Analogous function for arrange in dplyr.
arrange(.data, ..., cols = NULL, order = 1L)data.frame
Arrange by what group? Minus symbol means arrange by descending order.
For set_arrange only.
A character vector of column names of .data by which to order.
If present, override .... Defaults to NULL.
For set_arrange only. An integer vector with only possible
values of 1 and -1, corresponding to ascending and descending order.
Defaults to 1.
A data.table
Once arranged, the order of entries would be changed forever.
a = as.data.table(iris)
a %>% arrange(Sepal.Length)
#> Sepal.Length Sepal.Width Petal.Length Petal.Width Species
#> <num> <num> <num> <num> <fctr>
#> 1: 4.3 3.0 1.1 0.1 setosa
#> 2: 4.4 2.9 1.4 0.2 setosa
#> 3: 4.4 3.0 1.3 0.2 setosa
#> 4: 4.4 3.2 1.3 0.2 setosa
#> 5: 4.5 2.3 1.3 0.3 setosa
#> ---
#> 146: 7.7 3.8 6.7 2.2 virginica
#> 147: 7.7 2.6 6.9 2.3 virginica
#> 148: 7.7 2.8 6.7 2.0 virginica
#> 149: 7.7 3.0 6.1 2.3 virginica
#> 150: 7.9 3.8 6.4 2.0 virginica
a
#> Sepal.Length Sepal.Width Petal.Length Petal.Width Species
#> <num> <num> <num> <num> <fctr>
#> 1: 4.3 3.0 1.1 0.1 setosa
#> 2: 4.4 2.9 1.4 0.2 setosa
#> 3: 4.4 3.0 1.3 0.2 setosa
#> 4: 4.4 3.2 1.3 0.2 setosa
#> 5: 4.5 2.3 1.3 0.3 setosa
#> ---
#> 146: 7.7 3.8 6.7 2.2 virginica
#> 147: 7.7 2.6 6.9 2.3 virginica
#> 148: 7.7 2.8 6.7 2.0 virginica
#> 149: 7.7 3.0 6.1 2.3 virginica
#> 150: 7.9 3.8 6.4 2.0 virginica
a %>% arrange(cols = c("Sepal.Width","Petal.Length"))
#> Sepal.Length Sepal.Width Petal.Length Petal.Width Species
#> <num> <num> <num> <num> <fctr>
#> 1: 5.0 2.0 3.5 1.0 versicolor
#> 2: 6.0 2.2 4.0 1.0 versicolor
#> 3: 6.2 2.2 4.5 1.5 versicolor
#> 4: 6.0 2.2 5.0 1.5 virginica
#> 5: 4.5 2.3 1.3 0.3 setosa
#> ---
#> 146: 5.4 3.9 1.7 0.4 setosa
#> 147: 5.8 4.0 1.2 0.2 setosa
#> 148: 5.2 4.1 1.5 0.1 setosa
#> 149: 5.5 4.2 1.4 0.2 setosa
#> 150: 5.7 4.4 1.5 0.4 setosa
a
#> Sepal.Length Sepal.Width Petal.Length Petal.Width Species
#> <num> <num> <num> <num> <fctr>
#> 1: 5.0 2.0 3.5 1.0 versicolor
#> 2: 6.0 2.2 4.0 1.0 versicolor
#> 3: 6.2 2.2 4.5 1.5 versicolor
#> 4: 6.0 2.2 5.0 1.5 virginica
#> 5: 4.5 2.3 1.3 0.3 setosa
#> ---
#> 146: 5.4 3.9 1.7 0.4 setosa
#> 147: 5.8 4.0 1.2 0.2 setosa
#> 148: 5.2 4.1 1.5 0.1 setosa
#> 149: 5.5 4.2 1.4 0.2 setosa
#> 150: 5.7 4.4 1.5 0.4 setosa