dim {spam} | R Documentation |
Retrieve or set the dimension of an spam
object.
# dim(x) # dim(x) <- value "dim<-.spam"(x,value)
x |
a spam matrix |
value |
A numeric two-vector, which is coerced to integer (by truncation). |
It is important to notice the different behavior of the replacement
method for ordinary arrays and spam
objects (see
‘Examples’). Here, the elements are not simply rearranged but
an entirely new matrix is constructed. If the new column dimension is
smaller than the original, the matrix is also cleaned (with
spam.option("eps")
as filter).
For the same operation as with regular arrays, use spam
dim
retrieves
the dimension
slot of the object. It is a vector
of mode integer
.
The replacemnt method changes the dimension of the object by
truncation or extension (with zeros).
Reinhard Furrer
dim
.
x <- diag(4) dim(x)<-c(2,8) x s <- diag.spam(4) dim(s) <- c(7,3) # any positive value can be used s <- diag.spam(4) dim(s) <- c(2,8) # result is different than x