convert.stress.level {ALTopt} | R Documentation |
Coding and decoding stress level
Description
Convert the stress levels from the actual levels to standardized levels, and vice versa.
Usage
convert.stress.level(lowStLv, highStLv, actual = NULL, stand = NULL)
Arguments
lowStLv |
a numeric vector containing the actual lowest stress level of each stress variable in design region. |
highStLv |
a numeric vector containing the actual highest stress level of each stress variable in design region. |
actual |
a data frame or numeric vector containing the design points in actual units. |
stand |
a data frame or numeric vector containing the design points in standardized units. |
Value
When actual
is provided, the function converts it to the
standardized units and when stand
is provided, the function converts
it to the actual units.
Examples
## Not run:
# Generating D optimal design in coded unit.
Design <- altopt.rc(optType = "D", N = 100, tc = 100, nf = 2, alpha = 1,
formula = ~x1 + x2 + x1:x2, coef = c(0, -4.086, -1.476, 0.01))
# Transform the coded unit to actual stress variable's level.
convert.stress.level(lowStLv = c(34.834, 4.094), highStLv = c(30.288, 4.5),
stand = Design$opt.design.rounded)
# Transform the actual stress level to coded units.
use <- c(38.281, 3.219)
convert.stress.level(lowStLv = c(34.834, 4.094), highStLv = c(30.288, 4.5),
actual = use)
## End(Not run)
[Package ALTopt version 0.1.2 Index]