# ecef2lla

Convert Earth-centered Earth-fixed (ECEF) coordinates to geodetic coordinates

## Syntax

``lla = ecef2lla(ecef)``
``lla = ecef2lla(ecef,model)``
``lla = ecef2lla(ecef,f,Re)``

## Description

example

````lla = ecef2lla(ecef)` converts the m-by-3 array of ECEF coordinates, `ecef`, to an m-by-3 array of geodetic coordinates (latitude, longitude and altitude), `lla`. Units are in meters.`lla = ecef2lla(ecef,model)` converts the coordinates for a specific ellipsoid planet. `lla = ecef2lla(ecef,f,Re)` converts the coordinates for a custom ellipsoid planet defined by flattening, `f`, and the equatorial radius, `Re`.```

## Examples

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Determine latitude, longitude, and altitude at an ECEF coordinate:

`lla = ecef2lla([4510731 4510731 0])`
```lla = 0 45.0000 999.9564```

Determine latitude, longitude, and altitude at multiple ECEF coordinates with the WGS84 ellipsoid model:

`lla = ecef2lla([4510731 4510731 0; 0 4507609 4498719], 'WGS84')`
```lla = 0 45.0000 999.9564 45.1358 90.0000 999.8659```

Determine latitude, longitude, and altitude at multiple coordinates with the custom ellipsoid model:

```f = 1/196.877360; Re = 3397000; lla = ecef2lla([4510731 4510731 0; 0 4507609 4498719], f, Re)```
```lla = 1.0e+06 * 0 0.0000 2.9821 0.0000 0.0001 2.9801```

## Input Arguments

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ECEF coordinates, specified as an m-by-3 array in meters.

Data Types: `double`

Ellipsoid planet model, specified as `'WGS84'`.

Data Types: `double`

Flattening at each pole, specified as a scalar.

Data Types: `double`

Equatorial radius, specified as a scalar in meters.

Data Types: `double`

## Output Arguments

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Geodetic coordinates (latitude, longitude, and altitude), returned as an m-by-3 array in [degrees degrees meters].

## Version History

Introduced in R2006b