21 lines
464 B
Python
21 lines
464 B
Python
import lmfit
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import numpy as np
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pv = lmfit.models.PseudoVoigtModel()
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def fitPeak(x,y,autorange=False):
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if autorange:
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# find fwhm
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idx = np.ravel(np.argwhere( y<y.max()/2 ))
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# find first crossing
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p1 = idx[idx<np.argmax(y)][-1]
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p2 = idx[idx>np.argmax(y)][0]
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c = int( (p1+p2)/2 )
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dp = int( np.abs(p1-p2) )
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idx = slice(c-dp,c+dp)
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x = x[idx]
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y = y[idx]
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pars = pv.guess(y,x=x)
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ret = pv.fit(y,x=x,params=pars)
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return ret
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