What is temporalEF?

temporalEF is a small R package for computing temporal eigenfunctions. Temporal eigenfunctions are based on principal coordinates of neighbour matrices (PCNM) or asymmetric eigenvector maps (AEM) but for a 1-dimensional system, a time series. As with their spatial counterparts, these can be used to examine the time-dependent patterns of variance in a multivariate data set.

Bugs, feature requests

temporalEF is still pre-alpha code. I’ll get it up on github in the next few weeks and update this page.


  • PCNM for a 1-dimensional process
  • AEM for a 1-dimensional process


temporalEF is released under the GNU General Public Licence Version 2.