Sets up the necessary backend for the RW process.

RW(gamma2 = NULL)

## Arguments

gamma2

A double value for the variance $$\gamma ^2$$

## Value

An S3 object with called ts.model with the following structure:

process.desc

Used in summary: "RW"

theta

$$\sigma$$

plength

Number of parameters

print

String containing simplified model

desc

y desc replicated x times

obj.desc

Depth of parameters e.g. list(1)

starting

Guess starting values? TRUE or FALSE (e.g. specified value)

## Note

We consider the following model: $$Y_t = \sum\nolimits_{t=0}^{T} \gamma_0*Z_t$$ where $$Z_t$$ is iid and follows a standard normal distribution.

James Balamuta

## Examples

RW()
RW(gamma2=3.4)