arkhe (version 1.7.0)

seek: Search Rows/Columns by Name

Description

Searches rows/columns by name in an array-like object.

Usage

seek_columns(x, ...)
seek_rows(x, ...)
# S4 method for data.frame
seek_rows(x, select = NULL, ...)
# S4 method for data.frame
seek_columns(x, select = NULL, ...)

Value

An integer vector or NULL.

Arguments

x

An R object (should be a matrix or a data.frame).

...

Further arguments to be passed to select.

select

A function to be applied to the row/colum names (e.g. startsWith()). Must return a single integer or logical vector.

Author

N. Frerebeau

See Also

Other data preparation tools: append(), assign(), compact(), count(), detect(), discard(), get(), keep()

Examples

## Seek columns
seek_columns(iris, select = startsWith, prefix = "Sepal")

## Get columns
x <- get_columns(iris, select = startsWith, prefix = "Sepal")
head(x)