Select column with column name
Here we will use select() method to select column by its name
Syntax:
select(dataframe,column1,column2,.,column n)
Here, data frame is the input dataframe and columns are the columns in the dataframe to be displayed
Example 1: R program to select columns
R
# load the library library(dplyr) # create dataframe with 3 columns # id,name and address data1=data.frame(id=c(1,2,3,4,5,6,7,1,4,2), name=c('sravan','ojaswi','bobby','gnanesh', 'rohith','pinkey','dhanush', 'sravan','gnanesh','ojaswi'), address=c('hyd','hyd','ponnur','tenali', 'vijayawada','vijayawada', 'guntur','hyd','tenali','hyd')) # select id column from the dataframe by # column name print(select(data1,id)) # select name column from the dataframe by # column name print(select(data1,name)) |
Output:
Example 2: R program to select multiple columns
R
# load the library library(dplyr) # create dataframe with 3 columns # id,name and address data1=data.frame(id=c(1,2,3,4,5,6,7,1,4,2), name=c('sravan','ojaswi','bobby','gnanesh', 'rohith','pinkey','dhanush', 'sravan','gnanesh','ojaswi'), address=c('hyd','hyd','ponnur','tenali', 'vijayawada','vijayawada', 'guntur','hyd','tenali','hyd')) # select multiple columns from the dataframe # by column name print(select(data1,id,name,address)) |
Output:
Select variables (columns) in R using Dplyr
In this article, we are going to select variables or columns in R programming language using dplyr library.
Dataset in use: