Hi, i have two data.frame x and y like : > x <- data.frame( num = c(1:10), value = runif(10) ) > y <- data.frame( num = c(6:10), value = runif(5) ) and i want to obtain something like :
num.x value.x num.y value.y
1 0.38423828 NA 0.2911089
2 0.17402507 NA 0.8455208
3 0.54443465 NA 0.8782199
4 0.04540406 NA 0.3202252
5 0.46052426 NA 0.7560559
6 0.61385464 6 0.2911089
7 0.48274968 7 0.8455208
8 0.11961778 8 0.8782199
9 0.64531394 9 0.3202252
10 0.92052805 10 0.7560559with NA in case of missing value for y to x.
{ for this example : i write simply
> data.frame(num.x=c(1:10), value.x=x[[2]],num.y=c(rep(NA,5),6:10),value.y=y[[2]]) }
I didn't find solution in merge(x,y,by="num") : missing rows are no keeping. Can't you help me ?
thanks, Bruno
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