Replace Multiple Values in Columns of Data Frame in R (2 … Conditional replacement of values in multiple columns The content of the post is structured as follows: 1) Creation of Example Data. 2) Example 1: Replacing Missing Data in One Specific Variable Using is.na () & mean () Functions. Python Pandas replace multiple values – 15 examples Is there a single-call way to assign several specific columns to a value using dplyr, based on a condition from a column outside that group of columns? Using case_when() over multiple columns - RStudio Community I write … Hi, I would like to conditionally mutate numeric values across several columns; I have managed to do it and it works, but it looks super clumsy. Here's an example of what I'm trying to do: In this R tutorial, you are going to learn how to add a column to a dataframe based on values in other columns.Specifically, you will learn to create a new column using the mutate() function from the package dplyr, along with some other useful functions.. Conditional Replace: Single Column” many times. For example, we might want to create a column based on salary for which if salaries are greater than the salary in another column then adding those salaries otherwise taking the difference between them. condition: A condition required to be TRUE to set NA. Replace Values in Column based on Condition - Python Right click on a value in column B and click “Replace Values”. The cell values of this column can then be subjected to constraints, logical or comparative conditions, and then data frame subset can be obtained. Share. All you need to do now is to modify the code with the correct logic. Solved! 1 Answer. R Replace Missing Values by Column Mean - Statistics Globe I end up with the following code, but I can't figure out how to refer to the original value from the column (if it shouldn't be replaced). The good news is that the next section is a solution to that. Let’s first replicate our original data in a new data object: Now, let’s assume that we want to change every character value “A” to the character string “XXX”. R: Add a Column to Dataframe Based on Other Columns with dplyr Replace the selected value with any desired value.