crosspoints: Calculate crosspoints

In optedr: Calculating Optimal and D-Augmented Designs for Single- and Multi-Factor Models

Calculate crosspoints

Description

Given the parameters for augmenting a design, this function calculates the crosspoints in the efficiency function that delimit the candidate points region

Usage

crosspoints(val, sens, gridlength, tol, xmin, xmax)

Arguments

val	Efficiency value to solve in the curve relationing the space of the design and efficiency of new design
sens	Sensitivity function of the design for the model
gridlength	Number of points in the initial grid used to bracket roots
tol	Tolerance for root refinement passed to uniroot
xmin	Minimum of the space of the design
xmax	Maximum of the space of the design

Value

A numeric vector of crosspoints that define the candidate points region

optedr documentation built on June 23, 2026, 5:07 p.m.