unwrap.matrix: Convert between a matrix and a long-format data.frame
In Spiritspeak/skMisc: Sercan Kahveci's Miscellaneous Functions

unwrap.matrix

R Documentation

Convert between a matrix and a long-format data.frame

Description

Convert between a matrix and a long-format data.frame

Usage

unwrap.matrix(x)

rewrap.matrix(x, na.value = NA)

Arguments

`x`	In case of `unwrap.matrix()`, a matrix to unwrap; in case of `rewrap.matrix`, a data.frame with three columns, respectively representing the row name, column name, and value.
`na.value`	Which value to use in the matrix for elements not provided in `x`

Value

unwrap.matrix() returns a data.frame with three columns: row and col indicating the row and column names, and value indicating the respective value in the matrix. If no row or column names are available, the row or column number is used instead.

rewrap.matrix() returns a matrix.

Author(s)

Sercan Kahveci

Examples

mymatrix <- matrix(1:40,ncol=8,nrow=5)
unwrap.matrix(mymatrix)
rewrap.matrix(unwrap.matrix(mymatrix))

carmatrix <- as.matrix(mtcars)
unwrap.matrix(carmatrix)
rewrap.matrix(unwrap.matrix(carmatrix))

Spiritspeak/skMisc documentation built on April 12, 2025, 5:40 a.m.