In this tutorial, we will learn how to randomly replace values of numerical columns in a dataframe to NAs or missing values. We will use dplyr’s across() function to select only the numerical columns from a dataframe and probabilistically select certain percent of elements to change to NAs. First, let us load tidyverse packages and… Continue reading How to Randomly Replace Values of Numerical Columns in a dataframe to NAs
Category: NAs in R
How to Randomly Replace Values in a Matrix to NAs
In this tutorial, we will see how to randomly replace values in a matrix to NAs, missing values. We will first create some data matrix by simulation. Here we create a matrix with 20 rows and 5 columns. The data matrix is complete without any missing values. To randomly introduce NAs, first we randomly select… Continue reading How to Randomly Replace Values in a Matrix to NAs