Modifying just one line of the code found on theBioBucket blog post: Get No. of Google Search Hits with R and XML:
GoogleHits <- function(input)
{
require(XML)
require(RCurl)
url <- paste("https://www.google.com/search?q=",
input, sep = "") # modified line
CAINFO = paste(system.file(package="RCurl"), "/CurlSSL/ca-bundle.crt", sep = "")
script <- getURL(url, followlocation = TRUE, cainfo = CAINFO)
doc <- htmlParse(script)
res <- xpathSApply(doc, '//*/div[@id="resultStats"]', xmlValue)
cat(paste("\nYour Search URL:\n", url, "\n", sep = ""))
cat("\nNo. of Hits:\n") # get rid of cat text if not wanted
return(as.integer(gsub("[^0-9]", "", res)))
}
# Example:
no.hits <- GoogleHits("health%20hospital")
#Your Search URL:
#https://www.google.com/search?q=health%20hospital
#
#No. of Hits:
no.hits
#[1] 1170000000
I changed the url
assignment from
url <- paste("https://www.google.com/search?q=\"", input, "\"", sep = "")
to
url <- paste("https://www.google.com/search?q=", input, sep = "")