Rice {VGAM} | R Documentation

## The Rice Distribution

### Description

Density and random generation for the Rician distribution.

### Usage

    drice(x, vee, sigma, log=FALSE)
    rrice(n, vee, sigma)

### Arguments

`x` | vector of quantiles.
`n` | number of observations. Must be a positive integer of length 1.
`vee, sigma` | See `riceff`.
`log` | Logical. If `log=TRUE` then the logarithm of the density is returned.

### Details

See `riceff`, the VGAM family function for estimating the two parameters, for the formula of the probability density function and other details.

### Value

`drice` gives the density, `rrice` generates random deviates.

### Author(s)

T. W. Yee

### See Also

`riceff`.

### Examples

    ## Not run:
    x = seq(0.01, 7, len=201)
    plot(x, drice(x, vee=0, sigma=1), type="n", las=1,, ylab="",
         main="Density of Rice distribution for various values of v")
    sigma = 1; vee = c(0,0.5,1,2,4)
    for(ii in 1:length(vee)) lines(x, drice(x, vee[ii], sigma), col=ii)
    legend(x=5, y=0.6, legend=as.character(vee),
           col=1:length(vee), lty=1)
    ## End(Not run)

[Package VGAM version 0.7-9 Index]