Example 1: Reorder Columns of Data Frame by IndexIn the first example, you’ll learn how to reorder data frame columns by their index (i.e. the position of the variable within the data frame).We simply have to
Up next…adding and removing columns from a data frame. Or if you want to skip ahead, see below…. Inspecting your data Ways to Select a Subset of Data From an R Data Frame How To Create an R Data Frame (this article) How To Sort an R Data Frame How to Add and Remove Columns R...
Subsetting datasets is a crucial skill for any data professional. Learn and practice subsetting data in this quick interactive tutorial! Tom Jeon 16 min tutorial Matrices in R Tutorial Learn all about R's matrix, naming rows and columns, accessing elements also with computation like addition, ...
select(): Extract one or multiple columns as a data table. It can be also used to remove columns from the data frame. select_if(): Select columns based on a particular condition. One can use this function to, for example, select columns if they are numeric. Helper functions-starts_with...
The R programming language provides many alternative ways on how to drop columns from a data frame by name. The following R programming syntax explains how to apply the subset function to delete multiple variables:data3 <- subset(data, select = - c(x1, x3)) # Apply subset function data3...
Scenario 1 – (Dropping/deleting) list of columns from a data frame) Method 1: Delete column by name We are going to delete/dropVendor TypeandCountry df= subset(Testdata, select = -c ( Vendor Type, Country)) Note: “-“ sign indicates dropping variables ...
In this R code example, we first load thedplyrpackage, which provides thefilter()function for selecting rows based on a condition. We then create a data frame with 10 rows and 3 columns (id, age, and gender). Next, we use thefilter()function to select rows where the age column is ...
Simple R functions to keep or remove data frame columns This function removes columns from a data frame by name: removeCols <- function(data, cols){ return(data[,!names(data) %in% cols]) } This function keeps columns of a data frame by name: ...
cor_spread(): spread a long correlation data frame into wide format (correlation matrix). 相关矩阵取子集 cor_select(): subset a correlation matrix by selecting variables of interest. pull_triangle(),pull_upper_triangle(),pull_lower_triangle(): pull upper and lower triangular parts of a (corr...
DATA FRAME in R programming ⚡ With this tutorial you will learn how to CREATE and ACCESS a DATAFRAME in R, ADD or REMOVE columns and rows, SORT and FILTER