[R] a < b < c is alway TRUE

[David Meyer]

Till Baumgaertel wrote:
> 
> >   3 < 2 < 1   # [1] TRUE ???
> this is evaluated from left to right:
> (3<2)<1
> 
> 3<2 = FALSE
> FALSE<1 = TRUE
> 
> what's surprising is the following:
> > FALSE<1
> [1] TRUE
> > FALSE>1
> [1] FALSE
> > TRUE<1
> [1] FALSE
> > TRUE>1
> [1] FALSE
> 
> because of symmetry i'd expect TRUE>1 to be TRUE.

Not surprising at all; the symmetric case is 

> T>0
[1] TRUE
> T<0 
[1] FALSE

TRUE is neither greater nor less than 1; it's exactly 1.
And also note that not(<) is >=, and not >.

-d

> 
> cu
> till
> 
> --
> "I have seen things you people wouldn't believe.
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-- 
Mag. David Meyer			Wiedner Hauptstrasse 8-10
Vienna University of Technology		A-1040 Vienna/AUSTRIA
Department for Statistics, Probability	Tel.: (+431) 58801/10772
Theory and Actuarial Mathematics	mail: david.meyer at ci.tuwien.ac.at
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