Example function for estimating wood volume (in m3/ha) from a tree table or forest object.

default_volume_function(x, SpParams = NULL)



A data frame with columns 'DBH', 'Height' and 'N' or a forest object


A data frame with species parameters (not used in the default function but will be called)


Users should define their own functions taking into account that:

  • Input should be named 'x' and consist of a tree table with tree records as rows and columns 'DBH' (cm), 'Height' (cm), and 'N' (ind./ha).

  • Output should be a numeric vector of length equal to the number of tree records in 'x'