I\'ve got a list of lists, call it listHolder, which has length 5.
listHolder
Every element in listHolder is a list of numeric data, with 160 or so e
AS @dimitris_ps mentioned earlier, the answer could be:
do.call(rbind, listHolder)
Since do.call naturally "strips" 1 level of the "list of list", obtaining a list, not a list of lists.
After that, rbind can handle the elements on the list and create a matrix.