[R] sorting data frame

[Claudia Tebaldi]

x.sorted_x[order(x$var3),]

if you want it in increasing order or

x.sorted_x[rev(order(x$var3)),]

if you want it in decreasing order

On Fri, 4 Jan 2002, Patrick E. McKnight wrote:

> Greetings,
> 
> I hope this isn't obvious but I've read through the FAQ and the various 
> other R/S books I have and I cannot, for the life of me, figure out how 
> to sort a data frame by a specific variable.  Suppose I have a four 
> variable data.frame x and the variables are var1, var2, var3, var4.  I 
> want to sort on say var3 simply for display purposes.  How can this be 
> accomplished?  Thanks in advance for any hints, RTFM (the exact one 
> please), or any other useful pointers.
> 
> BTW, I'm using version 1.4 on Linux-Mandrake FWIW.
> 
> 
> -- 
> ________________________________________________________________________
> 
> Cheers,
> 
> Patrick
> 
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claudia tebaldi                                  NCAR  RAP
project scientist                                P.O. Box 3000
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