I have a list that looks like this
[[1]]
1 2
[[2]]
10 20 30
[[3]]
4
and I would like to convert it to a dataframe that looks like this
column1 column2 column3
1 2 NA
10 20 30
4 NA NA
Any help is highly appreciated
An option is to get the lengths of the list elements, get the max length, pad NA at the end where the length is less than the max length and dbind the list elements
mx <- max(lengths(lst1))
out <- do.call(rbind.data.frame, lapply(lst1, `length<-`, mx))
names(out) <- paste0('column', 1:3)
out
# column1 column2 column3
#1 1 2 NA
#2 10 20 30
#3 4 NA NA
lst1 <- list(1:2, c(10, 20, 30), 4)
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