1

我正在寻找类似于https://rdrr.io/github/bfgray3/cattonum/man/catto_freq.html的功能

但实现为 recipes::step_-function ( https://tidymodels.github.io/recipes/reference/index.html )

有人知道这个的实现吗？:)

4

1 回答 1

0

您可以使用recipes 包中的step_count。

这里有一个使用 Titanic 数据集和 Embarked 变量的示例：

> library(tidymodels)
> titanic <- 
   readr::read_csv(
     "https://raw.githubusercontent.com/datasciencedojo/datasets/master/titanic.csv", 
     col_types = readr::cols()
   )
> juiced <- recipe(Survived ~ ., data = titanic) %>%                                                
     step_count(Embarked) %>% 
     prep %>% juice %>% glimpse

Rows: 891
Columns: 13
$ PassengerId <dbl> 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, …
$ Pclass      <dbl> 3, 1, 3, 1, 3, 3, 1, 3, 3, 2, 3, 1, 3, 3, 3, 2, 3, 2, 3, 3, 2, 2, 3, 1, 3, 3, 3…
$ Name        <fct> "Braund, Mr. Owen Harris", "Cumings, Mrs. John Bradley (Florence Briggs Thayer)"…
$ Sex         <fct> male, female, female, female, male, male, male, male, female, female, female, f…
$ Age         <dbl> 22, 38, 26, 35, 35, NA, 54, 2, 27, 14, 4, 58, 20, 39, 14, 55, 2, NA, 31, NA, 35…
$ SibSp       <dbl> 1, 1, 0, 1, 0, 0, 0, 3, 0, 1, 1, 0, 0, 1, 0, 0, 4, 0, 1, 0, 0, 0, 0, 0, 3, 1, 0…
$ Parch       <dbl> 0, 0, 0, 0, 0, 0, 0, 1, 2, 0, 1, 0, 0, 5, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 5, 0…
$ Ticket      <fct> A/5 21171, PC 17599, STON/O2. 3101282, 113803, 373450, 330877, 17463, 349909, 3…
$ Fare        <dbl> 7.2500, 71.2833, 7.9250, 53.1000, 8.0500, 8.4583, 51.8625, 21.0750, 11.1333, 30…
$ Cabin       <fct> NA, C85, NA, C123, NA, NA, E46, NA, NA, NA, G6, C103, NA, NA, NA, NA, NA, NA, N…
$ Embarked    <fct> S, C, S, S, S, Q, S, S, S, C, S, S, S, S, S, S, Q, S, S, C, S, S, Q, S, S, S, C…
$ Survived    <dbl> 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0…

> juiced %>% count(Embarked)

    # A tibble: 4 × 2
      Embarked     n
      <fct>    <int>
    1 C          168
    2 Q           77
    3 S          644
    4 NA           2
于 2022-03-01T09:23:16.720 回答