Description Usage Arguments Value Author(s) See Also Examples
Finds all unordered combinations of k
elements from vector
v
.
1 | combs(v,k)
|
v |
Any numeric vector |
k |
Number of elements to choose from vector |
combs(v,k)
(where v
has length n
) creates a matrix with
n!/((n-k)! k!) (n
choose k
) rows
and k
columns containing all possible combinations of n
elements
taken k
at a time.
Jarek Tuszynski (SAIC) jaroslaw.w.tuszynski@saic.com
I discovered recently that R packages already have two functions with
similar capabilities:
combinations
from gTools package and
Also similar to Matlab's nchoosek
function (http://www.mathworks.com/access/helpdesk/help/techdoc/ref/nchoosek.html)
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