cols_l: Column lens

In lenses: Elegant Data Manipulation with Lenses

Description

Create a lens into a set of columns

Usage

cols_l(cols, drop = FALSE)

Arguments

cols	the columns to focus on
drop	whether or not to drop dimensions with length 1

Examples

x <- matrix(1:4, ncol = 2)
colnames(x) <- c("first", "second")
x

view(x, cols_l(1))
view(x, cols_l("second"))
set(x, cols_l(1), c(20,40))

lenses documentation built on May 2, 2019, 8:51 a.m.