search_frozen_geodesic: A pseudo-derivative, line search algorithm along frozen...

In tourr: Tour Methods for Multivariate Data Visualisation

A pseudo-derivative, line search algorithm along frozen geodesics.

Description

A pseudo-derivative, line search algorithm along frozen geodesics.

Usage

search_frozen_geodesic(
  current,
  index,
  tries,
  max.tries = 5,
  n = 5,
  frozen,
  cur_index = NA,
  ...
)

Arguments

current	starting projection
index	index function
tries	the counter of the outer loop of the opotimiser
max.tries	maximum number of iteration before giving up
n	number of random steps to take to find best direction
frozen	a matrix of frozen variables
cur_index	the index value of the current basis
...	other arguments being passed into the search_frozen_geodesic() These three functions perform a corresponding role to search_geodesic, find_best_dir and find_path_peak but for the frozen tour. They work by zero'ing out the frozen variables and travelling in that restricted subspace.

To do

eliminate these functions

tourr documentation built on Aug. 25, 2023, 1:08 a.m.