meta_system: Internal function to get, set or initialize system metadata

In koheiw/quanteda.core: Quantitative Analysis of Textual Data

Description

Sets or initializes system metadata for new objects.

Usage

meta_system(x, field = NULL)

meta_system(x, field = NULL) <- value

## S3 replacement method for class 'corpus'
meta_system(x, field = NULL) <- value

## S3 replacement method for class 'tokens'
meta_system(x, field = NULL) <- value

## S3 replacement method for class 'dfm'
meta_system(x, field = NULL) <- value

## S3 replacement method for class 'dictionary'
meta_system(x, field = NULL) <- value

meta_system_defaults()

Arguments

x	an object for which the metadata will be read or set
field	metadata field name(s); if NULL (default), return all metadata names
value	new value of the metadata field
source	character; the input object class

Value

meta_system returns a list with the object's system metadata. It is literally a wrapper to meta(x, field, type = "system")().

meta_system<- returns the object with the system metadata modified. This is an internal function and not designed for users!

meta_system_defaults returns a list of default system values, with the user setting the "source" value. This should be used to set initial system meta information.

Examples

corp <- corpus(c(d1 = "one two three", d2 = "two three four"))
# quanteda.core:::`meta_system<-`(corp, value = quanteda.core:::meta_system_defaults("example"))
quanteda.core:::meta_system(corp)

koheiw/quanteda.core documentation built on Sept. 21, 2020, 3:44 p.m.