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add backend kwarg to spectrum.fit() #249

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Mar 18, 2021
Merged

add backend kwarg to spectrum.fit() #249

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6 changes: 4 additions & 2 deletions becquerel/core/spectrum.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1350,7 +1350,7 @@ def fill_between(self, **kwargs):
plotter = plotting.SpectrumPlotter(self, **kwargs)
return plotter.fill_between()

def fit(self, model, xmode, ymode, roi=None, perform_fit=True):
def fit(self, model, xmode, ymode, roi=None, perform_fit=True, backend="lmfit"):
"""Create a Fitter object based on this Spectrum and perform the fit.

Parameters
Expand All @@ -1366,6 +1366,8 @@ def fit(self, model, xmode, ymode, roi=None, perform_fit=True):
perform_fit : bool
If True, perform the fit now, otherwise, set up fitter without
performing the fit.
backend : {'lmfit', 'lmfit-pml'}
Backend fitting module to use. Only used if perform_fit=True.

Returns
-------
Expand All @@ -1380,7 +1382,7 @@ def fit(self, model, xmode, ymode, roi=None, perform_fit=True):
fitter._xmode = xmode
fitter._ymode = ymode
if perform_fit:
fitter.fit()
fitter.fit(backend=backend)
return fitter


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