Delete the dimensions of an array which have only one level.
- an array (including a matrix).
x is an object with a
dim attribute (e.g., a matrix or
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.
drop1 which is used for dropping terms in models.
Documentation reproduced from R 2.15.3. License: GPL-2.