Webscraping - IMDB

Author

Dormowa Sherman

Published

October 31, 2023

#Loading the 'rvest' package
library('rvest')
library(tidyverse)
── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ──
✔ dplyr     1.1.3     ✔ readr     2.1.4
✔ forcats   1.0.0     ✔ stringr   1.5.0
✔ ggplot2   3.4.4     ✔ tibble    3.2.1
✔ lubridate 1.9.3     ✔ tidyr     1.3.0
✔ purrr     1.0.2     
── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter()         masks stats::filter()
✖ readr::guess_encoding() masks rvest::guess_encoding()
✖ dplyr::lag()            masks stats::lag()
ℹ Use the conflicted package (<http://conflicted.r-lib.org/>) to force all conflicts to become errors
library(plotly)

Attaching package: 'plotly'

The following object is masked from 'package:ggplot2':

    last_plot

The following object is masked from 'package:stats':

    filter

The following object is masked from 'package:graphics':

    layout
library(dplyr)
#Specifying the url for desired website to be scraped
url <-'http://www.imdb.com/search/title?count=100&release_date=2016,2016&title_type=feature'
#Reading the HTML code from the website
webpage <- read_html(url)
#Using CSS selectors to scrape the rankings section
rank_data_html <- html_nodes(webpage,'.text-primary')
#Converting the ranking data to text
rank_data <- html_text(rank_data_html)
#Let's have a look at the rankings
head(rank_data)
[1] "1." "2." "3." "4." "5." "6."
#Data-Preprocessing: Converting rankings to numerical
rank_data<-as.numeric(rank_data)
#Let's have another look at the rankings
head(rank_data)
[1] 1 2 3 4 5 6
#Using CSS selectors to scrape the title section
title_data_html <- html_nodes(webpage,'.lister-item-header a')
#Converting the title data to text
title_data <- html_text(title_data_html)
#Let's have a look at the title
head(title_data)
[1] "Terrifier"       "Suicide Squad"   "Silence"         "Hush"           
[5] "The Conjuring 2" "Split"          
#Using CSS selectors to scrape the description section
description_data_html <- html_nodes(webpage,'.ratings-bar+ .text-muted')
#Converting the description data to text
description_data <- html_text(description_data_html)
#Let's have a look at the description data
head(description_data)
[1] "\nOn Halloween night, Tara Heyes finds herself as the obsession of a sadistic murderer known as Art the Clown."                                                                       
[2] "\nA secret government agency recruits some of the most dangerous incarcerated super-villains to form a defensive task force. Their first mission: save the world from the apocalypse."
[3] "\nIn the 17th century, two Portuguese Jesuit priests travel to Japan in an attempt to locate their mentor, who is rumored to have committed apostasy, and to propagate Catholicism."  
[4] "\nA deaf and mute writer who retreated into the woods to live a solitary life must fight for her life in silence when a masked killer appears at her window."                         
[5] "\nEd and Lorraine Warren travel to North London to help a single mother raising four children alone in a house plagued by a supernatural spirit."                                     
[6] "\nThree girls are kidnapped by a man with a diagnosed 23 distinct personalities. They must try to escape before the apparent emergence of a frightful new 24th."                      
#Data-Preprocessing: removing '\n'
description_data<-gsub("\n","",description_data)
#Let's have another look at the description data
head(description_data)
[1] "On Halloween night, Tara Heyes finds herself as the obsession of a sadistic murderer known as Art the Clown."                                                                       
[2] "A secret government agency recruits some of the most dangerous incarcerated super-villains to form a defensive task force. Their first mission: save the world from the apocalypse."
[3] "In the 17th century, two Portuguese Jesuit priests travel to Japan in an attempt to locate their mentor, who is rumored to have committed apostasy, and to propagate Catholicism."  
[4] "A deaf and mute writer who retreated into the woods to live a solitary life must fight for her life in silence when a masked killer appears at her window."                         
[5] "Ed and Lorraine Warren travel to North London to help a single mother raising four children alone in a house plagued by a supernatural spirit."                                     
[6] "Three girls are kidnapped by a man with a diagnosed 23 distinct personalities. They must try to escape before the apparent emergence of a frightful new 24th."                      
#Using CSS selectors to scrape the Movie runtime section
runtime_data_html <- html_nodes(webpage,'.text-muted .runtime')
#Converting the runtime data to text
runtime_data <- html_text(runtime_data_html)

#Let's have a look at the runtime
head(runtime_data)
[1] "85 min"  "123 min" "161 min" "82 min"  "134 min" "117 min"
#Data-Preprocessing: removing mins and converting it to numerical

runtime_data <-gsub(" min","",runtime_data)
runtime_data<-as.numeric(runtime_data)
#Let's have another look at the runtime data
head(runtime_data)
[1]  85 123 161  82 134 117
#Using CSS selectors to scrape the Movie genre section
genre_data_html <- html_nodes(webpage,'.genre')
#Converting the genre data to text
genre_data <- html_text(genre_data_html)
#Let's have a look at the runtime
head(genre_data)
[1] "\nHorror, Thriller            "          
[2] "\nAction, Adventure, Fantasy            "
[3] "\nDrama, History            "            
[4] "\nHorror, Thriller            "          
[5] "\nHorror, Mystery, Thriller            " 
[6] "\nHorror, Thriller            "          
#Data-Preprocessing: removing \n
genre_data<-gsub("\n","",genre_data)
#Data-Preprocessing: removing excess spaces
genre_data<-gsub(" ","",genre_data)
#taking only the first genre of each movie
genre_data<-gsub(",.*","",genre_data)
#Convering each genre from text to factor
genre_data<-as.factor(genre_data)
#Let's have another look at the genre data
head(genre_data)
[1] Horror Action Drama  Horror Horror Horror
9 Levels: Action Adventure Animation Biography Comedy Crime Drama ... Horror
#Using CSS selectors to scrape the IMDB rating section
rating_data_html <- html_nodes(webpage,'.ratings-imdb-rating strong')
#Converting the ratings data to text
rating_data <- html_text(rating_data_html)
#Let's have a look at the ratings
head(rating_data)
[1] "5.6" "5.9" "7.2" "6.6" "7.3" "7.3"
#Data-Preprocessing: converting ratings to numerical
rating_data<-as.numeric(rating_data)
#Let's have another look at the ratings data
head(rating_data)
[1] 5.6 5.9 7.2 6.6 7.3 7.3
#Using CSS selectors to scrape the votes section
votes_data_html <- html_nodes(webpage,'.sort-num_votes-visible span:nth-child(2)')
#Converting the votes data to text
votes_data <- html_text(votes_data_html)
#Let's have a look at the votes data
head(votes_data)
[1] "47,668"  "710,204" "119,456" "149,248" "292,263" "532,862"
#Data-Preprocessing: removing commas
votes_data<-gsub(",","",votes_data)
#Data-Preprocessing: converting votes to numerical
votes_data<-as.numeric(votes_data)
#Let's have another look at the votes data
head(votes_data)
[1]  47668 710204 119456 149248 292263 532862
#Using CSS selectors to scrape the directors section
directors_data_html <- html_nodes(webpage,'.text-muted+ p a:nth-child(1)')
#Converting the directors data to text
directors_data <- html_text(directors_data_html)
#Let's have a look at the directors data
head(directors_data)
[1] "Damien Leone"       "David Ayer"         "Martin Scorsese"   
[4] "Mike Flanagan"      "James Wan"          "M. Night Shyamalan"
#Data-Preprocessing: converting directors data into factors
directors_data<-as.factor(directors_data)
#Using CSS selectors to scrape the actors section
actors_data_html <- html_nodes(webpage,'.lister-item-content .ghost+ a')
#Converting the gross actors data to text
actors_data <- html_text(actors_data_html)
#Let's have a look at the actors data
head(actors_data)
[1] "Jenna Kanell"       "Will Smith"         "Andrew Garfield"   
[4] "John Gallagher Jr." "Vera Farmiga"       "James McAvoy"      
#Data-Preprocessing: converting actors data into factors
actors_data<-as.factor(actors_data)
#Scrape the ratings bar and convert to text
ratings_bar_data <- html_nodes(webpage,'.ratings-bar') |>
  html_text2()
#Look at the ratings bar
head(ratings_bar_data)
[1] "5.6\nRate this\n 1 2 3 4 5 6 7 8 9 10 5.6/10 X "              
[2] "5.9\nRate this\n 1 2 3 4 5 6 7 8 9 10 5.9/10 X \n40 Metascore"
[3] "7.2\nRate this\n 1 2 3 4 5 6 7 8 9 10 7.2/10 X \n79 Metascore"
[4] "6.6\nRate this\n 1 2 3 4 5 6 7 8 9 10 6.6/10 X \n67 Metascore"
[5] "7.3\nRate this\n 1 2 3 4 5 6 7 8 9 10 7.3/10 X \n65 Metascore"
[6] "7.3\nRate this\n 1 2 3 4 5 6 7 8 9 10 7.3/10 X \n63 Metascore"
#Extract metascore and convert to numerical
metascore_data <- str_match(ratings_bar_data, "\\d{2} Metascore") |>
  str_match("\\d{2}") |>
  as.numeric()

length(metascore_data)
[1] 100
metascore_data
  [1] NA 40 79 67 65 63 71 85 94 59 81 81 55 65 73 70 65 88 57 65 78 81 54 67 60
 [26] 44 51 41 65 74 71 81 66 96 68 58 76 47 66 NA 82 48 82 NA 44 51 75 42 32 25
 [51] 66 52 51 99 72 58 77 57 81 37 48 44 72 32 NA 45 44 47 66 46 53 81 69 49 77
 [76] 62 58 35 33 68 78 42 42 36 46 34 61 60 60 21 38 66 26 59 55 62 NA 68 79 74
summary(metascore_data)
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.    NA's 
  21.00   47.00   62.00   60.36   72.50   99.00       5 
#Scrape the votess bar and convert to text
votes_bar_data <- html_nodes(webpage,'.sort-num_votes-visible') |>
  html_text2()

#Look at the votes bar data and extract gross earnings
head(votes_bar_data)
[1] "Votes: 47,668"                    "Votes: 710,204 | Gross: $325.10M"
[3] "Votes: 119,456 | Gross: $7.10M"   "Votes: 149,248"                  
[5] "Votes: 292,263 | Gross: $102.47M" "Votes: 532,862 | Gross: $138.29M"
gross_data <-str_match(votes_bar_data, "\\$.+$")

#Clean data: remove 'M' sign
gross_data <-gsub("M","",gross_data)

#Clean data: remove '$'
gross_data <- substring(gross_data,2,6) %>%
  as.numeric()

length(gross_data)
[1] 100
movies_df <-data.frame (Rank=rank_data, Title=title_data, Description=description_data, Runtime=runtime_data, Genre=genre_data, Rating=rating_data, Director=directors_data, Metascore=metascore_data, Votes=votes_data, Gross_Earning_in_Mil=gross_data)

str(movies_df)
'data.frame':   100 obs. of  10 variables:
 $ Rank                : num  1 2 3 4 5 6 7 8 9 10 ...
 $ Title               : chr  "Terrifier" "Suicide Squad" "Silence" "Hush" ...
 $ Description         : chr  "On Halloween night, Tara Heyes finds herself as the obsession of a sadistic murderer known as Art the Clown." "A secret government agency recruits some of the most dangerous incarcerated super-villains to form a defensive "| __truncated__ "In the 17th century, two Portuguese Jesuit priests travel to Japan in an attempt to locate their mentor, who is"| __truncated__ "A deaf and mute writer who retreated into the woods to live a solitary life must fight for her life in silence "| __truncated__ ...
 $ Runtime             : num  85 123 161 82 134 117 139 145 128 108 ...
 $ Genre               : Factor w/ 9 levels "Action","Adventure",..: 9 1 7 9 9 9 4 7 5 3 ...
 $ Rating              : num  5.6 5.9 7.2 6.6 7.3 7.3 8.1 8.1 8 7.1 ...
 $ Director            : Factor w/ 97 levels "Alessandro Carloni",..: 19 22 61 65 44 59 63 71 18 34 ...
 $ Metascore           : num  NA 40 79 67 65 63 71 85 94 59 ...
 $ Votes               : num  47668 710204 119456 149248 292263 ...
 $ Gross_Earning_in_Mil: num  NA 325.1 7.1 NA 102.4 ...

Question 1: Based on the data below, which movie from which Genre had the longest runtime?

Answer 1: The movie called Silence from the drama genre has the longest runtime at 161 minutes.

movies_df |>
  select(Rank, Title, Runtime, Genre) |>
  filter(Runtime == max(Runtime))
  Rank   Title Runtime Genre
1    3 Silence     161 Drama
ggplot(movies_df, aes(x=Genre, y=Runtime, color=Genre)) +
  geom_point() +
  labs(x="Genre", y="Run Times", title = "Genre Run Times", caption = "Source: IMDB") +
  scale_color_brewer(name = "", palette = 'Set1') +
  theme_minimal()

Question 2: Based on the data below, in the Runtime of 130-160 mins, which genre has the highest votes?

Answer 2: In the runtime of 130-160 mins, Action has the highest votes of all the genres.

votes <- movies_df |>
filter(Runtime >= 130 | Runtime <= 160) |>
  group_by(Genre)|>
  mutate(genre_votes = sum(Votes)) |>
  distinct(Genre, genre_votes) |>
  arrange(desc(genre_votes))
votes
# A tibble: 9 × 2
# Groups:   Genre [9]
  Genre     genre_votes
  <fct>           <dbl>
1 Action       10105014
2 Drama         3584028
3 Animation     2063181
4 Biography     1835082
5 Horror        1614552
6 Adventure     1412831
7 Comedy        1321838
8 Crime          952763
9 Fantasy          4601
runtime130_to_160 <- movies_df |>
  filter(Runtime %in% (130:160) )
votes130_to_160 <- runtime130_to_160 |>
  group_by(Genre) |>
  dplyr::summarize(votes1=sum(votes_data, na.rm = TRUE))
votes130_to_160
# A tibble: 5 × 2
  Genre       votes1
  <fct>        <dbl>
1 Action    22893890
2 Adventure 22893890
3 Biography 22893890
4 Drama     22893890
5 Horror    22893890
options(scipen=999)
ggplot(runtime130_to_160, aes(x=Genre, y=Votes, fill=Genre)) +
  geom_bar(stat = "identity") +
  coord_flip() +
  ggtitle("Genre Votes for Runtimes 130 to 160") +
  labs(x = "Genre", 
       y = "Votes",
       caption = "Source: IMDB") +
  theme_classic()

Question 3: Based on the data below, across all genres which genre has the highest average gross earnings in runtime 100 to 120.

Answer 3: Animation has the highest average gross earnings in the runtime 100 to 200 minutes.

runtime100_to_120 <- movies_df |>
  filter(Runtime %in% (100:120))
gross_average <- runtime100_to_120 |>
  group_by(Genre) |>
  dplyr::summarize(Avg = mean(Gross_Earning_in_Mil, na.rm=TRUE))
gross_average
# A tibble: 8 × 2
  Genre       Avg
  <fct>     <dbl>
1 Action     89.2
2 Adventure 125. 
3 Animation 216. 
4 Biography  28.7
5 Comedy     33.9
6 Crime      51.2
7 Drama      48.4
8 Horror     46.8
ggplot(gross_average, aes(x=Genre, y=Avg, fill=Genre)) + 
  geom_bar(stat = "identity") + 
  theme_classic() +
  ggtitle("Average Gross Earnings by Genre for Runtimes 100 to 120") +
  theme(plot.title = element_text(hjust = 0.5)) +
  labs(x = "Genre", 
       y = "Earnings ($Millions)",
       caption = "Source: IMDB")