# coincid: Produces a coincidence matrix In QCA3: Yet another package for Qualitative Comparative Analysis

## Description

Produce a coincidence matrix from a crip set or fuzzy set data.

## Usage

 ```1 2 3 4 5 6``` ```coincid(x, standardized = FALSE, use = c("complete", "pairwise")) ## S3 method for class 'coincid' print(x, digits = 3, ...) overlap(x, y) ```

## Arguments

 `x` x is a dataframe of crip set or fuzzy set data, which ranges from 0 to 1. `y` y is a dataframe of crip set or fuzzy set data, which ranges from 0 to 1. `standardized` When TRUE, produce the standardized coincidence scores. `use` The method of handling missing data. "complete" means listwise deletion and "pairwise" means pairwise deletion. `digits` a non-null value for 'digits' specifies the minimum number of significant digits to be printed in values. `...` arguments passed to default method of print.

## Details

Coincidence measures the amount of overlap or coincidence between two sets or configurations. The formula is: `sum(pmin(x,y))/sum(pmax(x,y))`. When standardized is TRUE, the formular is: `sum(pmin(x,y))/min(sum(x),sum(y))`.

## Value

A coincidence matrix.

Ronggui HUANG

## References

Ragin, Charles C. 2006. "Set Relations in Social Research: Evaluating Their Consistency and Coverage." Political Analysis 14 (3) : 291-310

`suffnec`
 `1` ```coincid(CoD[,c("cod","econdev","ethlihom")]) ```