koRpus (version 0.06-5)

dale.chall: Readability: Dale-Chall Readability Formula

Description

This is just a convenient wrapper function for readability.

Usage

dale.chall(txt.file, word.list, parameters = c(const = 64, dword = 0.95, asl = 0.69), ...)

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 latter, calculation is done by readability.num.

word.list

A vector or matrix (with exactly one column) which defines familiar words. For valid results the long Dale-Chall list with about 3000 words should be used.

parameters

A numeric vector with named magic numbers, defining the relevant parameters for the index.

...

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

Value

An object of class kRp.readability-class.

Details

Calculates the New Dale-Chall Readability Formula. In contrast to readability, which by default calculates all possible indices, this function will only calculate the index value.

If parameters="PSK", the parameters by Powers-Sumner-Kearl (1958) are used, and if parameters="old", the original parameters by Dale-Chall (1948), respectively.

This formula doesn't need syllable count.

Examples

## Not run: 
# dale.chall(tagged.text, word.list=new.dale.chall.wl)
# ## End(Not run)