.2,0.25,0.3,0.35,0.4]:
        parms.append(
            { 
              'LATTICE'        : "coupled ladders", 
              'local_S'        : 0.5,
              'ALGORITHM'      : 'loop',
              'SEED'           : 0,
              'BETA'           : 2*l,
              'J0'             : 1 ,
              'J1'             : 1,
              'J2'             : j2,
              'THERMALIZATION' : 5000,
              'SWEEPS'         : 50000, 
              'MODEL'          : "spin",
              'L'              : l,
              'W'              : l/2
            }
    )
    
#write the input file and run the simulation
input_file = pyalps.writeInputFiles('parm8b',parms)
pyalps.runApplication('loop',input_file)

data = pyalps.loadMeasurements(pyalps.getResultFiles(pattern='parm8b.task*.out.h5'),['Binder Ratio of Staggered Magnetization','Stiffness'])

binder=pyalps.collectXY(data,x='J2',y='Binder Ratio of Staggered Magnetization', foreach=['L'])
stiffness =pyalps.collectXY(data,x='J2',y='Stiffness', foreach=['L'])

for q in stiffness:
    q.y = q.y*q.props['L']

#make plot    
plt.figure()
pyalps.plot.plot(stiffness)
plt.xlabel(r'$J2$')
plt.ylabel(r'Stiffness $\rho_s L$')
plt.title('coupled ladders')

plt.figure()
pyalps.plot.plot(binder)
plt.xlabel(r'$J_2$')
plt.ylabel(r'$g(m_s)$')
plt.title('coupled ladders')
plt.show()