def add_gaussv_noise(im: IntensityMatrix, scale: float, cutoff: int,
prop: float):
"""
adds noise to an IntensityMatrix object
:param im: the intensity matrix object
:type im: pyms.IntensityMatrix.IntensityMatrix
:param scale: the scale of the normal distribution from which the noise is drawn
:type scale: float
:param cutoff: The level below which the intensity of the ic at that point
has no effect on the scale of the noise distribution
:type cutoff: int
:param scale: The scale of the normal distribution for ic values
:type scale: int
:param prop: For intensity values above the cutoff, the scale is
multiplied by the ic value multiplied by prop
:type prop: float
:author: Sean O'Callaghan
"""
n_scan, n_mz = im.size
for i in range(n_mz):
ic = im.get_ic_at_index(i)
add_gaussv_noise_ic(ic, scale, cutoff, prop)
im.set_ic_at_index(i, ic)
def add_gaussc_noise(im: IntensityMatrix, scale: float):
"""
Adds noise to an IntensityMatrix object
:param im: the intensity matrix object
:type im: pyms.IntensityMatrix.IntensityMatrix
:param scale: the scale of the normal distribution from which the noise is drawn
:type scale: float
:author: Sean O'Callaghan
"""
n_scan, n_mz = im.size
for i in range(n_mz):
ic = im.get_ic_at_index(i)
add_gaussc_noise_ic(ic, scale)
im.set_ic_at_index(i, ic)