Replicate element in a list of vector if length(vector)==1 in R -


i have simple list of vectors , replicate element of every vectors have length of 1.

mylist <- list(c(98, 102), c(175, 177), c(239, 240), c(146, 147, 168, 169 ), c(240, 242), c(363, 391), c(144, 146, 146), 197, 126, c(181,  192))  results  <- lapply(mylist,function(x) if(length(x)==1) rep(x[1],each=2))

i in results expected replicates, how keep in results vectors of length >1 ? can't find correct way this. i'm pretty sure quite simple...

thanx helping

you can add else statement leave elements more values

mylist <- list(c(98, 102), c(175, 177), c(239, 240), c(146, 147, 168, 169 ), c(240, 242), c(363, 391), c(144, 146, 146), 197, 126, c(181,  192))  results  <- lapply(mylist,function(x) if(length(x)==1) rep(x[1],each=2) else x)

which results in

[[1]] [1]  98 102  [[2]] [1] 175 177  [[3]] [1] 239 240  [[4]] [1] 146 147 168 169  [[5]] [1] 240 242  [[6]] [1] 363 391  [[7]] [1] 144 146 146  [[8]] [1] 197 197  [[9]] [1] 126 126  [[10]] [1] 181 192

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