def __resid(pars, ncoefs=1, knots=None, order=3, irbkg=1, nfft=2048,
kraw=None, mu=None, kout=None, ftwin=1, chi_std=None, **kws):
coefs = [getattr(pars, FMT_COEF % i) for i in range(ncoefs)]
bkg, chi = spline_eval(kraw, mu, knots, coefs, order, kout)
if chi_std is not None:
chi = chi - chi_std
return realimag(xafsft_fast(chi*ftwin, nfft=nfft)[:irbkg])
def fftf(self, chi, kweight=None):
""" forward FT -- meant to be used internally.
chi must be on self.k_ grid"""
self.make_karrays()
if self.kwin is None:
self.kwin = ftwindow(self.k_, xmin=self.kmin, xmax=self.kmax,
dx=self.dk, dx2=self.dk2, window=self.window)
if kweight is None:
kweight = self.get_kweight()
cx = chi * self.kwin[:len(chi)] * self.k_[:len(chi)]**kweight
return xafsft_fast(cx, kstep=self.kstep, nfft=self.nfft)
def __resid(pars,
knots=None,
order=3,
irbkg=1,
nfft=2048,
kraw=None,
mu=None,
kout=None,
ftwin=1,
**kws):
coefs = [p.value for p in pars.values()]
bkg, chi = spline_eval(kraw, mu, knots, coefs, order, kout)
return realimag(xafsft_fast(chi * ftwin, nfft=nfft)[:irbkg])
def __resid(pars, knots=None, order=3, irbkg=1, nfft=2048,
kraw=None, mu=None, kout=None, ftwin=1, **kws):
coefs = [p.value for p in pars.values()]
bkg, chi = spline_eval(kraw, mu, knots, coefs, order, kout)
return realimag(xafsft_fast(chi*ftwin, nfft=nfft)[:irbkg])