metaMDS: S3 class placeholder definition (list) for metaMDS
Description
The ape package does export a version of its
metaMDS
-class, partly because it is
not really defined formally anywhere. Instead, it is an
S3 class extended from the base class, list
-- this is a very common and easy approach -- and proper
behavior of any method taking an instance of this class
requires exact naming conventions for element names of
the list components. The phyloseq package does not
provide any validity checks that a given phylo instance
is valid (conforms to the conventions in the ape
package)... yet. If problems arise, this might be
considered, and they could be defined judiciously and
within phyloseq.