rvest

I need to install rvest package for R version 3.1.2 (2014-10-31) I get these errors: checking whether the C++ compiler supports the long long type... no *** stringi cannot be built. Upgrade your C++ compiler's settings ERROR: configuration failed for package ‘stringi’ * removing ‘/usr/local/lib64/R/library/stringi’ ERROR: dependency ‘stringi’ is not available for package ‘stringr’ * removing ‘/usr/local/lib64/R/library/stringr’ ERROR: dependency ‘stringr’ is not available for package ‘httr’ * removing ‘/usr/local/lib64/R/library/httr’ ERROR: dependency ‘stringr’ is not available for package

I am a beginner. I created a small code to web scraping with rvest. I found a very convenient code %>% html_node ()%>% html_text ()%>% as.numeric () , but I was not able to correctly change the code for scraping url of image. My code for web scraping url of image: UrlPage <- html ("http://eyeonhousing.org/2012/11/gdp-growth-in-the-third-quarter-improved-but-still-slow/") img <- UrlPage%>% html_node (". wp-image-5984")%>% html_attrs () Result: class "Aligncenter size-full wp-image-5984" `enter code here`title "Blog gdp 2012_10_1" alt '" src "Http://eyeonhousing.files.wordpress.com/2012/11/blog

Recently, Yahoo changed their authentication mechanism to a two step one. So now, when I login to a yahoo site, I put in my username, and then it asks me to open my yahoo mobile app to give it a code. Alternatively, you can have it email or text you some other way around this. The result of this is that code that used to work to programatically login to Yahoo sites no longer works. This code just redirects to the login form. I've tried with and without a useragent string and with and without the countrycode=1 in the form values. I'm fine with entering a code after looking at my mobile app, but

I would like to web scrape this web site In particular I would like to take the information that it is in that table: Please note that I choose a specific date on the upper right corner. By following this guide I wrote the following code library(rvest) url_nba <- 'https://projects.fivethirtyeight.com/2017-nba-predictions/' webpage_nba <- read_html(url_nba) #Using CSS selectors to scrap the rankings section data_nba <- html_nodes(webpage_nba,'#standings-table') #Converting the ranking data to text data_nba <- html_text(data_nba) write.csv(data_nba,"web scraping test.csv") From my understanding

How can I loop the rvest::follow_link() function to scrape linked webpages? Use Case: Identify all Lego Movie cast members Follow all Lego Movie cast member links Grab a table of each movie (+ year) for all cast members The required selectors I need are below: library(rvest) lego_movie <- html("http://www.imdb.com/title/tt1490017/") lego_movie <- lego_movie %>% html_nodes(".itemprop , .character a") %>% html_text() # follow cast links (".itemprop .itemprop") # grab tables of all movies and dates for each cast member (".year_column , b a") Desired Output: castMember movie year Will Arnett Lego