koRpus (version 0.06-4)

FOG: Readability: Gunning FOG Index

Description

This is just a convenient wrapper function for readability.

Usage

FOG(txt.file, hyphen = NULL, parameters = list(syll = 3, const = 0.4, suffix
  = c("es", "ed", "ing")), ...)

Arguments

txt.file

Either an object of class kRp.tagged-class, a character vector which must be be a valid path to a file containing the text to be analyzed, or a list of text features. If the latte

hyphen

An object of class kRp.hyphen. If NULL, the text will be hyphenated automatically.

parameters

A list with named magic numbers and a vector with verb suffixes, defining the relevant parameters for the index, or one of "PSK" or "NRI".

...

Further valid options for the main function, see readability for details.

Value

• An object of class kRp.readability-class.

Details

Calculates the Gunning FOG index. In contrast to readability, which by default calculates all possible indices, this function will only calculate the index value.

If parameters="PSK", the revised parameters by Powers-Sumner-Kearl (1958) are used, and if parameters="NRI", the simplified parameters from the Navy Readability Indexes, respectively.

References

DuBay, W.H. (2004). The Principles of Readability. Costa Mesa: Impact Information. WWW: http://www.impact-information.com/impactinfo/readability02.pdf; 22.03.2011.

Powers, R.D, Sumner, W.A, & Kearl, B.E. (1958). A recalculation of four adult readability formulas, Journal of Educational Psychology, 49(2), 99--105.

Examples

FOG(tagged.text)