Append new rows to existing dataframe

Introduction

We can append new rows to existing dataframe using the rbind function. The syntax for rbind is as follows:

rbind(existing_dataframe, dataframe_to_append)

The rbind operation does not modify the current input, instead it returns a new dataframe which is a result of the operation performed.

Procedure

We will be working with a custom dataframe:

 
# package for creating dataframe
library(tibble) 

# tibble or dataframe 
df <- tibble(col1 = as.integer(c(1,2,3,4,5)), 
             col2 = c(11,12,13,14,15)
             )
View(df)

Few rows of the dataframe are as follows:

custom

We will append a new row with values 6 and 16.

Code

 
# refer procedure for definition of df
library(tibble)

# add new row to dataframe using rbind
result <- rbind(df, tibble(col1 = c(6), col2 = c(16)))
View(result)

The output of above code is:

append new row

Conclusion

Thus we have successfully appended new row to existing dataframe.

References

https://stackoverflow.com/questions/20689650/how-to-append-rows-to-an-r-data-frame