drop

R Base 3.6.2

Delete the dimensions of an array which have only one level.

Syntax

drop(x)

Arguments

Parameter	Description
`x`	an array (including a matrix).

Return Value

If x is an object with a dim attribute (e.g., a matrix or array), then drop returns an object like x, but with any extents of length one removed. Any accompanying dimnames attribute is adjusted and returned with x: if the result is a vector the names are taken from the dimnames (if any). If the result is a length-one vector, the names are taken from the first dimension with a dimname. Array subsetting ([) performs this reduction unless used with drop = FALSE, but sometimes it is useful to invoke

Examples

Example

# NOT RUN {
dim(drop(array(1:12, dim = c(1,3,1,1,2,1,2)))) # = 3 2 2
drop(1:3 %*% 2:4)  # scalar product
# }

drop

Syntax

Arguments

Return Value

Examples

See Also