Hi
Is is something like this that you want?
mydata <- data.frame(a=1:10, b=11:20, c=21:30, d=31:40, e=41:50)
myfun <- function(a,b,c)a*b+c
mydata$cool <- do.call(myfun, mydata[,c("a", "b", "c")])
mydata
## a b c d e cool
## 1 1 11 21 31 41 32
## 2 2 12 22 32 42 46
## 3 3 13 23 33 43 62
## 4 4 14 24 34 44 80
## 5 5 15 25 35 45 100
## 6 6 16 26 36 46 122
## 7 7 17 27 37 47 146
## 8 8 18 28 38 48 172
## 9 9 19 29 39 49 200
## 10 10 20 30 40 50 230
Yours sincerely / Med venlig hilsen
Frede Aakmann Tøgersen
Specialist, M.Sc., Ph.D.
Plant Performance & Modeling
Technology & Service Solutions
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> -----Original Message-----
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
> On Behalf Of Norman McBride
> Sent: 7. januar 2014 23:46
> To: r-help@r-project.org
> Subject: [R] Implementing A Formula
>
> Hello R Mailing List Members,
> My name is Peter. I am a high school student who is doing a senior
> thesis in statistical analysis. As you can see that I have chosen R. So for
> the project I am working with a member of the US Navy and analyzing some
> data. So for this data I am using a formula to find a cooling coefficient.
> This formula gets it own column in the table/display frame. So I wanted to
> know if put this formula into the display frame would I need to go row by
> row plugging this formula in to only take data from that individual row or
> would it just do that for me? If I did have to do it row by row would there
> be anyway I could expedite the process because it is over 2000 rows. Thank
> you for any help you are able to give me.
>
> -Peter
>
> [[alternative HTML version deleted]]
>
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