save_and_scrapeCDC: Global wrapper function for generating, saving and scraping...

In nealhaddaway/CDCscraper: Scrapes Citation Information From the website for the Centers for Disease Control and Prevention

Description

Function wraps the 'buildCDClinks()', 'save_codes()', and scrape functions.

Usage

save_and_scrapeCDC(
  and_terms = "",
  not_terms = "",
  exact_phrase = "",
  or_terms = "",
  date_from = "",
  date_to = "",
  pages = 1,
  start_page = 1,
  language = "",
  browser = "firefox"
)

Arguments

and_terms	Vector of alphanumeric terms searched using the AND Boolean operator, specified by the CDC as 'with all of the words'.
not_terms	Vector of alphanumeric terms searched using the NOT Boolean operator, specified by the CDC as 'without the words'.
exact_phrase	Vector of alphanumeric terms enclosed in inverted commas and searched as phrases (e.g. "large cat"), specified by the CDC as 'with the exact phrase'.
or_terms	Vector of alphanumeric terms searched using the OR Boolean operator, specified by the CDC as 'with at least one of the words'.
date_from	The date (e.g. 01/01/2000) from which searching will be performed (inclusive). If no value provided, all dates are searched.
date_to	The date (e.g. 01/10/2020) to which searching will be performed (inclusive). If no value provided, all dates are searched.
pages	Integer for the number of pages of search results to be returned (one link per page). A maximum of 100 pages can be displayed in the CDC. The default value is 1.
start_page	Integer specifying which page(s) of search results should be displayed. If multiple pages are selected, multiple URLs are returned, one for each page of ten search results.
language	Two-letter language code for search language. The default is 'en' (English).
browser	The name of the browser used for scraping. Default is 'firefox'.

Value

A dataframe containing all extractable information from all html files in the working directory.

Examples

and_terms <- c('disease', 'spread')
not_terms <- c('animal', 'fish')
exact_phrase <- c('corona virus')
or_terms <- c('pandemic', 'global')
date_from <- '01/01/1980'
date_to <- '10/11/2020'
info <- save_and_scrapeCDC(and_terms = and_terms,
    not_terms = not_terms,
    exact_phrase = exact_phrase,
    or_terms = or_terms,
    date_from = date_from,
    date_to = date_to,
    pages = 3)
head(info);

nealhaddaway/CDCscraper documentation built on Oct. 21, 2020, 5:20 a.m.