jose silva wrote:
Dear all
Its very difficult to read your post due to all the blank lines, so I
cannot really
read it very well, but what about writing your function as (not tried)
fun <- function(x) c(x[1], ....
or if that doesn't work look into
?mapply
But you should really look into the settings of your mail program!
Kjetil
I think my problem is not complicated but I'm having difficulties to solve it.
v is a vector: v=c(p1 , p2 , p3 , p4), and f is a function: f : v -> w , where
w=c(p1 , p2*(1-p1) , p3*(1-p2)*(1-p1) , p4*(1-p3)*(1-p2)*(1-p1))
I write the function f as:
f<- function(w,x,y,z) {c(w,x*(1-w),y*(1-x)*(1-w),z*(1-y)*(1-x)*(1-w))}
f(a,b,c,d) it works well.
But now I want to apply f to each row of a data frame with 4 columns:
d<-data.frame(a=seq(1,10), b=seq(11,20), c=seq(21,30),d=seq(31,40))
t(apply(d,1,f)) is not working?
I think each element of each row is not corresponding to w,x,y,z and now I'm
lost?
Can someone help me?
thks
J. Silva
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