Reduce multiple values down to a single value

Create one or more scalar variables summarising the variables of an existing data.frame. Grouped data.frames will result in one row in the output for each group.

summarise(.data, ...)

summarize(.data, ...)

Arguments

.data	A data.frame.
...	Name-value pairs of summary functions. The name will be the name of the variable in the result. The value can be: A vector of length 1, e.g. min(x), n(), or sum(is.na(y)). A vector of length n, e.g. quantile().

Details

summarise() and summarize() are synonyms.

Examples

summarise(mtcars, mean(mpg))
#>   mean(mpg)
#> 1  20.09062
summarise(mtcars, meanMpg = mean(mpg), sumMpg = sum(mpg))
#>    meanMpg sumMpg
#> 1 20.09062  642.9
mtcars %>% summarise(mean(mpg))
#>   mean(mpg)
#> 1  20.09062