base (version 3.3)

pos.to.env: Convert Positions in the Search Path to Environments

Description

Returns the environment at a specified position in the search path.

Usage

pos.to.env(x)

Arguments

x

an integer between 1 and length(search()), the length of the search path, or -1.

Details

Several R functions for manipulating objects in environments (such as get and ls) allow specifying environments via corresponding positions in the search path. pos.to.env is a convenience function for programmers which converts these positions to corresponding environments; users will typically have no need for it. It is primitive.

-1 is interpreted as the environment the function is called from.

This is a primitive function.

Examples

pos.to.env(1) # R_GlobalEnv
# the next returns the base environment
pos.to.env(length(search()))