From: Jorge Ivan Velez <jorgeivanvelez_at_gmail.com>

Date: Sun, 09 Nov 2008 14:42:17 -0500

R-help_at_r-project.org mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Sun 09 Nov 2008 - 19:45:46 GMT

Date: Sun, 09 Nov 2008 14:42:17 -0500

Dear mentor_,

Try also

yourmat <- matrix(c(

1, 0, 6, 4, 2, 5, 7, 5, 3, 6, 8, 6, 4, 0, 0, 0 ),ncol=4,byrow=TRUE)

yourmat[apply(yourmat,1,function(x) sum(x==0)<1),]

**HTH,
**
Jorge

On Sun, Nov 9, 2008 at 7:39 AM, mentor_ <mentor__at_gmx.net> wrote:

*>
**> 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
**> --
**> View this message in context:
**> http://www.nabble.com/Delete-rows-from-matrix-having-at-least-one-zero-value-tp20405964p20405964.html
**> Sent from the R help mailing list archive at Nabble.com.
**>
**> ______________________________________________
**> R-help_at_r-project.org mailing list
**> https://stat.ethz.ch/mailman/listinfo/r-help
**> PLEASE do read the posting guide
**> http://www.R-project.org/posting-guide.html
**> and provide commented, minimal, self-contained, reproducible code.
**>
*

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