Comments on: Subset Data Frame Rows in R https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/ Data Mining and Statistics for Decision Support Sun, 01 May 2022 09:11:10 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: Aftab Malik https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-22766 Sun, 01 May 2022 09:11:10 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-22766 In reply to kassambara.

Thanks Man, really cleared everthin up

]]> By: Ramesh Ramasamy https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-2375 Fri, 20 Sep 2019 22:55:46 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-2375 Hi!
great tutorial, Very informative. Highly useful. Thanks a lot.

]]> By: kassambara https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-2089 Mon, 08 Jul 2019 05:18:04 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-2089 In reply to Jiali.

If n is positive, top_n() selects the top n rows. If negative, selects the bottom n rows.

]]> By: Jiali https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-2085 Sat, 06 Jul 2019 18:17:10 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-2085 I can use top_on to extract the highest data from the data frame, what about the lowest one, which function should i use?

]]> By: Fabricio https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-1799 Wed, 27 Mar 2019 15:53:41 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-1799 Thank you very much, that helped me a lot.

]]> By: kassambara https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-1734 Tue, 26 Feb 2019 18:51:56 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-1734 In reply to Billy.

In modern R programming (with tidyverse) each column should have a name.

Yu can transform your row names into a column for preserving them. The function `rownames_to_column()` can be used: 

library(tidyverse)
mtcars %>%
  rownames_to_column() %>%
  filter(mpg > 20)
]]> By: Billy https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-1727 Mon, 25 Feb 2019 13:44:23 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-1727 Hi!
great tutorial, my only problem is when I subset my data I loose the row.names in the new dataframe. How to I preserve that information?

]]> By: kassambara https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-1679 Tue, 05 Feb 2019 19:55:11 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-1679 In reply to sasacat.

The photo at the top of the site is from the “Saint Andéol” lake (Aubrac, Lozére, France)

]]> By: sasacat https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-1678 Tue, 05 Feb 2019 17:33:28 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-1678 Hi, I have an off-topic question – from which place is the photo at the top of this site?

]]> By: kassambara https://www.datanovia.com/en/lessons/subset-data-frame-rows-in-r/#comment-1571 Wed, 12 Dec 2018 18:57:24 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7233#comment-1571 In reply to Ashmeel.

It’s great that you find the answer to your question…

Thank you for the positive feedback! Highly appreciated

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