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

From: mentor_ <mentor__at_gmx.net>
Date: Sun, 09 Nov 2008 04:39:32 -0800 (PST)

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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Received on Sun 09 Nov 2008 - 19:24:32 GMT

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