decreaseMetric {dendrometry}

Metric scrolling or decay

Description

The average metric decay expresses the difference, in centimeters per meter, between the diameter (or circumference) at breast height and its diameter at mid-height of a stem related to the difference between the height at mid-height and that at breast height.

Usage

decreaseMetric(dmh, dbh, mh, bh = 1.3)

Arguments

dmh

numeric, the diameter at middle height in centimeter (cm).

dbh

numeric, the diameter at breast height in centimeter (cm).

mh

numeric, the middle (or cut) height in meter (m).

bh

Either a numeric value standing for the breast height in meter (m) of all trees or a numeric vector standing for the breast height of each tree. Default is 1.3.

Value

Metric decay

See Also

reducecoef

Examples

decreaseMetric(dmh = 40, dbh = 90, mh = 7)
decreaseMetric(45, 85, 9)