R: Kappa Statistic

Kappa {SDMTools} | R Documentation

## Kappa Statistic

### Description

`Kappa` estimates the Kappa statistic for model accuracy.

### Usage

    Kappa(mat)

### Arguments

`mat` | a confusion matrix of class 'confusion.matrix' from `confusion.matrix`

### Value

Returns a single value represting the Kappa statistic.

### Author(s)

Jeremy VanDerWal jjvanderwal@gmail.com

### See Also

`auc`, `omission`, `sensitivity`, `specificity`, `prop.correct`, `confusion.matrix`, `accuracy`

### Examples

    #create some data
    obs = c(sample(c(0,1),20,replace=TRUE),NA); obs = obs[order(obs)]
    pred = runif(length(obs),0,1); pred = pred[order(pred)]

    #calculate the confusion matrix
    mat = confusion.matrix(obs,pred,threshold=0.5)

    #calculate the Kappa statistic
    Kappa(mat)

[Package SDMTools version 1.1-221.2 Index]