bigstatsr (version 1.6.1)

as_scaling_fun: Scaling function creator

Description

Convenience function to create a function to be used as parameter fun.scaling when you want to use your own precomputed center and scale.

Usage

as_scaling_fun(center.col, scale.col, ind.col = seq_along(center.col))

Value

A function to be used as parameter fun.scaling.

Arguments

center.col

Vector of centers corresponding to ind.col.

scale.col

Vector of scales corresponding to ind.col.

ind.col

Column indices for which these are provided.

Examples

fun.scaling <- as_scaling_fun(1:6, 2:7)
fun.scaling(NULL, NULL, 1:3)  # first two parameters X and ind.row are not used here
fun.scaling2 <- as_scaling_fun(1:6, 2:7, ind.col = 6:1)
fun.scaling2(NULL, NULL, 1:3)


X <- big_attachExtdata()
sc <- big_scale()(X)
fun <- as_scaling_fun(center = sc$center, scale = sc$scale)
obj.svd <- big_randomSVD(X, fun.scaling = fun)
obj.svd2 <- big_randomSVD(X, fun.scaling = big_scale())
all.equal(obj.svd, obj.svd2)