sentiment

An [R] package to perform (naive) sentiment analysis by scoring individual words, based on the affinity score defined by [AFINN] (http://www2.imm.dtu.dk/pubdb/views/publication_details.php?id=6010)

Install package from github

install.packages("devtools")
library("devtools")
install_github("sentiment", "andrie")

Sentiment analysis on strings:

sentiment(c("There is a terrible mistake in this work", "This is wonderful!"))

Sentiment analysis on twitteR data:

if(require(twitter)){
	library(twitteR)
	tweets  <- searchTwitter("#mcdonalds", n=25)
	sentiment(tweets[[1]])
	sapply(tweets, sentiment)
}