ldat (version 0.3.3)

ldat: Create an ldat object

Description

This function creates an ldat object, which behaves similar to a data.frame except that its columns are lvec. This allows and ldat to have an arbitrary large number of rows without running into memory problems.

Usage

ldat(...)
is_ldat(x)

Arguments

...

these arguments are of either the form `tag = value' or `value'. Each argument becomes a column in the ldat. All columns are required to have the same length.

x

object for which to check if it is of type ldat

Value

An object of type ldat. This object is basically a list with lvec objects.

Details

Each of the arguments of ldat is converted to an lvec when it isn't already and lvec using calls to as_lvec. The arguments are required to all have the same length (unlike data.frame).

Examples

# NOT RUN {
# Create ldat object from r-objects
a <- ldat(id = 1:20, x = letters[1:20], y = rnorm(20))
# this is identical to
a <- ldat(id = as_lvec(1:20), x = as_lvec(letters[1:20]), 
    y = as_lvec(rnorm(20)))

# }