| cbind {spam} | R Documentation |
Take a sequence of vector, matrix or spam object arguments and
combine by columns or rows, respectively.
cbind.spam(..., deparse.level = 0) rbind.spam(..., deparse.level = 0)
... |
vectors, matrices or spam objects. See Details and Value |
deparse.level |
for compatibility reason here. Only 0 is implemented. |
rbind and cbind are not exactly symmetric in how
the objects are processed. The former is essentially an concatenation
of the slots due to the sparse storage format. Different types of
inputs are handled differently. The former calls a
Fortran routine after the input has been coerced to spam
objects.
Only two objects at a time are processed. If more than two are
present, a loop concatenates them successively.
A method is defined for a spam object as first argument.
a spam object combining the ... arguments
column-wise or row-wise. (Exception: if there are no inputs or all
the inputs are NULL, the value is NULL.)
Reinhard Furrer
x <- cbind.spam(1:5,6) y <- cbind(x, 7) # for some large matrices the following might be slightly faster: t( cbind( t(x), t(x))) ## Not run: # Method is only defined for the first argument: cbind(diag(2),diag.spam(2)) ## End(Not run)