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2003 Sep 23
1
AW: Rank and extract data from a series
...then take a mean:
>2 and 5 = 3.5
>Thanks in advance.
>James Brown
X <- c(1, 4.5, 2.3, 1, 7.3)
X1 <- sort(X, decreasing=TRUE)[1:2]
X2 <- match(X1, X)
mean(X2)
Hope this helps
Thomas
___________________________________________
James Brown
Cambridge Coastal Research Unit (CCRU)
Department of Geography
University of Cambridge
Downing Place
Cambridge
CB2 3EN, UK
Telephone: +44 (0)1223 339776
Mobile: 07929 817546
Fax: +44 (0)1223 355674
E-mail: jdb33 at cam.ac.uk
E-mail: james_510 at hotmail.com
http://www.geog.cam.ac.uk/ccru/CCRU.html
___________________________________...
2003 Sep 23
0
Rank and extract data from a series
...(unsorted)
> time series:
>
> 4.5 = row 2
> 7.3 = row 5
>
> then take a mean:
>
> 2 and 5 = 3.5
>
> Thanks in advance.
>
> James Brown
>
> ___________________________________________
>
> James Brown
>
> Cambridge Coastal Research Unit (CCRU)
> Department of Geography
> University of Cambridge
> Downing Place
> Cambridge
> CB2 3EN, UK
>
> Telephone: +44 (0)1223 339776
> Mobile: 07929 817546
> Fax: +44 (0)1223 355674
>
> E-mail: jdb33 at cam.ac.uk
> E-mail: james_510 at hotmail.com
>
> http:/...