extract parameter of bark functions according to Altherr et al. 1974 - 1979
RiPar(ba = NULL, fn = NULL, par = NULL)
tree species code; returned by BaMap
function number; see details
parameter; see details
Function extracts the parameter according to tree species, function type and parameter number. There are three parameters in each of four functions. The first one refers to butt log (dt. Erdstamm), the second to middle log (dt. Mittelstammstück), the third to the top log (dt. Gipfelstammstück) and the fourth to the complete stem (dt. Gesamtstamm).