build_covform: Build a object or formula to use with covset.

In kylebmetrum/dmutate: Mutate Data Frames with Random Variates

Description

build_covform formulates then parses a formula that can be used in a covset. build_covobj just assembles the object directly.

Usage

build_covform(var, dist, args, lower = NULL, upper = NULL, by = NULL,
  envir = parent.frame())

build_covobj(var, dist, args, upper = NULL, lower = NULL, by = NULL,
  envir = parent.frame())

Arguments

var	variable name, character
dist	distribution function name
args	character vector of arguments for dist
lower	lower limits for var
upper	upper limits for var
by	grouping variable
envir	environment for resolving symbols in expressions

Details

When length of var is greater than one, both lower and upper must be named vectors when specifiation is made. However, it is acceptable to specify nothing or to use unnamed limits when the lenght of var is 1.

Examples

build_covform("WT", "rnorm", c("mu = 80", "sd = 40"), lower = 40, upper = 140)
build_covform("WT", "rnorm", "80,40", lower = 40, upper = 140)

build_covobj("WT", "rnorm", "80,40", lower = 40, upper = 140)

kylebmetrum/dmutate documentation built on May 20, 2019, 7:30 p.m.