[R] Conversion to Binary (base2)

[Prof Brian Ripley]

See also sfsmisc:as.intBase .

On Thu, 25 Sep 2008, Duncan Murdoch wrote:

> On 9/25/2008 3:33 PM, Jason Thibodeau wrote:
>> Hello,
>> 
>> Is there a simple way to take an input, and convert the decimal integers to
>> binary? In this case, I have a CSV file, and I need to convert the first
>> column of every line to binary.
>
> Yes, the intToBits function does what you want.  It works with raw vector 
> output and integer vector input, so you need a few type conversions, but 
> essentially this is simple:
>
>> x <- 123
>> paste(rev(as.integer(intToBits(as.integer(x)))), collapse="")
> [1] "00000000000000000000000001111011"
>
> Duncan Murdoch
>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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