check_monotonicity {TapeS}

monotonicity check for taper curve

Description

monotonicity check for taper curve

Usage

check_monotonicity(obj, Rfn = NULL)

Arguments

obj

object of class 'tprTrees'

Rfn

Rfn setting for residuals error matrix, defaults to list(fn="sig2"), see resVar.

Details

Taper curves are required to decrease monotonically. To avoid the evaluation of non-monotone taper curves, a check is done through the constructor function and an indicator (monotone) is set for each tree stored inside the tprTrees-class. As the data has been check on validity before this function is applied, we can use the tpr*-functions to evaluate the taper curve and its monotonicity. The check is done via comparison of the expected diameters along the trunk in 1m-steps and its sorted (monotonically decreasing) version using identical.

Value

vector of logicals, same length as spp.