tosca (version 0.3-4)

filterID: Subcorpus With ID Filter

Description

Generates a subcorpus by restricting it to specific ids.

Usage

filterID(...)
# S3 method for default
filterID(text, id, ...)
# S3 method for textmeta
filterID(object, id, filtermeta = TRUE, ...)

Value

textmeta object if object is specified, else only the filtered text. If a textmeta object is returned its meta data are filtered to those texts which appear in the corpus by default (filtermeta).

Arguments

...

Not used.

text

Not necassary if object is specified, else should be object$text: list of article texts

id

Character: IDs the corpus should be filtered to.

object

A textmeta object

filtermeta

Logical: Should the meta component be filtered, too?

Examples

texts <- list(A="Give a Man a Fish, and You Feed Him for a Day.
Teach a Man To Fish, and You Feed Him for a Lifetime",
B="So Long, and Thanks for All the Fish",
C="A very able manipulative mathematician, Fisher enjoys a real mastery
in evaluating complicated multiple integrals.")

meta <- data.frame(id = c("C", "B"), date = NA, title = c("Fisher", "Fish"),
stringsAsFactors = FALSE)
tm <- textmeta(text = texts, meta = meta)

filterID(texts, c("A", "B"))
filterID(texts, "C")
filterID(tm, "C")
filterID(tm, "B")
filterID(tm, c("B", "A"), FALSE)