[R] any DCCA function in R?

Dear members, I am performing multivariate analysis on marine benthic populations using R. At first glance I found ca and VEGANO packages to be the suitable for the task, but neither has incorporated Detrended Canonical Correspondence Analysis (DCCA), which is just the method I want to apply

[R] problems with lattice barchart

Hello everybody! I´m trying to create figures summarizing the abundance of a given species (y), by its length classes (x), year (conditional factor) and a grouping named as "fraction". I am using the lattice´s barchart but some problems arises: When I run the function, the si