flatten: Flatten list

In AkselA/R-ymse: Ymse (Various)

Description

Flatten a (nested) list to a list of its leaves

Usage

flatten(x, flatten.df = FALSE, keep.order = TRUE)

Arguments

x	a list object
flatten.df	should data.frames also be flattened?
keep.order	keep the order of the original list, same as seen when using str

Details

The nodes of the supplied list is traversed from root to leaf and successively unlisted until no lists are left (except possibly for data.frames).

Value

A single level list of x's leaves.

Examples

xl <- list(
  O=NA, 
  R=list(
    j=1:3,
    h="(a)",
    q=data.frame(
      a=1:2, 
      b=c("A, K", "B, L"),
      stringsAsFactors=FALSE
    )
  ), 
  N=1,
  L=FALSE
)

flatten(xl, flatten.df=TRUE, keep.order=FALSE)
flatten(xl, flatten.df=TRUE, keep.order=TRUE)
str(xl)

AkselA/R-ymse documentation built on March 21, 2020, 9:52 a.m.