tm (version 0.4)

readNewsgroup: Read In a Newsgroup Document

Description

Returns a function which reads in a newsgroup document as found in the UCI KDD newsgroup data set.

Usage

readNewsgroup(DateFormat = "%d %B %Y %H:%M:%S", ...)

Arguments

DateFormat

the format of the Date header in the newsgroup document.

...

arguments for the generator function.

Value

• A function with the signature elem, language, id:
• elem
  A list with the two named elements content and uri. The first element must hold the document to be read in, the second element must hold a call to extract this document. The call is evaluated upon a request for load on demand.
• language
  A character vector giving the text's language.
• id
  A character vector representing a unique identification string for the returned text document.
• The function returns a NewsgroupDocument representing content.

Details

Formally this function is a function generator, i.e., it returns a function (which reads in a newsgroup document) with a well-defined signature, but can access passed over arguments (e.g., to specify the format of the Date header in the newsgroup document via DateFormat) via lexical scoping.

See Also

Use getReaders to list available reader functions.

See strptime for date format specifications.