stand

Standardize each column of both of the matrices with mean and standard deviation derived from the first matrix.

Usage

stand(x, xx)

Arguments

x

matrix

xx

another matrix, with same number of columns as x

Value

list of standardized matrices x and xx along with scaling information — mean and standard deviation of original columns

Examples

stand(matrix(1:6, ncol=3), matrix(1:6, ncol=3))
#> $x
#>            [,1]       [,2]       [,3]
#> [1,] -0.7071068 -0.7071068 -0.7071068
#> [2,]  0.7071068  0.7071068  0.7071068
#> attr(,"scaled:center")
#> [1] 1.5 3.5 5.5
#> attr(,"scaled:scale")
#> [1] 0.7071068 0.7071068 0.7071068
#> 
#> $xx
#>            [,1]       [,2]       [,3]
#> [1,] -0.7071068 -0.7071068 -0.7071068
#> [2,]  0.7071068  0.7071068  0.7071068
#> attr(,"scaled:center")
#> [1] 1.5 3.5 5.5
#> attr(,"scaled:scale")
#> [1] 0.7071068 0.7071068 0.7071068
#> 
#> $mean
#> [1] 1.5 3.5 5.5
#> 
#> $sd
#> [1] 0.7071068 0.7071068 0.7071068
#>