Test if an object is multi-dimensional
is_multidim.RdReturns TRUE if an object is a matrix or data
frame with at least 2 rows and at least 2 columns,
FALSE otherwise
Examples
# general matrix (nrow>1, ncol>1)
is_multidim(matrix(1:9, 3, 3)) # TRUE
#> [1] TRUE
# general data frame
is_multidim(iris) # TRUE
#> [1] TRUE
# vector
is_multidim(1:5) # FALSE
#> [1] FALSE
# factor
is_multidim(iris$Species) # FALSE
#> [1] FALSE
# one row matrix
is_multidim(matrix(1:5, 1, 5)) # FALSE
#> [1] FALSE
# one column matrix
is_multidim(matrix(1:5, 5, 1)) # FALSE
#> [1] FALSE