finalBearing

Get the final direction (bearing) when arriving at <code>p2</code> after starting from <code>p1</code> and following the shortest path on an ellipsoid (following a geodetic) or on a sphere (following a great circle).

 spatial 

Spherical trigonometry for geographic applications. That is, compute distances and related measures for angular (longitude/latitude) locations.

Robert Hijmans

geosphere

Spherical Trigonometry

Robert J. Hijmans

Charles Karney

Ed Williams

Chris Vennes

finalBearing function

<dl> <dt>p1</dt>
<dd>longitude/latitude of point(s). Can be a vector of two numbers, a matrix of 2 columns (first column is longitude, second column is latitude) or a SpatialPoints* object</dd> <dt>p2</dt>
<dd>as above</dd> <dt>a</dt>
<dd>major (equatorial) radius of the ellipsoid. The default value is for WGS84</dd> <dt>f</dt>
<dd>ellipsoid flattening. The default value is for WGS84</dd> <dt>sphere</dt>
<dd>logical. If <code>TRUE</code>, the bearing is computed for a sphere, instead of for an ellipsoid</dd>
 
</dl>

Arguments

This function calls GeographicLib code by C.F.F. Karney

Author

Final direction — finalBearing

<dl>

 <dt>p1</dt>
<dd>longitude/latitude of point(s). Can be a vector of two numbers, a matrix of 2 columns (first column is longitude, second column is latitude) or a SpatialPoints* object</dd>

 <dt>p2</dt>
<dd>as above</dd>

 <dt>a</dt>
<dd>major (equatorial) radius of the ellipsoid. The default value is for WGS84</dd>

 <dt>f</dt>
<dd>ellipsoid flattening. The default value is for WGS84</dd>

 <dt>sphere</dt>
<dd>logical. If <code>TRUE</code>, the bearing is computed for a sphere, instead of for an ellipsoid</dd>
 
</dl>

finalBearing: Final direction

Description

Usage

Value

Arguments

Author

References

See Also

Examples