skbio.stats.ordination.pcoa_biplot

skbio.stats.ordination.pcoa_biplot(ordination, y)

Compute the projection of descriptors into a PCoA matrix.

Parameters:

ordination: OrdinationResults

The computed principal coordinates analysis of dimensions (n, c) where the matrix y will be projected onto.

y: DataFrame

Samples by features table of dimensions (n, m). These can be environmental features or abundance counts. This table should be normalized in cases of dimensionally heterogenous physical variables.

Returns:

OrdinationResults

The modified input object that includes projected features onto the ordination space in the features attribute.

Notes

This implementation is as described in Chapter 9 of [1].

References

[1]

Legendre P. and Legendre L. 1998. Numerical Ecology. Elsevier, Amsterdam.