sphet (version 1.5)

dist_functions: Distance measures available in distance

Description

The great circle distance is calculated by the function rdist.earth in library fields.

Details

The distance measures implemented in sphet are:

• 'euclidean':$\sqrt{\sum{(x_i - y_i)^2}}$
• 'chebyshev':$max(|x_i - y_i|)$
• 'braycur':$\frac{\sum{|x_i - y_i|}}{\sum{|x_i + y_i|}}$
• 'canberra':$\frac{\sum{|x_i - y_i|}}{\sum{|x_i| + |y_i|}}$
• 'gcircle': seespDists, which uses an approximation to the WGS84 spheroid.

See Also

gstslshet, distance, distance