Using the mutate function in R

tidyverse
1

What is the easiest/best way to use the mutate() function in R?

2

See below for the best way :grinning:
If you tune your question, I can try to tune my answer

suppressPackageStartupMessages(library(dplyr))

df1 <- data.frame(
  x = 1:3
)

df2 <- df1 |>
  mutate(
    y = 2*x,
    z = case_when(
      y <  3 ~ "small",
      y == 4 ~ "fair",
      TRUE   ~ "must be large"
    )
  )

print(df2)
#>   x y             z
#> 1 1 2         small
#> 2 2 4          fair
#> 3 3 6 must be large
Created on 2022-11-29 with reprex v2.0.2
3

Thanks for that. How about using mutate() to create new columns form an existing data frame? Also, how can summarize() be used to make summaries if total sums/averages? Thanks so much.

4

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5

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