WebSource: Read Web Content and respective Link Content from feedurls.

In tm.plugin.webmining: Retrieve Structured, Textual Data from Various Web Sources

Description

WebSource is derived from Source. In addition to calling the base Source constructor function it also retrieves the specified feedurls and pre–parses the content with the parser function. The fields $Content, $Feedurls $Parser and $CurlOpts are finally added to the Source object.

Usage

WebSource(feedurls, class = "WebXMLSource", reader, parser,
  encoding = "UTF-8", curlOpts = curlOptions(followlocation = TRUE,
  maxconnects = 20, maxredirs = 10, timeout = 30, connecttimeout = 30),
  postFUN = NULL, retrieveFeedURL = TRUE, ...)

Arguments

feedurls	urls from feeds to be retrieved
class	class label to be assigned to Source object, defaults to "WebXMLSource"
reader	function to be used to read content, see also readWeb
parser	function to be used to split feed content into chunks, returns list of content elements
encoding	specifies default encoding, defaults to 'UTF-8'
curlOpts	a named list or CURLOptions object identifying the curl options for the handle. Type listCurlOptions() for all Curl options available.
postFUN	function saved in WebSource object and called to retrieve full text content from feed urls
retrieveFeedURL	logical; Specify if feedurls should be downloaded first.
...	additional parameters passed to WebSource object/structure

Value

WebSource

Author(s)

Mario Annau

tm.plugin.webmining documentation built on May 2, 2019, 1:10 p.m.