Extracting specific columns from a data frame

0 votes
I want to construct a new dataframe in R that only contains three of the six columns in my current data frame.

The only command I can think of to extract columns A, B, and E from a data frame called df is this:

data.frame(df$A,df$B,df$E)

Is there a more efficient method to accomplish this?
Jul 6, 2022 in Data Analytics by avinash
• 1,840 points
460 views

1 answer to this question.

0 votes

Yes, there is a more efficient method to extract specific columns from a data frame in R. You can use the indexing operator [ ] with the column names to subset the desired columns. Here's an example:

new_df <- df[, c("A", "B", "E")]

In this example, df is the original data frame, and we use the indexing operator [, ] to subset specific columns. Inside the square brackets, we provide the column names "A", "B", and "E" as a vector within the c() function. The resulting new_df data frame will only contain the columns A, B, and E from the original data frame.

This method avoids creating multiple data frames using the data.frame() function and provides a more concise and efficient way to extract specific columns.

Enhance your data skills with our comprehensive Data Analytics Courses – Enroll now!

answered Jun 22, 2023 by anonymous
• 1,180 points

Related Questions In Data Analytics

0 votes
1 answer

Extracting numeric columns from a data.frame - R

You can use the select_if() function from ...READ MORE

answered May 4, 2018 in Data Analytics by Bharani
• 4,660 points
7,496 views
0 votes
1 answer
+1 vote
2 answers

Finding number of missing values and removing those missing values from a data-frame

To find number of missing values for ...READ MORE

answered Aug 14, 2019 in Data Analytics by anonymous
823 views
0 votes
1 answer

How to spilt a column of a data frame into multiple columns

it is easily achievable by using "stringr" ...READ MORE

answered Apr 9, 2018 in Data Analytics by DeepCoder786
• 1,720 points
1,408 views
+1 vote
2 answers

How to sort a data frame by columns in R?

You can use dplyr function arrange() like ...READ MORE

answered Aug 21, 2019 in Data Analytics by anonymous
• 33,030 points
1,381 views
0 votes
1 answer

Big Data transformations with R

Dear Koushik, Hope you are doing great. You can ...READ MORE

answered Dec 18, 2017 in Data Analytics by Sudhir
• 1,610 points
703 views
0 votes
2 answers

Transforming a key/value string into distinct rows in R

We would start off by loading the ...READ MORE

answered Mar 26, 2018 in Data Analytics by Bharani
• 4,660 points
784 views
0 votes
1 answer

Finding frequency of observations in R

You can use the "dplyr" package to ...READ MORE

answered Mar 26, 2018 in Data Analytics by Bharani
• 4,660 points
5,452 views
0 votes
1 answer

Left Join and Right Join using "dplyr"

The below is the code to perform ...READ MORE

answered Mar 27, 2018 in Data Analytics by Bharani
• 4,660 points
810 views
0 votes
1 answer

All Levels of a Factor in a Model Matrix in R

Yes, you can modify the model.matrix() function ...READ MORE

answered Jun 22, 2023 in Data Analytics by anonymous
• 1,180 points
490 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP