#Loading the rvest package
library('rvest')
## Warning: package 'rvest' was built under R version 4.0.3
## Loading required package: xml2
#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] "Split"                         "Ghostbusters: Answer the Call"
## [3] "Suicide Squad"                 "Train to Busan"               
## [5] "The Conjuring 2"               "Hush"
#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] "\n    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."                                                
## [2] "\n    Following a ghost invasion of Manhattan, paranormal enthusiasts Erin Gilbert and Abby Yates, nuclear engineer Jillian Holtzmann, and subway worker Patty Tolan band together to stop the otherworldly threat."
## [3] "\n    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."                          
## [4] "\n    While a zombie virus breaks out in South Korea, passengers struggle to survive on the train from Seoul to Busan."                                                                                             
## [5] "\n    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] "\n    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."
#Data-Preprocessing: removing '\n'
description_data<-gsub("\n","",description_data)

#Let's have another look at the description data 
head(description_data)
## [1] "    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."                                                
## [2] "    Following a ghost invasion of Manhattan, paranormal enthusiasts Erin Gilbert and Abby Yates, nuclear engineer Jillian Holtzmann, and subway worker Patty Tolan band together to stop the otherworldly threat."
## [3] "    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."                          
## [4] "    While a zombie virus breaks out in South Korea, passengers struggle to survive on the train from Seoul to Busan."                                                                                             
## [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] "    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."
#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] "117 min" "117 min" "123 min" "118 min" "134 min" "82 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] 117 117 123 118 134  82
#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, Comedy, Fantasy            "   
## [3] "\nAction, Adventure, Fantasy            "
## [4] "\nAction, Horror, 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 Action Action Horror Horror
## 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] "7.3" "6.5" "6.0" "7.6" "7.3" "6.6"
#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] 7.3 6.5 6.0 7.6 7.3 6.6
#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] "413,387" "201,725" "591,586" "158,332" "221,196" "100,290"
#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] 413387 201725 591586 158332 221196 100290
#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] "M. Night Shyamalan" "Paul Feig"          "David Ayer"        
## [4] "Sang-ho Yeon"       "James Wan"          "Mike Flanagan"
#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] "James McAvoy"       "Melissa McCarthy"   "Will Smith"        
## [4] "Yoo Gong"           "Vera Farmiga"       "John Gallagher Jr."
#Data-Preprocessing: converting actors data into factors
actors_data<-as.factor(actors_data)

#Using CSS selectors to scrape the metascore section
metascore_data_html <- html_nodes(webpage,'.metascore')

#Converting the runtime data to text
metascore_data <- html_text(metascore_data_html)

#Let's have a look at the metascore data
head(metascore_data)
## [1] "62        " "60        " "40        " "72        " "65        "
## [6] "67        "
#Data-Preprocessing: removing extra space in metascore
metascore_data<-gsub(" ","",metascore_data)

#Lets check the length of metascore data
length(metascore_data)
## [1] 96
for (i in c(33,58,74,89)){

a<-metascore_data[1:(i-1)]

b<-metascore_data[i:length(metascore_data)]

metascore_data<-append(a,list("NA"))

metascore_data<-append(metascore_data,b)

}

#Data-Preprocessing: converting metascore to numerical
metascore_data<-as.numeric(metascore_data)
## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion
#Let's have another look at length of the metascore data

length(metascore_data)
## [1] 100
#Let's look at summary statistics
summary(metascore_data)
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max.    NA's 
##   22.00   47.00   60.00   59.54   72.00   99.00       4
#Using CSS selectors to scrape the gross revenue section
gross_data_html <- html_nodes(webpage,'.ghost~ .text-muted+ span')

#Converting the gross revenue data to text
gross_data <- html_text(gross_data_html)

#Let's have a look at the votes data
head(gross_data)
## [1] "$138.29M" "$128.34M" "$325.10M" "$2.13M"   "$102.47M" "$6.86M"
#Data-Preprocessing: removing '$' and 'M' signs
gross_data<-gsub("M","", gross_data)

gross_data<-substring(gross_data,2,6)

#Let's check the length of gross data
length(gross_data)
## [1] 90
#Filling missing entries with NA
for (i in c(6,11,33,53,58,80,85,86,88,94)){

a<-gross_data[1:(i-1)]

b<-gross_data[i:length(gross_data)]

gross_data<-append(a,list("NA"))

gross_data<-append(gross_data,b)

}

#Data-Preprocessing: converting gross to numerical
gross_data<-as.numeric(gross_data)
## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion

## Warning: NAs introduced by coercion
#Let's have another look at the length of gross data
length(gross_data)
## [1] 100
summary(gross_data)
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max.    NA's 
##    0.02   10.71   53.75   86.42  101.92  532.10      10
#Combining all the lists to form a data frame
movies_df<-data.frame(Rank = rank_data, Title = title_data,

Description = description_data, Runtime = runtime_data,

Genre = genre_data, Rating = rating_data,

Metascore = metascore_data, Votes = votes_data,                                                             

Gross_Earning_in_Mil = gross_data,

Director = directors_data, Actor = actors_data)

#Structure of the data frame

str(movies_df)
## 'data.frame':    100 obs. of  11 variables:
##  $ Rank                : num  1 2 3 4 5 6 7 8 9 10 ...
##  $ Title               : chr  "Split" "Ghostbusters: Answer the Call" "Suicide Squad" "Train to Busan" ...
##  $ Description         : chr  "    Three girls are kidnapped by a man with a diagnosed 23 distinct personalities. They must try to escape befo"| __truncated__ "    Following a ghost invasion of Manhattan, paranormal enthusiasts Erin Gilbert and Abby Yates, nuclear engine"| __truncated__ "    A secret government agency recruits some of the most dangerous incarcerated super-villains to form a defens"| __truncated__ "    While a zombie virus breaks out in South Korea, passengers struggle to survive on the train from Seoul to Busan." ...
##  $ Runtime             : num  117 117 123 118 134 82 83 108 144 107 ...
##  $ Genre               : Factor w/ 8 levels "Action","Adventure",..: 8 1 1 1 8 8 1 1 1 3 ...
##  $ Rating              : num  7.3 6.5 6 7.6 7.3 6.6 6.2 8 6.9 7.6 ...
##  $ Metascore           : num  62 60 40 72 65 67 44 65 52 81 ...
##  $ Votes               : num  413387 201725 591586 158332 221196 ...
##  $ Gross_Earning_in_Mil: num  138.2 128.3 325.1 2.13 102.4 ...
##  $ Director            : Factor w/ 96 levels "Adam Wingard",..: 54 69 21 79 40 61 52 90 12 76 ...
##  $ Actor               : Factor w/ 91 levels "Aamir Khan","Adam Sandler",..: 38 60 90 91 88 42 76 74 38 7 ...
library('ggplot2')

qplot(data = movies_df,Runtime,fill = Genre,bins = 30)

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

Based on the data above, it appears action and Drama have the longest run times.
ggplot(movies_df,aes(x=Runtime,y=Rating))+
geom_point(aes(size=Votes,col=Genre))

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

Based on the data above, Action has the highest votes between the run times of 130 and 160 minutes.
ggplot(movies_df,aes(x=Runtime,y=Gross_Earning_in_Mil))+
geom_point(aes(size=Rating,col=Genre))
## Warning: Removed 10 rows containing missing values (geom_point).

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

Based on the data above it appears that Action and Adventure both have a movie with the highest gross earnings with a run time between 100 and 120 minutes.