Create individual data frame from a covset object

Description

Create individual data frame from a covset object

Usage

as_idata(.covset, .n)

Arguments

Value

An idata set data frame.

Examples

cov1 <- covset(Y ~ rbinomial(0.2), Z ~ rnorm(2,2))

as_idata(cov1, 10)

Build a object or formula to use with covset

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

Details

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

Value

A covobj object.

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)

Covobj and covset objects

Description

Covobj and covset objects

Create a set of covariates

Usage

new_covobj(x, envir = parent.frame(), ...)

## S3 method for class 'covobj'
print(x, ...)

## S4 method for signature 'covobj'
as.list(x, ...)

## S4 method for signature 'covset'
as.list(x, ...)

## S3 method for class 'covset'
print(x, ...)

covset(..., envir = parent.frame())

rvset(...)

as.covset(x)

Arguments

Details

rvset is an alias for covset.

Examples

obj <- new_covobj(Y[0,80] ~ rnorm(20,50))

obj

as.list(obj)

a <- Y ~ runif(0,1)
b <- Z ~ rbeta(1,1)

set <- covset(a,b)

set

as.list(set)

mutate a data frame, adding random variables.

Description

mutate a data frame, adding random variables.

Apply formulae to a data frame

Usage

dmutate(data, ...)

Arguments

Examples

idata <- data.frame(ID = 1:10)

dmutate(idata, y ~ rbinomial(0.5), wt ~ rnorm(mu,sd),
        envir = list(mu = 50, sd = 20))

Add random variates to a data frame

Description

Add random variates to a data frame

Usage

mutate_random(data, input, ...)

## S4 method for signature 'data.frame,formula'
mutate_random(data, input, ...)

## S4 method for signature 'data.frame,character'
mutate_random(data, input, envir = parent.frame(), ...)

## S4 method for signature 'data.frame,list'
mutate_random(data, input, ...)

## S4 method for signature 'data.frame,covset'
mutate_random(data, input, ...)

## S4 method for signature 'data.frame,covobj'
mutate_random(data, input, envir = parent.frame(), ...)

Arguments

Examples

data <- data.frame(ID=1:10, GROUP = sample(c(1,2,3),10,replace=TRUE))

mutate_random(data, AGE[40,90] ~ rnorm(55,50))
mutate_random(data, RE ~ rbeta(1,1) | GROUP)

e <- list(lower=40,upper=140,mu=100,sd=100)

egfr <- covset(EGFR[lower,upper] ~ rnorm(mu,sd))

mutate_random(data,egfr,envir=e)

Simulate from binomial distribution

Description

Wrapper for stats::rbinom() with trial size of 1.

Usage

rbinomial(n, p, ...)

rbern(n, p, ...)

Arguments

Details

The size of each trial is always 1.

Simulate from multivariate normal distribution

Description

Simulate from multivariate normal distribution

Usage

rmvnorm(n, mu, Sigma)

rlmvnorm(n, ...)

rmassnorm(n, ...)

rlmassnorm(n, ...)

Arguments

Details

rlmvnorm is a multivariate log normal.

rmassnorm and rlmassnorm simulate the multivariate normal using the MASS package.

Value

Returns a matrix of variates with number of rows equal to n and number of columns equal to length of mu.