Source code for padua.normalization
import numpy as np
[docs]def subtract_column_median(df, prefix='Intensity '):
"""
Apply column-wise normalisation to expression columns.
Default is median transform to expression columns beginning with Intensity
:param df:
:param prefix: The column prefix for expression columns
:return:
"""
df = df.copy()
df.replace([np.inf, -np.inf], np.nan, inplace=True)
mask = [l.startswith(prefix) for l in df.columns.values]
df.iloc[:, mask] = df.iloc[:, mask] - df.iloc[:, mask].median(axis=0)
return df