genMixFormula {simstudy}

Generate Mixture Formula

Description

Generates a mixture formula from a vector of variable names and an optional vector of probabilities.

Usage

genMixFormula(vars, probs = NULL, varLength = NULL)

Arguments

vars

Character vector/list of variable names.

probs

Numeric vector/list of probabilities. Has to be same length as vars or NULL. Probabilities will be normalized if the sum to > 1.

varLength

If vars is of length one and varLength is set to any integer > 0, vars will be interpreted as array of length varLength and all elements will used in sequence.

Value

The mixture formula as a string.

Examples

genMixFormula(c("a", "..b[..i]", "c"))
genMixFormula(c("a", "..b", "c"), c(.2, .5, .3))

# Shorthand to use external vectors/lists
genMixFormula("..arr", varLength = 5)