skbio.stats.composition.multiplicative_replacement#
- skbio.stats.composition.multiplicative_replacement(mat, delta=None)[source]#
Replace all zeros with small non-zero values.
This function is an alias for
multi_replace.- Parameters:
- matarray_like of shape (n_compositions, n_components)
A matrix of proportions.
- deltafloat, optional
A small number to be used to replace zeros. If not specified, the default value is \(\delta = \frac{1}{N^2}\) where \(N\) is the number of components.
- Returns:
- ndarray of shape (n_compositions, n_components)
The matrix where all of the values are non-zero and each composition (row) adds up to 1.
- Raises:
- ValueError
If negative proportions are created due to a large
delta.
Warning
multiplicative_replacementis deprecated as of0.6.0in favor ofmulti_replace.See also