frechetMedian {manifold}

Calculate the Fréchet median

Description

Calculate the Fréchet median

Usage

frechetMedian(mfd, X, ...)

## Default S3 method:
frechetMedian(
  mfd,
  X,
  mu0,
  weight = NULL,
  tol = 1e-09,
  maxit = 1000,
  alpha = 1,
  ...
)

Arguments

mfd

A manifold object created by createM

X

A matrix with each column being a point on the manifold.

...

Passed into specific methods

mu0

A matrix of starting points. Each column corresponds to a starting point. If there are multiple columns, then a multistart algorithm is used.

weight

A vector of weights for the observations

tol

The threshold for determining convergence

maxit

Maximum iteration

alpha

The step size parameter. See Fletcher et al. (2008) CVPR

Value

A matrix with 1 column containing the Fréchet median

Methods (by class)

• frechetMedian(default): Default method