Class Fix

constructor

• new Fix(latitude: number, longitude: number): Fix

  Parameters

  • latitude: number

    The latitude, in degrees, of this fix.
  • longitude: number

    The longitude, in degrees, of this fix.

  Returns Fix

Readonlylatitude

Readonlylongitude

Static ReadonlyFT

Static ReadonlyNMI

Static ReadonlyR

bearingIntersection

• bearingIntersection(bearing: number, other: Fix, otherBearing: number): Fix

  Find the intersection point given two start points and bearings from those points.

  Parameters

  • bearing: number

    The bearing from this fix, in degrees from true north.
  • other: Fix

    The other fix.
  • otherBearing: number

    The bearing from the other fix, in degrees from true north.

  Returns Fix

  A new Fix at the intersection point.

destination

• destination(bearing: number, distance: number): Fix

  Find the destination point from the current position given a bearing and distance.

  Uses the haversine formula to compute the new latitude and longitude after travelling a specified distance along a given bearing on the Earth’s surface.

  Parameters

  • bearing: number

    The bearing from this fix, in degrees from true north.
  • distance: number

    The distance, in nautical miles.

  Returns Fix

  A new Fix at the destination point.

distance

• distance(other: Fix): number

  Find the great circle distance between two fixes.

  Parameters

  • other: Fix

    The other fix.

  Returns number

  The distance between the two fixes, in metres.

initialBearing

• initialBearing(other: Fix): number

  Find the initial bearing (forward azimuth) from this fix to another.

  Parameters

  • other: Fix

    The other fix.

  Returns number

  The initial bearing (forward azimuth), in degrees from true north.

toCartesian

• toCartesian(): [x: number, y: number, z: number]

  Get the three-dimensional cartesian coordinates of this fix.

  Returns [x: number, y: number, z: number]

toRadians

• toRadians(): [φ: number, λ: number]

  Get the coordinates of this fix in radians.

  Returns [φ: number, λ: number]

StaticdegToRad

• degToRad(deg: number): number

  Convert degrees to radians.

  Parameters

  • deg: number

    Degrees.

  Returns number

  Radians.

StaticfromCartesian

• fromCartesian(coordinates: readonly [number, number, number]): Fix

  Create a fix from 3-dimensional cartesian coordinates.

  Parameters

  • coordinates: readonly [number, number, number]

    3D cartesian coordinates.

  Returns Fix

StaticfromDms

• fromDms(latitude: string, longitude: string): Fix

  Create fix from DMS coordinates string.

  This method accepts a wide range of formats and notations for DMS (degrees, minutes, seconds) coordinates. However, the following criteria must always be satisfied:

  • Degrees, minutes, and seconds must all be present (even if 0), and in that order.
  • Degrees ∈ [0, 180).
  • Minutes ∈ [0, 60).
  • Seconds ∈ [0, 60).
  • A cardinal direction must be indicated by the first occurrence of either a case-insensitive character N, E, S, or W, or a ‘+’, dash (‘-’), or minus (‘−’) sign, present anywhere in the coordinate string.

  Parameters

  • latitude: string

    Latitude in DMS.
  • longitude: string

    Longitude in DMS.

  Returns Fix

  Example

  fromDMS("512930N", "0011311W")
  Copy

  Example

  fromDMS("512839.63N", "0002559.82W")
  Copy

  Example

  fromDMS("51° 34' 45.0732\" N", "0° 36' 29.8230\" E")
  Copy

StaticfromRadians

• fromRadians(φ: number, λ: number): Fix

  Create a new fix from latitude and longitude in radians.

  Parameters

  • φ: number

    Latitude, in radians.
  • λ: number

    Longitude, in radians.

  Returns Fix

StaticradToDeg

• radToDeg(rad: number): number

  Convert radians to degrees.

  Parameters

  • rad: number

    Radians.

  Returns number

  Degrees.