Esempio n. 1
0
import numpy as np
from lmfit import minimize, Parameters, fit_report
import matplotlib.pyplot as plt
import maxwell as m
import freqTest as ft

# stevilo praznih vrstic
prazneVrstice = 5

# imena datotek s podatki
file1 = 'S1GelanP0.5T20.csv'
file2 = 'S1GelanP0.7T20.csv'
file3 = 'S1GelanP1.0T20.csv'

# uvozimo podatke
omega1, G1_1, G2_1 = ft.podatki(file1, prazneVrstice)
omega2, G1_2, G2_2 = ft.podatki(file2, prazneVrstice)
omega3, G1_3, G2_3 = ft.podatki(file3, prazneVrstice)

# stevilo maxwellovih elementov
N1 = 6
N2 = 6
N3 = 5

# nastavimo zacetne vrednosti in omejitve parametrov
par1 = Parameters()
for i in range(1,N1+1):
    gstr = 'g'+str(i)
    lstr = 'l'+str(i)
    par1.add(gstr,value=1,min=1.e-7)
    par1.add(lstr,value=1,min=1.e-7)
Esempio n. 2
0
import numpy as np
from lmfit import minimize, Parameters, fit_report
import matplotlib.pyplot as plt
import maxwell as m
import freqTest as ft

# stevilo praznih vrstic
prazneVrstice = 5

# imena datotek s podatki
file1 = '1skupina.csv'

# uvozimo podatke
omega, G1, G2 = ft.podatki(file1, prazneVrstice)

# stevilo maxwellovih elementov
N = 5

# nastavimo zacetne vrednosti in omejitve parametrov
par = Parameters()
for i in range(1, N + 1):
    gstr = 'g' + str(i)
    lstr = 'l' + str(i)
    par.add(gstr, value=1, min=1.e-4)
    par.add(lstr, value=1, min=1.e-4)

# minimizacija napake - non-linear least squares method
out = minimize(ft.maxwell, par, args=(N, omega, G1, G2), method='leastsq')

# pridobimo parametre iz fitanja
g, l = ft.koeficienti(par, N)