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.
Yes, agreed. Sometimes arrays seem like something bolted onto R that
is missing a lot of functionality.
Hadley
--
Assistant Professor / Dobelman Family
Hadley,
Your request is reminding me of the analysis of aray functions in Philip S
Abrams dissertation
http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-r-114.pdf
AN APL MACHINE
The section that starts on page 17 with this paragraph is the one that
immediately applies
C. The Standard Form for
Hadley,
I started to throw some functions that I needed to be extended to arrays
together as package arrayhelpers. If you consider that a good home for
the new functions, they would be more than welcome.
Currently I have the package at r-forge, but I wouldn't mind github,
either (so far I just
Your request is reminding me of the analysis of aray functions in Philip S
Abrams dissertation
http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-r-114.pdf
AN APL MACHINE
The section that starts on page 17 with this paragraph is the one that
immediately applies
C. The Standard Form for
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 /
Hadley Wickham hadley at rice.edu writes:
See functions flipud(), fliplr() in package 'matlab' (or 'pracma').
Those are the names of corresponding functions in MATLAB.
Hans Werner
Hi all,
Are there base functions that do the equivalent of this?
fliptb - function(x) x[nrow(x):1, ]
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 had...@rice.edu wrote:
Hi all,
Are there base functions that do the equivalent
Hadley,
Presumably for fliplr you meant ncol(x)
fliplr - function(x) x[, ncol(x):1]
Bill
On Dec 31, 2011, at 9:08 AM, Hadley Wickham 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]
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