r - rbind all dataframes in a list of lists by name -


this question has answer here:

i'd rbind a dataframes in alist - how this? 

alist <- list(a = data.frame(1:3),               b = data.frame(4:6),               = data.frame(7:9))  (alist <- list(alist, alist, alist))

use lapply subset out elements want, , rbind do.call on list:

do.call("rbind",lapply(alist,function(x) x[["a"]]))   x1.3 1    1 2    2 3    3 4    1 5    2 6    3 7    1 8    2 9    3

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