Re: Cell arrays of strings in "sort" and "unique"

[David Bateman]

According to Quentin Spencer <address@hidden> (on 09/15/04):
> 
> Output from MATLAB R14:
> 
> 
> 
> >> x = [Inf, NaN, -Inf, 3, 2, 1];
> >> [a, ai] = sort (x, 'ascend')
> 
> a =
> 
>  -Inf     1     2     3   Inf   NaN
> 
> 
> ai =
> 
>     3     6     5     4     1     2
> 
> >> [a, ai] = sort (x, 'descend')
> 
> a =
> 
>   NaN   Inf     3     2     1  -Inf
> 
> 
> ai =
> 
>     2     1     4     5     6     3


Now this isn't what I would have expected. I'd assumed that the NaN's
were always sorted to the end. It seems that matlab always does an
ascending sort and then a flip(lr|ud) or whatever... It might in fact
be faster this way, but the advantage of always sorting the NaN's
to the end would be that it is easier to drop them...

For compatiability we shoudl probably do the same thing...

Thanks
D.


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David Bateman                                address@hidden
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