[R] Find all numbers in a certain interval
niederlein-rstat at yahoo.de
Tue Dec 16 13:12:09 CET 2008
sorry, but it shouldn't be "different". The result should be the same but I was
looking if there is a method I can use...
# having a function defined like baptiste proposed:
function (interval, x)
(x > min(interval)) & (x < max(interval))
a <- rnorm(100)
# it's simply more human readable if I can write
which( isIn( c(-0.5, 0.5), a) )
# instead of
which( a > -0.5 & a < 0.5 )
Thanks to baptiste! So there is no method available doing this and I have to
define this by myself. That's all I wanted to know :-)
markleeds at verizon.net schrieb:
> hi: could you explain EXACTLY what you want to do with the dataframe
> because it shouldn't be that different ?
> On Tue, Dec 16, 2008 at 5:09 AM, Antje wrote:
>> Hi all,
>> I'd like to know, if I can solve this with a shorter command:
>> a <- rnorm(100)
>> which(a > -0.5 & a < 0.5)
>> # would give me all indices of numbers greater than -0.5 and smaller
>> than +0.5
>> I have something similar with a dataframe and it produces sometimes
>> quite long commands...
>> I'd like to have something like:
>> which(within.interval(a, -0.5, 0.5))
>> Is there anything I could use for this purpose?
>> R-help at r-project.org mailing list
>> PLEASE do read the posting guide
>> and provide commented, minimal, self-contained, reproducible code.
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