Mid-point
Find the point half-way between two points along an ellipsoid
midPoint(p1, p2, a=6378137, f = 1/298.257223563)
p1 |
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 |
p2 |
As above |
a |
major (equatorial) radius of the ellipsoid |
f |
ellipsoid flattening. The default value is for WGS84 |
matrix with coordinate pairs
Elias Pipping and Robert Hijmans
midPoint(c(0,0),c(90,90)) midPoint(c(0,0),c(90,90), f=0)
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