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FI (version 1.0)
ff: Factor form for the given volume
Description
This function provide correction for basic volume estimation using cylinder formulation $ v = DBH^2/4 \pi H$. Factor form is given by taking ratio between real volume and apparent volume.
Usage
ff(volume, dbh, height)
Arguments
volume
volume of a log, can be the output of
volume
dbh
diameter at breast height (1.3 meters from floor)
height
commercial height, length of stem or whatever length of log you used in your estimations of cylinder volume
Value
form factor ranging form 0-1 (numeric value)
References
http://wiki.awf.forst.uni-goettingen.de/wiki/index.php/Stem_shape