R Language Data frames Convert data stored in a list to a single data frame using do.call
Example
If you have your data stored in a list and you want to convert this list to a data frame the do.call function is an easy way to achieve this. However, it is important that all list elements have the same length in order to prevent unintended recycling of values.
dataList <- list(1:3,4:6,7:9)
dataList
# [[1]]
# [1] 1 2 3
#
# [[2]]
# [1] 4 5 6
#
# [[3]]
# [1] 7 8 9
dataframe <- data.frame(do.call(rbind, dataList))
dataframe
# X1 X2 X3
# 1 1 2 3
# 2 4 5 6
# 3 7 8 9
It also works if your list consists of data frames itself.
dataframeList <- list(data.frame(a = 1:2, b = 1:2, c = 1:2),
data.frame(a = 3:4, b = 3:4, c = 3:4))
dataframeList
# [[1]]
# a b c
# 1 1 1 1
# 2 2 2 2
# [[2]]
# a b c
# 1 3 3 3
# 2 4 4 4
dataframe <- do.call(rbind, dataframeList)
dataframe
# a b c
# 1 1 1 1
# 2 2 2 2
# 3 3 3 3
# 4 4 4 4
