UD_cum_stage {UncDecomp}

Stage-wise uncertainty based on cumulative uncertainty

Description

This function performs uncertainty decomposition based on the cumulative uncertainty.

Usage

UD_cum_stage(data, var_name, stages = setdiff(names(data), var_name),
  U = U_var)

Arguments

data

a data frame containing models(factor or character) for each stages and the variable of interest(numeric). data should contain all combinations of models.

var_name

the name of the variable of interest

stages

names of the stages in the modeling chain. should be ordered by the order of the modeling chain

U

a function that returns uncertainty such as range and variance of a given numeric vector. This package have built-in uncertainty functions U_var(), U_mad() and U_range(). Default is U_var().

Value

stage-wise uncertainties(UD_stage class)

Examples

set.seed(0)
stage1 <- LETTERS[1:3]
stage2 <- LETTERS[1:2]
stage3 <- LETTERS[1:4]
y <- rnorm(3*2*4)
data <- expand.grid(stage1=stage1,
                    stage2=stage2,
                    stage3=stage3)
stages <- names(data)
data <- cbind(data, y)

UD_cum_stage(data, "y", stages, U_var)
UD_cum_stage(data, "y", stages, U_mad)
UD_cum_stage(data, "y", stages, U_range)