[R] list objects calculation

[Petr PIKAL]

Hi

you maybe can use mapply

If you have 2 lists

xl<-list(x, x+5)
 xl
[[1]]
[1] 1 2 3 4 5

[[2]]
[1]  6  7  8  9 10

> yl<-list(9,10)
> yl
[[1]]
[1] 9

[[2]]
[1] 10

and this function


fff<- function(xl,yl) (xl-yl)/yl

mapply(fff, xl, yl)
           [,1] [,2]
[1,] -0.8888889 -0.4
[2,] -0.7777778 -0.3
[3,] -0.6666667 -0.2
[4,] -0.5555556 -0.1
[5,] -0.4444444  0.0

gives you probably desired result.

Regards
Petr


> 
> I have two kinds of list,
> for example,  one is like
> t[[1]]=
> 1 6
> 2 7
> 3 8
> 4 9
> 5 10
> ...
> t[[731]]
> the other is
> k[[1]]= 9 10
> ...
> k[[731]]
> I want to have a new list,like x
> x[[1]]=
> (1-9)/9    (6-10)/10
> (2-9)/9    (7-10)/10
> (3-9)/9    (8-10)/10
> (4-9)/9    (9-10)/10
> (5-9)/9    (10-10)/10 
> ...
> x[[731]]
> How should I do?
> Thank you.
> 
> --
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> calculation-tp4602437.html
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