abundance.spp: Abundance of trees by species and DBH classes.
In forestgeo/ctfs: Tools for the Analysis of Forest Dynamics

A wrapper to calculate total abundance (or ba or agb) for each species in given dbh categories. The dbh categories are set with dbhbreaks.

1 2	abundance.spp(censdata, type = "abund", dbhunit = "mm", alivecode = c("A"), dbhbreaks = c(10, 100, 300))

`censdata`	A table of plot census data.
`type`	Either 'abund' (default) for abundance, 'ba' for basal area, or 'agb'.
`dbhunit`	'cm' or 'mm', only used for basal area
`alivecode`	character, codes of the variable `status` that indicate the tree is alive. The default 'A' is the standard CTFS designation for living trees or stems
`dbhbreaks`	a vector of dbhs to define divisions of categories; the last category will be >= the final division