In the examples below, the first loses the name attached by foo(), the second
retains names attached by bar(). Is this an intentional difference? I’d
prefer that the names be retained in both cases.
foo <- function(x) { c(mean = base::mean(x)) }
bar <- function(x) { c(mean = base::mean(x), sd = stats::sd(x))}
aggregate(iris$Sepal.Length, by = list(iris$Species), FUN = foo)
#> Group.1 x
#> 1 setosa 5.006
#> 2 versicolor 5.936
#> 3 virginica 6.588
aggregate(iris$Sepal.Length, by = list(iris$Species), FUN = bar)
#> Group.1 x.mean x.sd
#> 1 setosa 5.0060000 0.3524897
#> 2 versicolor 5.9360000 0.5161711
#> 3 virginica 6.5880000 0.6358796
—rjp
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