[R] how to call a function for each row

[jim holtman]

will this do it:

> x <- read.table(text = "X1 X2 X3
+ 1   3  5
+ 2   4  6
+ 3   6  1", header = TRUE)
> x
  X1 X2 X3
1  1  3  5
2  2  4  6
3  3  6  1
> apply(x, 1, function(a) 6 * a[1] + 7 * a[2] + 8 * a[3])
[1] 67 88 68
>
>

On Wed, Nov 30, 2011 at 8:10 AM, arunkumar1111 <akpbond007 at gmail.com> wrote:
> Hi
>
>  I have  a data-frame which look like this
>
> X1 X2 X3
> 1   3  5
> 2   4  6
> 3   6  1
>
> I want to apply a formula Y=6*X1 + 7*X2 + 8*X3  for every row
>
>
> Thanks in Advance
>
>
>
>
>
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/how-to-call-a-function-for-each-row-tp4122906p4122906.html
> Sent from the R help mailing list archive at Nabble.com.
>
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-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.