Slash {VGAM} | R Documentation

## Slash Distribution

### Description

Density function, distribution function, and random generation for the slash distribution.

### Usage

    dslash(x, mu=0, sigma=1, log=FALSE, smallno=.Machine$double.eps*1000)
    pslash(q, mu=0, sigma=1)
    rslash(n, mu=0, sigma=1)

### Arguments

`x, q` | vector of quantiles.
`n` | number of observations. Must be a single positive integer.
`mu, sigma` | the mean and standard deviation of the univariate normal distribution.
`log` | Logical. If `TRUE` then the logarithm of the density is returned.
`smallno` | See `slash`.

### Details

See `slash`, the VGAM family function for estimating the two parameters by maximum likelihood estimation, for the formula of the probability density function and other details.

### Value

`dslash` gives the density, and `pslash` gives the distribution function, `rslash` generates random deviates.

### Note

`pslash` is very slow.

### Author(s)

Thomas W. Yee and C. S. Chee

### See Also

`slash`.

### Examples

    ## Not run:
    x = seq(-5,5,length=201)
    plot(x, dslash(x), type="l", col="blue", ylab="f(x)", ylim=c(0,0.4),
         main="Standard Slash, Normal and Cauchy Densities", lwd=2)
    lines(x, dnorm(x), col="black", lty=2, lwd=2)
    lines(x, dcauchy(x), col="red", lty=3, lwd=2)
    legend(x=2, y=0.3, c("slash","normal","cauchy"), lty=1:3,
           col=c("blue","black","red"), lwd=2)

    plot(x, pslash(q=x), col="blue", type="l", ylim=0:1)
    ## End(Not run)

[Package VGAM version 0.7-9 Index]