dist_functions: Distance measures available in distance

In sphet: Estimation of Spatial Autoregressive Models with and without Heteroskedastic Innovations

Description

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

Details

The distance measures implemented in sphet are:

• 'euclidean': √{∑{(x_i - y_i)^2}}

• 'chebyshev': max(|x_i - y_i|)

• 'braycur': \frac{∑{|x_i - y_i|}}{∑{|x_i + y_i|}}

• 'canberra': \frac{∑{|x_i - y_i|}}{∑{|x_i| + |y_i|}}

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

Author(s)

Gianfranco Piras [e-mail]

See Also

gstslshet, distance, distance

sphet documentation built on May 4, 2020, 3 p.m.