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2012 Nov 14
5
aggregate combination data
Dear R users,
I want to aggregate all *d *data from all combination of n *plots* taken
by k.
Thank very much!
My data is like that:
plot d 1 14 1 13 1 12 1 14 1 18 1 20 1 21 1
43 1 108 1 43 2 41 2 61 2 83 2 61 2 84 2 45 2 21 2 12 2 11 ... 100
10
100 12
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Catalin-Constantin ROIBU
Forestry engineer, PhD
Forestry Faculty of Suceava
2016 Apr 15
0
aggregate combination data
...>>>
>>>>>>>> fun2 <- function(x, p){
>>>>>>>> ? ? ? idx <- x[["plot"]] %in% p
>>>>>>>> ? ? ? x[idx, ]
>>>>>>>> }
>>>>>>>>
>>>>>>>> uplot <- unique(dat$plot)
>>>>>>>> plots <- fun(uplot, 2)
>>>>>>>> apply(plots, 2, function(p) fun2(dat, p))
>>>>>>>>
>>>>>>>> There's a total of 4560 df's returned.
>>>>>>>&...