# cdfsla: Cumulative Distribution Function of the Slash Distribution In lmomco: L-Moments, Censored L-Moments, Trimmed L-Moments, L-Comoments, and Many Distributions

## Description

This function computes the cumulative probability or nonexceedance probability of the Slash distribution given parameters (ξ and α) of the distribution provided by `parsla` or `vec2par`. The cumulative distribution function is

F(x) = Φ(Y) - [φ(0) - φ(Y)]/Y \mbox{,}

for Y \ne 0 and

F(x) = 1/2 \mbox{,}

for Y = 0, where f(x) is the probability density for quantile x, Y = (x - ξ)/α, ξ is a location parameter, and α is a scale parameter. The function Φ(Y) is the cumulative distribution function of the Standard Normal distribution function, and φ(Y) is the probability density function of the Standard Normal distribution.

## Usage

 `1` ```cdfsla(x, para) ```

## Arguments

 `x` A real value vector. `para` The parameters from `parsla` or `vec2par`.

## Value

Nonexceedance probability (F) for x.

W.H. Asquith

## References

Rogers, W.H., and Tukey, J.W., 1972, Understanding some long-tailed symmetrical distributions: Statistica Neerlandica, v. 26, no. 3, pp. 211–226.

`pdfsla`, `quasla`, `lmomsla`, `parsla`
 ```1 2``` ``` para <- c(12,1.2) cdfsla(50,vec2par(para,type='sla')) ```