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dft_tools/doc/reference/python/data_analysis/fit/demo1.py

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from pytriqs.plot.mpl_interface import oplot
from pytriqs.fit.fit import Fit, linear, quadratic
from pytriqs.gf.local import *
from pytriqs.gf.local.descriptors import iOmega_n
g = GfImFreq(indices = [1], beta = 300, n_points = 1000, name = "g")
g <<= inverse( iOmega_n + 0.5 )
print " van plot"
oplot (g, '-o', x_window = (0,3) )
print "plot done"
g<<= inverse( iOmega_n + 0.5 )
print "ok ----------------------"
from pytriqs.archive import HDFArchive
R = HDFArchive('myfile.h5', 'r')
for n, calculation in R.items() :
#g = calculation['g']
g <<= inverse( iOmega_n + 0.5 )
print "pokokook"
X,Y = g.x_data_view (x_window = (0,0.2), flatten_y = True )
#fitl = Fit ( X,Y.imag, linear )
g <<= inverse( iOmega_n + 0.5 )
print " van plot"
oplot (g, '-o', x_window = (0,3) )
g <<= inverse( iOmega_n + 0.5 )
print g
g <<= inverse( iOmega_n + 0.5 )
break
ginv = inverse( g )
print ginv
sigma = iOmega_n - g
#oplot (ginv, '-o', x_window = (0,3) )
#break
oplot (sigma, '-o', x_window = (0,3) )
#oplot (fitl , '-x', x_window = (0,0.5) )
#print n, fitl.param[0]