make_assignments: Make a list of assignments, applying many functions to many...

In rquery: Relational Query Generator for Data Manipulation at Scale

Make a list of assignments, applying many functions to many columns.

Description

Make a list of assignments, applying each function to each column named. Intended to be used as an argument in extend_se() or project_se().

Usage

make_assignments(columns, funs, ..., sep = "_", prefix = TRUE)

Arguments

columns	character, vector of column names to take values from.
funs	character, names of functions to apply.
...	not used, forced later parameters to bind by name
sep	character, naming separator
prefix	logical, if TRUE place function names prior, else after in results.

Examples

assignments <- make_assignments(c('x', 'y'), c('mean', med = 'median'))
print(assignments)
ops <- mk_td('d', c('x', 'y')) %.>% project_se(., assignments)
cat(format(ops))

rquery documentation built on Aug. 20, 2023, 9:06 a.m.