Conversion to a matrix.

to.matrix attempts to convert any data to a row matrix. In particular, data frames are converted by as.matrix, (numeric) vectors are converted to a single row/column matrix, according to the rowMatrix argument.

to.matrix(x, rowMatrix = TRUE)

Arguments

x	data to convert to a matrix
rowMatrix	if TRUE, numeric vectors are converted to a single row matrix, if FALSE, they get converted to a single column matrix

Value

matrix

Examples

to.matrix(1:3)
#>      [,1] [,2] [,3]
#> [1,]    1    2    3
to.matrix(1:3,rowMatrix=FALSE)
#>      [,1]
#> [1,]    1
#> [2,]    2
#> [3,]    3
to.matrix(iris[1:3,1:4])
#>   Sepal.Length Sepal.Width Petal.Length Petal.Width
#> 1          5.1         3.5          1.4         0.2
#> 2          4.9         3.0          1.4         0.2
#> 3          4.7         3.2          1.3         0.2
to.matrix(matrix(1:4,2))
#>      [,1] [,2]
#> [1,]    1    3
#> [2,]    2    4