union() function
union() is used to return all the elements when two data frames are combined. It doesn’t repeat duplicate values.
Syntax:
union(dataframe1,dataframe2)
Example: R program to perform union among two dataframes.
R
library(dplyr) # create dataframe1 with college 1 data data1=data.frame(id=c(1,2,3,4,5), name=c('sravan','ojaswi','bobby','gnanesh','rohith')) # create dataframe1 with college 2 data data2=data.frame(id=c(1,2,3,4,5,6,7), name=c('sravan','ojaswi','bobby','gnanesh','rohith', 'pinkey','dhanush')) # union of the two dataframes print(union(data1,data2)) |
Output:
Union() & union_all() functions in Dplyr package in R
In this article, we will discuss union() and union_all() functions using Dplyr package in the R programming language.
Dataframes in use:
Example: R program to create data frames with college student data and display them
R
# create dataframe1 with college # 1 data data1=data.frame(id=c(1,2,3,4,5), name=c('sravan','ojaswi','bobby', 'gnanesh','rohith')) # create dataframe1 with college # 2 data data2=data.frame(id=c(1,2,3,4,5,6,7), name=c('sravan','ojaswi','bobby', 'gnanesh','rohith', 'pinkey','dhanush')) # display data1 print(data1) # display data2 print(data2) |
Output:
For both of these functions to work successfully, dplyr package should be installed and imported to the working space.