# 2.2 2 B # 4.2 4 D repeating rows in R. I'm somewhat a new user and have been trying to figure out how to repeat rows a certain number of time based on a variable. I appreciate the heads up. There are other methods to drop duplicate rows in R one method is duplicated() which identifies and removes duplicate in R. In case we want to use the functions of the dplyr package, we first need to install and load dplyr: install.packages("dplyr") # Install dplyr package How to Repeat Each Row of a Data Frame in R Programming (Example Code) In this article you’ll learn how to create (multiple) duplicates of each rows of a data frame in the R programming language. The package dplyr contains the function bind_rows() that directly combines all data frames in a list, such that there is no need to use do.call() together with rbind(): Syntax. How does the title "Revenge of the Sith" suit the plot? # 1 1 A Is there a way to use this method to duplicate columnwise? Thanks! For data.table objects, @mdsummer's is a bit faster than applying the above after converting to data.frame. A more traditional way is to use indexing, but here the rowname altering is not quite so neat (but more informative): Here are improvements on the above, the first two using purrr functional programming, idiomatic purrr: and less idiomatic purrr (identical result, though more awkward): and finally via indexing rather than list apply using dplyr: For data.frame objects, this solution is several times faster than @mdsummer's and @wojciech-sobala's. Then, we can use the rep, seq_len, and nrow functions as shown below: data_new_1 <- data[rep(seq_len(nrow(data)), each = 3), ] # Base R R - Replicate data table and create sequential dates, Convert cbind() format for binomial glm in R to a dataframe with individual rows, Drop unused factor levels in a subsetted data frame, How to join (merge) data frames (inner, outer, left, right), Convert data.frame columns from factors to characters, Remove rows with all or some NAs (missing values) in data.frame, Simultaneously merge multiple data.frames in a list, Adding new column to existing DataFrame in Python pandas, How to iterate over rows in a DataFrame in Pandas, How to select rows from a DataFrame based on column values. In this example, we will create a dataframe with a duplicate row of another. I have recently published a video on my YouTube channel, which illustrates the examples of this article. Dplyr package in R is provided with distinct() function which eliminate duplicates rows with single variable or with multiple variable. Before continuing, we introduce logical comparisons and operators, which are important to know for filtering data. Why do people call an n-sided die a "d-n"? If we do so then we must specify it in our analysis report. Prison planet book where the protagonist is given a quota to commit one murder a week. # 3 3 C Making statements based on opinion; back them up with references or personal experience. Remove duplicate rows based on all columns: However, when using the dplyr package the row names have a range from 1 to the number of rows of your data. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Does axiom schema of specification in ZFC states that any sub-set of any set exist? # 4 4 D Key R function: filter() [dplyr package]. newDataFrame is the dataframe with all the duplicate rows removed. I hate spam & you may opt out anytime: Privacy Policy. Advertisements. Furthermore, you might have a look at the related articles of this website: In this R tutorial you learned how to repeat lines of a matrix table. # Generate a vector set.seed (158) x <-round (rnorm (20, 10, 5)) x #> [1] 14 11 8 4 12 5 10 10 3 3 11 6 0 16 8 10 8 5 6 6 # For each element: is this one a duplicate (first instance of a particular value # not counted) duplicated (x) #> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE TRUE FALSE TRUE TRUE FALSE FALSE FALSE #> [15] TRUE TRUE TRUE TRUE TRUE TRUE # The values of the … Repeat rows of a data.frame. Next Page . # 11 4 D Are Van Der Waals Forces the Similar to Van der Waal Equation? # 3.1 3 C The article will consist of the following contents:
2020 repeat rows in r