skbio.stats.ordination.pcoa_biplot

skbio.stats.ordination.pcoa_biplot(ordination, y)[source]

Compute the projection of descriptors into a PCoA matrix

State: Experimental as of 0.5.3.

This implementation is as described in Chapter 9 of Legendre & Legendre, Numerical Ecology 3rd edition.

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

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

Return type

OrdinationResults