[R] Between the values

Shubha Vishwanath Karanth shubhak at ambaresearch.com
Tue Aug 12 15:25:29 CEST 2008


Or at least anyways of defining a vector/(or something like that) which
has all values between 0 and 1? 

For example:
C(0,1) is incorrect, seq(0,1,0.2) is also incorrect, seq(0,1,0.00001) is
also incorrect.... How does one specify this?

Thanks, Shubha
 

-----Original Message-----
From: Dan Davison [mailto:davison at stats.ox.ac.uk] 
Sent: Tuesday, August 12, 2008 5:54 PM
To: Shubha Vishwanath Karanth
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] Between the values

On Tue, Aug 12, 2008 at 05:16:01PM +0530, Shubha Vishwanath Karanth
wrote:
> Hi R,
> 
>  
> 
> This is a very trivial one....
> 
>  
> 
> C=0.1
> 
>  
> 
> I want to check whether my value of C is between 0 and 1
exclusively....
> I don't want to use (C>0 & C<1). And I can't use a single statement
like
> (0<C<1). Is there a between function? Or how do we specify from 0 to
1?
> Does %in% help me?

If you don't like (C > 0 && C < 1), then just write your own function
is.between(x, low, high) (NB1 you've basically written it already; NB2
single '&' for the vectorised version 'are.between'). People's
personal tastes about what's desirable will vary, and anyway it's good
practice to build up your own personal library of
functions. Ultimately if you have a high quality collection of related
functions for working on a particular sort of problem, then you should
publish them as an R package on CRAN.

Dan

> 
>  
> 
>  
> 
> Many Thanks,
> 
> Shubha
> 
>  
> 
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> 
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