Generic Quantile-Quantile Plot

Description

Constructs a quantile-quantile plot against a given reference distribution.

Usage

QQplot(x, a = 0.5, reference = c("normal", "exp", "student"), ...)

Arguments

Details

Special forms like ParetoQQ plots can also be created via this function. E.g., to create a ParetoQQ plot, merely pass log(data) in place of data as the first parameter and use reference = "exp" as the reference distribution. The ParetoQQ plot should provide a linear graph when a log transform of the data is plotted against the exponential distribution.

Value

Produces QQ-plot and returns invisibly a list of (x, y) pairs.

See Also

ppoints

Examples

QQplot(rnorm(1000), reference = "normal") 
QQplot(rexp(1000), reference = "exp", rate = 0.3) 

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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Type 'demo()' for some demos, 'help()' for on-line help, or
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Type 'q()' to quit R.

> library(QRM)
Loading required package: gsl
Loading required package: Matrix
Loading required package: mvtnorm
Loading required package: numDeriv
Loading required package: timeSeries
Loading required package: timeDate

Attaching package: 'QRM'

The following object is masked from 'package:base':

    lbeta

> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/QRM/QQPlot.Rd_%03d_medium.png", width=480, height=480)
> ### Name: QQplot
> ### Title: Generic Quantile-Quantile Plot
> ### Aliases: QQplot
> ### Keywords: hplot
> 
> ### ** Examples
> 
> QQplot(rnorm(1000), reference = "normal") 
> QQplot(rexp(1000), reference = "exp", rate = 0.3) 
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>