[R] number of an element in a matrix

Brandon Invergo brandon at brandoninvergo.com
Mon Aug 11 22:50:08 CEST 2008


You can use the length() and which() functions for that:

 > length(which(m == 2))

cheers,
brandon


rostam shahname wrote:
> Hi, I wonder if there is any function which gives the number of times which
> an element is repeated in the matrix. Let say there is a matrix, I would
> like to find out how many times number 2 has been repeated in the matrix, or
> in other words, how many elements of the matrix are equal 2.
> Thanks for your help,
> Rostam
>
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