[R] sort (all columns of) a matrix

[Don McKenzie]

Untested, but

a.sorted <- apply(a,sort,2)

?


Kajan Saied wrote:
> Dear R-Help Team,
> 
> I have been trying to sort (all columns of) a matrix:
> 
>> a<-matrix(a<-c(1,3,4,6,6,4,6,56,4,64,86,39,4,2),length(a),2)
>> a
>       [,1] [,2]
>  [1,]    1    1
>  [2,]    3    3
>  [3,]    4    4
>  [4,]    6    6
>  [5,]    6    6
>  [6,]    4    4
>  [7,]    6    6
>  [8,]   56   56
>  [9,]    4    4
> [10,]   64   64
> [11,]   86   86
> [12,]   39   39
> [13,]    4    4
> [14,]    2    2
> I would like to have the matrix sorted and the output should again be *a
> matrix* with nrow=length(a) and ncol=2 just like (a) but only
> sorted. Whatever I try (be it sort(), order()...) I receive a vector of
> length(a)*2...
> 
> Could you please help me?
> 
> Best regards,
> 
> kajan
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> 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.

-- 
Don McKenzie
Research Ecologist
Pacific Wildland Fire Sciences Lab
US Forest Service

Affiliate Professor
College of Forest Resources and CSES Climate Impacts Group
University of Washington

phone: 206-732-7824
cell: 206-321-5966
dmck at u.washington.edu