# Documentation

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# forward

Class: map.geodesy.RectifyingLatitudeConverter
Package: map.geodesy

Geodetic latitude to rectifying latitude

## Syntax

`mu = forward(converter,phi)mu = forward(converter,phi,angleUnit)`

## Description

`mu = forward(converter,phi)` returns the rectifying latitude corresponding to geodetic latitude `phi`.

`mu = forward(converter,phi,angleUnit)` specifies the units of input `phi` and output `mu`.

## Input Arguments

 `converter` Rectifying latitude converter, specified as a scalar `map.geodesy.IsometricLatitudeConverter` object. `phi` Geodetic latitude of one or more points, specified as a scalar value, vector, matrix, or N-D array of `singles` or `doubles`. Values must be in units that match the input argument `angleUnit`, if supplied, and in degrees, otherwise. `angleUnit` Units of angles, specified as `'degrees'` or `'radians'`. Default: `‘degrees'`

## Output Arguments

 `mu` Rectifying latitude of each element in `phi`, returned as a scalar value, vector, matrix, or N-D array. Units are determined by the input argument `angleUnit`, if supplied; values are in degrees, otherwise.

## Examples

expand all

```phi = [-90 -67.5 -45 -22.5 0 22.5 45 67.5 90]; conv = map.geodesy.RectifyingLatitudeConverter(wgs84Ellipsoid); mu = forward(conv,phi)```
```mu = -90.0000 -67.3978 -44.8557 -22.3981 0 22.3981 44.8557 67.3978 90.0000 ```
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