Get paper count and paper dataframe by joining keywords as vectors

Get paper count and paper dataframe by joining keywords as vectors

join_keywords(..., get_papers = TRUE, bool_op = "AND", sleep = 3,
  verbose = FALSE)

Arguments

...	input character vectors
get_papers	generate or not a dataframe with papers
bool_op	boolean operator. It can be AND or OR
sleep	seconds to wait before a new quiery to OnePetro
verbose	show progress if TRUE

Examples

# NOT RUN {
major  <- c("water-injection", "water injection")
minor  <- c("machine-learning", "machine learning")
lesser <- c("algorithm")
p.df <- join_keywords(major, minor, lesser, get_papers = TRUE,
                      sleep = 2, verbose = FALSE)
# }