[R] Delete rows from matrix having at least one zero value

mentor_ mentor_ at gmx.net
Sun Nov 9 13:39:32 CET 2008


Hi,

I have a further question about matrix manipulation.

Imagine the following two matrices:
> test
     [,1] [,2] [,3] [,4]
[1,]    1    0    6    4
[2,]    2    5    7    5
[3,]    3    6    8    6
[4,]    4    0    0    0

> matrix(is.element(test,0), ncol=4)
      [,1]  [,2]  [,3]  [,4]
[1,] FALSE  TRUE FALSE FALSE
[2,] FALSE FALSE FALSE FALSE
[3,] FALSE FALSE FALSE FALSE
[4,] FALSE  TRUE  TRUE  TRUE

How can I apply the TRUE FALSE matrix to the 'test' matrix so that all rows 
having at least one zero value will be thrown out.

So after applying the TRUE FALSE matrix the test matrix shoud look like the
following:
     [,1] [,2] [,3] [,4]
[1,]    2    5    7    5
[2,]    3    6    8    6

Cheers
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