instruction: Base instruction class

In leonardodiegues/chewie: Chewie

Description

instruction provides the guidelines to chewie scraping by setting all of searching and returning object parameters.

Usage

instruction(
  title,
  path,
  selector = "css",
  alternative_path = NULL,
  parse_as = NULL,
  pattern = NULL
)

instruction_set_result(x, result)

Arguments

title	an arbitrary name to the scraped object
path	a css or xpath path to the object to be scraped
selector	whether path/alternative_path is a css or xpath selector, defaults to NULL
alternative_path	an alternative css or xpath path to the object to be scraped
parse_as	indicates if an extractor should be applied to the resulting scraped item. Currently available extractors are: extract_text extract_numeric extract_table extract_date extract_datetime extract_timedelta extract_price.
pattern	a RegEx pattern to be applied before parsing

Value

a chewie_instruction object

Examples

sample_instruction <- instruction(
  title = "price_header",
  selector = "css",
  path = "h1:nth-of-type(1)",
  alternative_path = "h2:nth-of-type(2)",
  parse_as = "text"
)

leonardodiegues/chewie documentation built on Dec. 21, 2021, 10:41 a.m.