[R] number of zeros in a matrix -row by row

[Luc Villandre]

Hi,

Try

/rowSums(M==0)/

This should work just fine.

Cheers,

Luc

onyourmark wrote:
> Hi. I have an n x m matrix M some of who's entries are zeros. I want to know
> how many zeros there are in each row    -perhaps stored in a 1 x n vector
> which lists the number of zeros for each row of M.
>
> Before I had a vector V and I was able to get the number of zeros in V by
> doing length(V[ V==0]) but when I try something similar for M, like M[ M==0]
> it creates a vector not a matrix and so this does not work. Does anyone have
> a solution to this?
>
> Thank you.
>