behavr (version 0.3.2)

meta: Retrieve and set metadata

Description

This function returns the metadata from a behavr table.

Usage

meta(x)
setmeta(x, new)

Value

a data.table representing the metadata in x

Arguments

x

behavr object

new

a new metadata table

See Also

• behavr -- the documentation of the behavr object

• xmv -- to join metavariables

Examples

set.seed(1)
met <- data.table::data.table(id = 1:5,
                              condition = letters[1:5],
                              sex = c("M", "M", "M", "F", "F"),
                              key = "id")
data <- met[,
            list(t = 1L:100L,
                 x = rnorm(100),
                 y = rnorm(100),
                 eating = runif(100) > .5 ),
             by = "id"]

d <- behavr(data, met)
## show metadata
meta(d)
# same as:
d[meta = TRUE]
## set metadata
m <- d[meta = TRUE]
# only id > 2 is kept
setmeta(d, m[id < 3])
meta(d)