heightEstimateForBTOP_D: Estimate tree height for a broken top tree when DBH, inside...

Description Usage Arguments Value Author(s) See Also

View source: R/heightEstimateForBTOP.R

Description

This is the second function to estimate a tree's height for a broken top tree. A tree's height is esimated using height of the broken top (heightBTOP), inside bark diameter at broken height (DIBBTOP) and DBH. Specifically, this function guesses the tree height, computes inside bark diameter at broken height (heightBTOP) using a taper equation, compares it to an observed inside bark diameter and chooses the tree height that has closest value of inside bark diameter at broken. For the broken top trees that have field projected height, total tree height also can be estimated using heightEstimateForBTOP_H.

Usage

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heightEstimateForBTOP_D(heightBTOP, DIBBTOP, DBH,
  taperEquationForm = "KBEC", FIZorBEC, species, volMultiplier = 1,
  SASOriginal = FALSE)

Arguments

heightBTOP

numeric, Height of the broken top.

DIBBTOP

numeric, Diameter inside bark at the height of the broken top.

DBH

numeric, DBH of the tree, Must be given when BTOP is D.

taperEquationForm

character, Specifies which taper equaiton will be used to estimate tree height, currently supports KBEC, KBECQCI, KFIZ. If missing, the function uses KBEC as default.

FIZorBEC

character, Specifies which FIZ or BEC (depends on taperEquationForm) zones the tree located.

species

character, Tree species.

volMultiplier

numeric, Volume adjustment. If missing, 1 will be used.

SASOriginal

logical, Specifies whether the original sas algrithm will be used for guess tree height If missing, FALSE will be used.

Value

Total tree height

Author(s)

Yong Luo

See Also

heightEstimateForBTOP_H


bcgov/BCForestGroundSample documentation built on May 25, 2019, 3:21 p.m.