---
title: "new CoordinateSpan(latitudeDelta, longitudeDelta)"
framework: mapkitjs
role: symbol
role_heading: Constructor
path: mapkitjs/coordinatespan/coordinatespanconstructor
---

# new CoordinateSpan(latitudeDelta, longitudeDelta)

Creates a new coordinate span object with the specified latitude and longitude deltas.

## Declaration

```data
constructor(latitudeDelta?: number, longitudeDelta?: number);
```

## Parameters

- `latitudeDelta`: The amount of north-to-south distance (in degrees) to display for the map region. Unlike longitudinal distances, which vary based on the latitude, one degree of latitude is always approximately 111 km (69 mi.).
- `longitudeDelta`: The amount of east-to-west distance (in degrees) to display for the map region. The number of kilometers (or miles) that a longitude range spans varies based on the latitude. For example, one degree of longitude spans a distance of approximately 111 km (69 miles mi.) at the equator, approximately 88 km (or 55mi.) at 37º north latitude (the latitude of San Francisco), and shrinks to 0 km (0 mi.) at the poles.

## Discussion

Discussion The latitude and longitude delta parameters need to be positive numbers. MapKit JS treats negative numbers as zero. const span = new mapkit.CoordinateSpan(.016, .016); // The initializer requires parameters in the order of latitude delta, longitude delta.

## See Also

### Creating a coordinate span

- [CoordinateSpanData](mapkitjs/coordinatespandata.md)