Rbind two vectors in R -

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i have data.frame several columns i'd join 1 column in new data.frame.

df1 <- data.frame(col1 = 1:3, col2 = 4:6, col3 = 7:9)

how create new data.frame single column that's 1:9?

since data.frames lists of columns, unlist(df1) give 1 large vector of values. can construct new data.frame it:

data.frame(col = unlist(df1))

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