QCA.methods: Methods for "QCA" an object

In QCA3: Yet another package for Qualitative Comparative Analysis

Description

Various methods for object from reduce

Usage

## S3 method for class 'QCA'
print(x, traditional = TRUE, show.truthTable = FALSE, ...)

## S3 method for class 'QCA'
summary(object, traditional = TRUE, show.case = TRUE, ...)

## S3 method for class 'QCA'
object[which]

## S3 method for class 'QCA'
update(object,...,evaluate = TRUE)

Arguments

x	an object of class 'QCA', which is usually returned from reduce.
traditional	logical, use traditional symbol when it is TRUE. Otherwise, use Tosmana-style symbol.
show.truthTable	logical, show truthTable when it is TRUE. Of course, it has effect only when the 'keepTruthTable' argument of reduce is set to TRUE.
object	an object of class 'QCA', which is usually returned from reduce.
show.case	logical, show case names when it is TRUE.
which	numeric vector, indices specifying elements to extract. Extraction of a solution or (prime implicant) is essentially a extraction on a list. you can refer to [ for more details.
...	For print.QCA and summary.QCA, currently not used. For update, additional arguments to the call, or arguments with changed values. Use 'name=NULL' to remove the argument 'name'.
evaluate	when TRUE, return the evaluated result which is an object of QCA class. Otherwise, it returns the call.

Details

The traditional way uses upper-case letters representing 1 and and lower-case letters reprensenting 0. The Tosmana-style uses condition{value} to represent the prime implicants.

The summary method calculates the number of cases covered by each implicant, the percentage of explained cases, the number of cases (percentage of explained cases) covered by multiple implications.It also shows the case names covered by each implicant, with (n) indicating the number of implicants coving the case(s).

Value

print method does not return any value.

summary method returns an object of class "summary.QCA".

The index method returns an object of class "QCA".

update method returns a new "QCA" object if evaluate is TRUE, the call if FALSE.

Author(s)

Ronggui HUANG

See Also

reduce and constrReduce

QCA3 documentation built on May 2, 2019, 4:49 p.m.