R: Generating ROC plot with shading based on FDR

fcauc.x {ROCS} | R Documentation

## Generating ROC plot with shading based on FDR

### Description

The function plots the ROC curve. It shades the area corresponding to acceptable FDR level. The FDR-controlled area under the curve (FCAUC) is calculated for the shaded area.

### Usage

    fcauc.x(x0, x1, FDR.cut = 0.2)

### Arguments

`x0` | Vector; the raw data of the null class.
`x1` | Vector; the raw data of the non-null class.
`FDR.cut` | The FDR level at which to shade the AUC and calculate the FCAUC.

### Value

The FCAUC value is returned.

### Author(s)

Tianwei Yu. Email: tianwei.yu@emory.edu.

### References

Yu T (2012) ROCS: Receiver Operating Characteristic Surface for Class-Skewed High-Throughput Data. PLoS ONE 7(7): e40598.

### See Also

fcauc.fptp

### Examples

    #perfect separation
    x0<-runif(1000)
    x1<-runif(100)+2

    fcauc.x(x0, x1)

    #partial separation
    x0<-rnorm(1000, mean=0, sd=1.5)
    x1<-rnorm(100, mean=3, sd=1)

    fcauc.x(x0, x1)

[Package ROCS version 1.3 Index]