splitstackshape (version 1.2.0)

merged.stack: Take a list of stacked data.tables and merge them

Description

A wrapper around the Stacked function to merge the resulting list into a single data.table.

Usage

merged.stack(data, id.vars, var.stubs, sep,
    keep.all = TRUE, ...)

Arguments

data

The input data.frame.

id.vars

The columns to be used as "ID" variables.

var.stubs

The prefixes of the variable groups.

sep

The character that separates the "variable name" from the "times" in the source data.frame.

keep.all

Logical. Should all the variables in the source data.frame be kept (keep.all = TRUE) or only those which comprise the id.vars and split data from the var.stubs (keep.all = FALSE).

...

Further arguments to NoSep in case the separator is of a different form.

Value

• A merged data.table.

See Also

Stacked, Reshape

Examples

set.seed(1)
mydf <- data.frame(id_1 = 1:6, id_2 = c("A", "B"),
                   varA.1 = sample(letters, 6),
                   varA.2 = sample(letters, 6),
                   varA.3 = sample(letters, 6),
                   varB.2 = sample(10, 6),
                   varB.3 = sample(10, 6),
                   varC.3 = rnorm(6))
mydf
merged.stack(mydf, id.vars = c("id_1", "id_2"),
             var.stubs = c("varA", "varB", "varC"),
             sep = "\\.")

rm(mydf)