mapdims: Map over matrix dimensions separately in a single function...

In robertschnitman/afp: Applied Functional Programming

Description

Map over matrix dimensions separately in a single function call

Usage

mapdims(f, x, ...)
mapc(f, x)
mapr(f, x)

Arguments

f	A function to apply to the 2D dataset.
x	A dataset, such as an array or data frame.
...	Arguments passed to the f.

Details

Apply function over dimensions and save the column- and row-wise results separately in a list with 'mapdims()'; convenient 'apply()' abbreviations with 'mapc()' and 'mapr()'.

Value

List for mapdims(). Two elements: rowwise for the row-wise computations, and colwise for the column-specific results. Output is array for 'mapc()' and 'mapr()'

See Also

https://github.com/robertschnitman/afp, apply

Examples

mapdims(median, mtcars)
mapdims(mean, airquality, na.rm = TRUE)
mapc(median, mtcars)
mapr(median, mtcars) 

robertschnitman/afp documentation built on Aug. 9, 2020, 9:46 a.m.