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# Longitude

> Use the Sigma Longitude function to obtain the longitude of a point.

The **Longitude** function obtains the longitude of a point.

The input column must be a valid location within the [Geographic Coordinate System.](https://en.wikipedia.org/wiki/Geographic_coordinate_system)

This function isn't compatible with all data platform connections. To check if your connection supports it, see [Supported data platforms and feature compatibility](/docs/region-warehouse-and-feature-support#supported-data-platforms-and-feature-compatibility).

## Syntax

```
Longitude(point)
```

The function argument is:

<dl>
  <dt>
    point
  </dt>

  <dd>
    Required
  </dd>

  <dd>
    A valid point value that can be located on the Earth's sphere; must comply with the 

    <a href="https://en.wikipedia.org/wiki/Geographic_coordinate_system" target="_self">Geographic Coordinate System</a>
  </dd>

  <dd>
    The function does not support other coordinate types, such as lines, polygons, and so on.
  </dd>
</dl>

## Example

```
Longitude([Coordinates])
```

The function **Longitude** extracts the latitude of a point from the **Coordinate** column:

![](https://files.buildwithfern.com/sigma.docs.buildwithfern.com/006dc895ea47c94943f14c909b9d35da6556fd9211cd9f2fd3dc2e370610ae88/assets/docs-images/ed0e95d-function-logitude-example.png)

## Related resources

* [Latitude](/docs/latitude)
* [Geography functions](/docs/geography-functions)