dplyr in r | dplyr mutate example | dplyr mutate add multiple columns | dplyr mutate drop column

The mutate function enables us to easily add new columns to our data. We can either provide a vector of values in the same way we would with a standard data frame or we can create new columns from existing variables.

In this video we create a new column containing the original row names from the mtcars data frame. We then use the information contained with the hp and wt columns to create a second new column containing the power-to-weight ratio.
When using dplyr mutate function the columns in a data frame are dropped by setting them to NULL

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Chapters
0:00 introduction
0:30 dplyr mutate
2:19 dplyr drop columns with mutate

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