[R] locating minimum value in matrix

Chuck Cleland ccleland at optonline.net
Sun Mar 16 02:30:15 CET 2008


On 3/15/2008 7:47 PM, Gonçalo Ferraz wrote:
> Hi,
> 
> I have a matrix BEE and want to find the row and column numbers of  
> the minimum value in that matrix.
> The command
> 
> which(BEE==min(BEE))
> 
> returns only one value which, I take, is the position of the minimum  
> in a vector with as many elements as the matrix.
> 
> Is there a quick and simple way of getting row and column numbers?

   See the second argument to which().

which(BEE==min(BEE), arr.ind=TRUE)

> Thanks,
> 
> Gonçalo
> 
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> 
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Chuck Cleland, Ph.D.
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