# unwrap

Unwrap a vector of phase angles.

## Syntax

u = unwrap(p)

u = unwrap(p,tol)

u = unwrap(p,tol,dim)

## Inputs

`p`- A vector or matrix of phase angles in radians.
`tol`- A scalar threshold that sets the maximum step between adjacent angles in radians.
Steps larger than
`tol`are reduced to less than tol by adding or subtracting multiples of 2*pi. The default is pi, and smaller values are treated as pi. `dim`- Dimension on which to perform the calculation.

## Outputs

- y
- The vector of unwrapped phase ngles.

## Example

```
p = tan(-3:0.5:3)
u = unwrap(p)
```

```
p = [Matrix] 1 x 13
0.14255 0.74702 2.18504 -14.10142 -1.55741 -0.54630 0.00000 0.54630
1.55741 14.10142 -2.18504 -0.74702 -0.14255
u = [Matrix] 1 x 13
0.14255 0.74702 2.18504 4.74814 4.72578 5.73688 6.28319 6.82949 7.84059
7.81823 10.38133 11.81935 12.42382
```