R devel - Nov 2008 - sort returns a wrong index (PR#13242)

Full_Name: Bert Tijhuis
Version: 2.8.0
OS: MS-Windows
Submission from: (NULL) (217.140.7.52)


> xd
[1]  0.5 -1.0  0.2   NA -3.0  1.0  2.0   NA  2.0

> sort(xd, index=T)$ix
[1] 4 2 3 1 5 6 7


And in my believe it should be
5 2 3 1 6 7 8 4 9

This was function well in R 2.7.2

Good luck,

The default for na.last in sort() is NA (unlike sort.list):
> sort.list(xd, na.last=NA)
[1] 4 2 3 1 5 6 7

so the answer is correct (and the same as given by 2.7.2).

On Mon, 3 Nov 2008, bert.tijhuis at wavin.com wrote:
> Full_Name: Bert Tijhuis
> Version: 2.8.0
> OS: MS-Windows
> Submission from: (NULL) (217.140.7.52)
>
>
>> xd
> [1]  0.5 -1.0  0.2   NA -3.0  1.0  2.0   NA  2.0
>
>
>> sort(xd, index=T)$ix
> [1] 4 2 3 1 5 6 7
>
>
> And in my believe it should be
> 5 2 3 1 6 7 8 4 9
The FAQ asks you to report only things you 'know for certain', not 
beliefs.
> This was function well in R 2.7.2
Indeed it did and gave the same answer as 2.8.0!

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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