Bind together two data frames by their rows or columns in R, To join two data frames by their rows, use the bind_rows() function from the dplyr package in R.
Bind together two data frames by their rows or columns in R
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bind_rows(df1, df2, df3, ...)
Similarly, you may use dplyr’s bind_cols() function to join two data frames based on their columns.
bind_cols(df1, df2, df3, ...)
The examples that follow demonstrate how to utilize each of these functions in practice.
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Example 1: Use bind_rows()
The following code demonstrates how to link three data frames together depending on their rows using the bind_rows() function.
library(dplyr)
Let’s create a data frames
df1 <- data.frame(team=c('A', 'A', 'B', 'B'), Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â points=c(412, 514, 519, 254))
df2 <- data.frame(team=c('A', 'B', 'C', 'C'), Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â points=c(408, 617, 522, 285))
df3 <- data.frame(team=c('A', 'B', 'C', 'C'), Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â assists=c(454, 985, 122, 456))
Now we can row bind together data frames.
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bind_rows(df1, df2, df3)
 team points assists 1    A   412     NA 2    A   514     NA 3    B   519     NA 4    B   254     NA 5    A   408     NA 6    B   617     NA 7    C   522     NA 8    C   285     NA 9    A    NA    454 10   B    NA    985 11   C    NA    122 12   C    NA    456
If the data frames do not all have the same column names, this function will automatically fill in missing values with NA.
Example 2: Use bind_cols()
The following code demonstrates how to connect three data frames together depending on their columns using the bind_cols() function.
library(dplyr)
Let’s try to column bind together data frames.
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bind_cols(df1, df2, df3)
team...1 points...2 team...3 points...4 team...5 assists 1Â Â Â Â Â Â Â AÂ Â Â Â Â Â Â 412Â Â Â Â Â Â Â AÂ Â Â Â Â Â Â 408Â Â Â Â Â Â Â AÂ Â Â Â 454 2Â Â Â Â Â Â Â AÂ Â Â Â Â Â Â 514Â Â Â Â Â Â Â BÂ Â Â Â Â Â Â 617Â Â Â Â Â Â Â BÂ Â Â Â 985 3Â Â Â Â Â Â Â BÂ Â Â Â Â Â Â 519Â Â Â Â Â Â Â CÂ Â Â Â Â Â Â 522Â Â Â Â Â Â Â CÂ Â Â Â 122 4Â Â Â Â Â Â Â BÂ Â Â Â Â Â Â 254Â Â Â Â Â Â Â CÂ Â Â Â Â Â Â 285Â Â Â Â Â Â Â CÂ Â Â Â 456
The original columns from each data frame appear in the final data frame in the order indicated in the bind_cols() function.