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# NIDLTDOACoordinatesType

The possible coordinate types for Downlink Time-Difference-of-Arrival measurement updates.

```
enum NIDLTDOACoordinatesType
```

## Overview

The [`NIDLTDOAMeasurement`](/documentation/NearbyInteraction/NIDLTDOAMeasurement) class [`coordinates`](/documentation/NearbyInteraction/NIDLTDOAMeasurement/coordinates) property is of this type.

For more information on Downlink Time-Difference-of-Arrival measurements, see [`NIDLTDOAConfiguration`](/documentation/NearbyInteraction/NIDLTDOAConfiguration).

## Topics

### Identifying a coordinate type

[`case geodetic`](/documentation/NearbyInteraction/NIDLTDOACoordinatesType/geodetic)

A coordinate type that specifies a latitude, longitude, and altitude triplet.

[`case relative`](/documentation/NearbyInteraction/NIDLTDOACoordinatesType/relative)

A coordinate type that specifies a 3D Cartesian triplet.

### Creating a coordinate type

[`init?(rawValue: Int)`](/documentation/NearbyInteraction/NIDLTDOACoordinatesType/init(rawValue:))

Initializes a coordinate type for a Downlink Time-Difference-of-Arrival measurement.

## Relationships

### Conforms To

[`Hashable`](/documentation/Swift/Hashable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`Equatable`](/documentation/Swift/Equatable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

---

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