Metric and Euclidean properties of dissimilarity coefficients. Numerical Ecology , 2nd English edition. Elsevier Science BV, Amsterdam. The art of scientific computing. The output in the dialogue window is the following, using the Bray-Curtis distance and correction method 1.
Principal coordinate analysis with correction for negative eigenvalues, if any.
For Bray-Curtis distance and correction method 2, the output in the dialogue window is the following. Principal coordinate analysis with correction for negative eigenvalues, if any. Principal coordinate analysis with correction for negative eigenvalues, if any. The negative eigenvalues, if any, are being ignored in this analysis.