decrease | R Documentation |
This coefficient expresses the ratio between the diameter (or circumference) at mid-height of the bole and the diameter (or circumference) measured at breast height.
decrease(middle, breast)
middle |
numeric, the diameter or circumference at middle height. |
breast |
numeric, the diameter or circumference at breast height. |
Both middle
and breast
arguments should be of the
same type (either diameter or circumference). Not mixture.
A vector of decrease coefficients.
decrease(30, 120)
decrease(middle = 40, breast = 90)
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