taper {dyntaper} | R Documentation |
Returns the diameter or cross-sectional area at one or more hight levels.
taper(h, H, D, b, bh, area = FALSE)
h |
Height level(s), possibly a vector. |
H |
Tree total height. |
D |
Tree diameter at breast height (dbh). |
b |
Vector with the 5 parameters. |
bh |
Breast height. Typically 1.2, 1.3 or 1.4 m, or 4.5 ft. |
area |
If TRUE, returns cross-sectional areas, otherwise returns diameters. Default is FALSE. |
Diameter(s) at level(s) 'h
' if 'area
' is FALSE,
otherwise cross-sectional area(s).
Diameters or areas are either all outside bark, or all inside bark.
A dbh outside bark can be used with an inside-bark taper equation through
a substitution D -> k * D
, where k
is an outside to inside
bark conversion factor.
curve(taper(x, 32, 0.956*24, c(2.569, 0, 1.042, 0.3012, -1), 1.3), 0, 32)