sphet (version 1.7)

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': see spDists, which uses an approximation to the WGS84 spheroid.

See Also

gstslshet, distance, distance