Simple function to acquire genders for a vector of persons first names.

genderize.io.R

require('jsonlite')

#Get genders for a vector of first names.
#Usage: genders <- getGenders(c('joão', 'fábio', 'lúcia', 'rúbens'))
getGenders <- function (raw_names) {
  url_api <- 'http://api.genderize.io?'
  for(i in 1:length(raw_names)) {
    url_api <- paste(url_api, 'name[', i - 1, ']=', 
                      iconv(raw_names[i], to='ASCII//TRANSLIT'), 
                        '&', 
                          sep = '') 
  }
  fromJSON(url_api)
}