From: <oarabile_at_stams.strath.ac.uk>

Date: Tue, 08 May 2007 09:50:43 +0100

R-help_at_stat.math.ethz.ch 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 Tue 08 May 2007 - 11:53:21 GMT

Date: Tue, 08 May 2007 09:50:43 +0100

I have a very large matrix with columns that have some of their entries as zero

[,1] [,2] [,3] [,4]

[,1] 0 2 0 0[,2] 1 3 0 3

[,3] 2 0 3 5

[,4] 0 4 0 0

and what to get the minimum number from each column but that number should not be zero. If I use apply (a,2,min) I will get a vector of zeros as the minimum but what I want it for example from column 1 I should get 1 i.e for all the matrix I should get a vector (1,2,3,3). I wonder if someone can give an idea on how to go about it.

thanks in advance for your help.

Oarabile

R-help_at_stat.math.ethz.ch 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 Tue 08 May 2007 - 11:53:21 GMT

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