guess_fwhm

sherpa.utils.guess_fwhm(y, x, xhi=None, scale=1000)[source] [edit on github]

Estimate the value and valid range for the FWHM of the data.

Parameters
  • y (array_like) – The data points.

  • x (array_like) – The data points.

  • xhi (None or array_like, optional) – If given then the x array is taken to be the low-edge of each bin.

  • scale (number, optional) – The scaling factor applied to the value to calculate the minimum (divide) and maximum (multiply) value for the FWHM range.

Returns

ans – The keys are ‘val’, ‘min’, and ‘max’, which give the full-width half-maximum and its range.

Return type

dict

See also

get_fwhm

Notes

If there are multiple peaks of the same height then the first peak is used.