Message-ID: <CACk-te3e0xjCOKHLp0kMFptc__4gfg3QVXJwhq4RxTbaNz2OvQ@mail.gmail.com>
Date: 2011-12-31T19:40:36Z
From: Bert Gunter
Subject: Base function for flipping matrices
In-Reply-To: <CABdHhvEMc_TB5J8sLKn2ZST++wzeey=1iODVZdDiiak=krnFWQ@mail.gmail.com>
Hadley:
Dunno.
But if not, it seems to me that it should be added as an array method
to ?rev with an argument specifying which indices to rev() over.
Cheers,
Bert
On Sat, Dec 31, 2011 at 7:08 AM, Hadley Wickham <hadley at rice.edu> wrote:
> Hi all,
>
> Are there base functions that do the equivalent of this?
>
> fliptb <- function(x) x[nrow(x):1, ]
> fliplr <- function(x) x[, nrow(x):1]
>
> Obviously not hard to implement (although it needs some more checks),
> just wondering if it had already been implemented.
>
> Hadley
>
> --
> Assistant Professor / Dobelman Family Junior Chair
> Department of Statistics / Rice University
> http://had.co.nz/
>
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--
Bert Gunter
Genentech Nonclinical Biostatistics
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