Replace: Create an Implementation of [<- For Custom Matrix-Like Types
In privefl/bigstatsr: Statistical Tools for Filebacked Big Matrices

Replace

R Documentation

Create an Implementation of [<- For Custom Matrix-Like Types

Description

replace is a function that converts different index types such as negative integer vectors or logical vectors passed to the ⁠[<-⁠ function as i (e.g. X[i]) or i and j (e.g. X[i, j]) into positive integer vectors. The converted indices are provided as the i parameter of replace_vector or i and j parameters of replace_matrix to facilitate implementing the replacement mechanism for custom matrix-like types. Single values are recycled to match the replacement length.

Usage

Replace(replace_vector, replace_matrix)

Arguments

`replace_vector`	A function in the form of `⁠function(x, i, value)⁠` that replaces a vector subset of `x` based on a single vector of indices `i` with the values in `value` and returns `x`, invisibly.
`replace_matrix`	A function in the form of `⁠function(x, i, j, value)⁠` that replaces a matrix subset of `x` based on two vectors of indices `i` and `j` with the values in `value` and returns `x`, invisibly.