112035127_HW02

Loading libraries

library(tidyr)
library(readr)
library(dplyr)

## 
## Attaching package: 'dplyr'

## The following objects are masked from 'package:stats':
## 
##     filter, lag

## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union

Importing dataset

Netflix <- read_csv("C:/Users/Admin/OneDrive - 亞洲大學[Asia University]/Financial Database Mana & Application/Netflix.csv")

## Rows: 6234 Columns: 12
## ── Column specification ────────────────────────────────────────────────────────
## Delimiter: ","
## chr (10): type, title, director, cast, country, date_added, rating, duration...
## dbl  (2): show_id, release_year
## 
## ℹ Use `spec()` to retrieve the full column specification for this data.
## ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.

Separate actors in the cast column and renaming the column

Netflix_Actor <- Netflix %>% 
  separate_rows(cast, sep = ", ") %>% 
  drop_na(cast) %>% 
  rename(actor = cast)
head(Netflix_Actor)

## # A tibble: 6 × 12
##    show_id type  title     director actor country date_added release_year rating
##      <dbl> <chr> <chr>     <chr>    <chr> <chr>   <chr>             <dbl> <chr> 
## 1 81145628 Movie Norm of … Richard… Alan… United… September…         2019 TV-PG 
## 2 81145628 Movie Norm of … Richard… Andr… United… September…         2019 TV-PG 
## 3 81145628 Movie Norm of … Richard… Bria… United… September…         2019 TV-PG 
## 4 81145628 Movie Norm of … Richard… Cole… United… September…         2019 TV-PG 
## 5 81145628 Movie Norm of … Richard… Jenn… United… September…         2019 TV-PG 
## 6 81145628 Movie Norm of … Richard… Jona… United… September…         2019 TV-PG 
## # ℹ 3 more variables: duration <chr>, listed_in <chr>, description <chr>

Finding the 6 actors that have the most appearances on TV show

Netflix_Actor %>%
  select(type, actor) %>% 
  filter(type == "TV Show") %>% 
  group_by(actor) %>% 
  count(sort = TRUE) %>% 
  ungroup() %>% 
  head(6)

## # A tibble: 6 × 2
##   actor                  n
##   <chr>              <int>
## 1 Takahiro Sakurai      18
## 2 Yuki Kaji             16
## 3 Daisuke Ono           14
## 4 David Attenborough    14
## 5 Ashleigh Ball         12
## 6 Hiroshi Kamiya        12