mescla.emma.pca

Eigen-analysis of standardised water chemistry.

Conservative mixing of end-members with constant composition is a linear process, so a data set of mixtures has low rank: it lies in a subspace whose dimension is one less than the number of end-members. Eigen-analysis is how that rank is recovered (Christophersen & Hooper, 1992).

Running the decomposition on standardised data makes this a correlation-matrix PCA.

Functions

eigen_decomposition

Eigen-decomposition of the covariance of Z.

Classes

EigenStructure

Eigenvalues and eigenvectors, sorted by decreasing eigenvalue.