midPoint

Find the point half-way between two points along an ellipsoid

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

midPoint function

<dl> <dt>p1</dt>
<dd>longitude/latitude of point(s). Can be a vector of two numbers, a matrix of 2 columns (first one is longitude, second is latitude) or a SpatialPoints* object</dd> <dt>p2</dt>
<dd>As above</dd> <dt>a</dt>
<dd>major (equatorial) radius of the ellipsoid</dd> <dt>f</dt>
<dd>ellipsoid flattening. The default value is for WGS84</dd></dl>

Arguments

Author

Mid-point — midPoint

<dl>

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

 <dt>p2</dt>
<dd>As above</dd>

 <dt>a</dt>
<dd>major (equatorial) radius of the ellipsoid</dd>

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

</dl>

midPoint: Mid-point

Description

Usage

Value

Arguments

Author

Examples