R: Check whether a square matrix is symmetric

Check whether a square matrix is symmetric {Rfast} | R Documentation

## Check whether a square matrix is symmetric

### Description

Check whether a square matrix is symmetric.

### Usage

    is.symmetric(x)

### Arguments

`x` | A square matrix with data.

### Details

Instead of going through the whole matrix, the function will stop if the first disagreement is met.

### Value

A boolean value, TRUE of FALSE.

### Author(s)

Manos Papadakis

R implementation and documentation: Manos Papadakis <papadakm95@gmail.com>.

### See Also

`cholesky, cora, cova`

### Examples

    x <-matrix( rnorm( 100 * 400), ncol = 400 )
    s1 <- cor(x)
    is.symmetric(s1)
    x <- x[1:100, ]
    is.symmetric(x)

    x<-s1<-NULL

[Package Rfast version 2.0.0 Index]