mescla.plotting.diagrams.plot_loadings¶
- mescla.plotting.diagrams.plot_loadings(model, n_components=None, axes=None, theme='light')[source]¶
Eigenvector loadings: which species drive which component.
The figure where an EMMA becomes chemistry rather than linear algebra. In a hydrochemical data set the first component almost always has every species loading the same sign – that is the dilution axis, and it discriminates nothing. The sources are separated by the components after it, where the signs split.
Sign is carried by bar direction and reinforced by the diverging colours, and the species are ordered by their loading on the first component shown so the structure reads left to right.