selection_helpers: Selection helpers

In TimTeaFan/dplyover: Create columns by applying functions to vectors and/or columns in 'dplyr'

Description

dplyover provides three kinds of selection helpers which are intended for use in all functions that accept a vector as argument (that is over() and crossover() as well as their variants, see here for a full list of the over-across function family).

Helpers which select string parts of the column names (of the underyling data):

• cut_names() removes a specified pattern.

• extract_names() extracts a specified pattern.

Helpers which select values of a variable:

• dist_values() returns all distinct values.

• seq_range() returns the sequence between the range() of a variable.

A helper function that evaluates a glue specification as variable

• .() evaluates an interpolated string as symbol

TimTeaFan/dplyover documentation built on Sept. 27, 2021, 3:14 p.m.