prepare_data {bigstep}  R Documentation 
Data preparation
Description
Create an object of class big
which is needed to perform the selection
procedure.
Usage
prepare_data(
y,
X,
type = "linear",
candidates = NULL,
Xadd = NULL,
na = NULL,
maxp = 1e+06,
verbose = TRUE
)
Arguments
y 
a numeric vector of dependent (target) variable. 
X 
a numeric matrix or an object of class 
type 
a string, type of the regression model you want to fit. You can
use one of these: 
candidates 
a numeric vector, columns from 
Xadd 
a numeric matrix, additional variables which will be included in
the model selection procedure (they will not be removed in any step). If

na 
a logical. There are any missing values in 
maxp 
a numeric. The matrix 
verbose 
a logical. Set 
Details
The function automatically removes observations which have missing
values in y
. Type browseVignettes("bigstep")
for more
details.
Value
An object of class big
.
Examples
X < matrix(rnorm(20), ncol = 4)
y < X[, 2] + rnorm(5)
data < prepare_data(y, X)