[R] figure out whether 1 is between two numbers

[(Ted Harding)]

On 18-Feb-06 Duncan Murdoch wrote:
> On 2/18/2006 1:13 AM, Robert W. Baer, Ph.D. wrote:
>> Try:
>> (X>1 & Y<1) | (X<1 & Y>1)
> 
> This is a minor stylistic suggestion: when translating the
> mathematical expression (a < b < c), write it as
> (a < b) & (b < c). It has no effect on the outcome, but
> keeping the inequalities in the same direction makes 
> the meaning more obvious.
> 
> If you do this, your expression becomes
> 
> (Y<1 & 1<X) | (X<1 & 1<Y)
> 
> and it's clear at a glance what's going on.

And, as a follow-up, can I suggest for ultimate clarity [ :) ]

  (X<1 | Y<1) & (1<X | 1<Y)

Ted.

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Date: 19-Feb-06                                       Time: 10:16:55
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