[R] converting a list to a data.frame
Mark Wardle
mark at wardle.org
Tue Apr 3 13:35:21 CEST 2007
Biscarini, Filippo wrote:
> Dear Mark,
>
> If you have time you can try directly into R this excerpt from my list.
>
This is horrible code, and I should be shot! I would appreciate any
better ways of doing this, but I think this works!
l = list(c(1,2,4),c(4,5,2,1),c(3,4,6,3),c(3,1,76,4,2))
fix.it <- function(list) {
max.length = 0
x = NULL
for(i in list) max.length = max(max.length, length(i))
for(i in list) {
d = c(i, rep(NA, max.length - length(i)))
if(is.null(x)) x = rbind(unlist(d))
else x = rbind(x, unlist(d))
}
return(x)
}
fix.it(l)
It works on the data you sent me:
> fix.it(A)
Have fun,
Mark
--
Dr. Mark Wardle
Specialist registrar, Neurology
Cardiff, UK
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