developer-roadmap/roadmaps/r/content/mutate--transform@8vgTUVCNPb71lNHKycHce.md

Mutate & Transform

Mutating adds new columns or changes existing ones in a data frame, calculating values across every row based on an expression you specify. Multiple new columns can be created in a single step, with later columns able to reference ones created earlier in the same step. This is one of the most frequently used data manipulation operations, since almost every analysis involves deriving new variables from existing ones.

Visit the following resources to learn more:

• @article@Create, modify, and delete columns
• @article@dplyr mutate() in R: Create and Transform Columns
• @video@dplyr: mutate