R help - Jan 2014 - convert real valued matrix to binary matrix

Hi:

I am trying to analyze an yeast gene expression data

http://arep.med.harvard.edu/biclustering/yeast.matrix

I need to convert the real-valued data matrix to a binary (0,1)
matrix. Is there any package available? How can it be done?

Thanks:

John

Why? You lose information in doing so, do you not?

I also think you might do better posting to the Bioconductor list, as
they are specifically concerned with such matters.

Cheers,
Bert

Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374

"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
H. Gilbert Welch




On Thu, Jan 9, 2014 at 11:56 AM, email <email8889 at gmail.com>
wrote:
> Hi:
>
> I am trying to analyze an yeast gene expression data
>
> http://arep.med.harvard.edu/biclustering/yeast.matrix
>
> I need to convert the real-valued data matrix to a binary (0,1)
> matrix. Is there any package available? How can it be done?
>
> Thanks:
>
> John
>
> ______________________________________________
> 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.

On 01/10/2014 06:56 AM, email wrote:
> Hi:
>
> I am trying to analyze an yeast gene expression data
>
> http://arep.med.harvard.edu/biclustering/yeast.matrix
>
> I need to convert the real-valued data matrix to a binary (0,1)
> matrix. Is there any package available? How can it be done?
>
Hi John,
It looks like you have been told to perform dichotomous clustering on 
the yeast data from Tavazoie et al. 1999. You should probably look more 
closely at the cutoff expression level you are to use and think about 
creating a new matrix of logical (0,1) values using a logical condition. 
This may be as much help as you will get on the list for this sort of 
request.

Jim