# cdfLaplace¶

## Purpose¶

Computes the cumulative distribution function for the Laplace distribution.

## Format¶

p = cdfLaplace(x, loc, scale)
Parameters:
• x (NxK matrix, Nx1 vector or scalar.) – Values at which to evaluate the cumulative distribution function for the Laplace distribution.

• loc (NxK matrix, Nx1 vector or scalar) – Location parameter, ExE conformable with x.

• scale (NxK matrix, Nx1 vector or scalar) – Scale parameter; ExE conformable with x. $$0 < scale$$.

Returns:

p (NxK matrix, Nx1 vector or scalar) – Each element in p is the cumulative distribution function for the Laplace distribution evaluated at the corresponding element in x.

## Examples¶

// Values of interest
x = 2;

// Location parameter
loc = 0;

// Scale parameter
scale = 3;

p = cdfLaplace(x, loc, scale);


After the above code, P will equal:

0.7433


## Remarks¶

The cumulative distribution function for the Laplace distribution is defined as

$\begin{split}f(x, \mu, b) = \begin{cases} \frac{1}{2} exp(\frac{(x-\mu)}{b}), & x \lt \mu\\ 1 - \frac{1}{2} exp(-\frac{(x - \mu)}{b}), & x \ge \mu \end{cases}\end{split}$