time_sequence: Time each index evaluation for projections in the tour path.

In spinebil: Investigating New Projection Pursuit Index Functions

Time each index evaluation for projections in the tour path.

Description

Index evaluation timing may depend on the data distribution, we evaluate the computing time for a set of different projections to get an overview of the distribution of computing times.

Usage

time_sequence(d, t, idx, pmax)

Arguments

d	Input data in matrix format
t	List of projection matrices (e.g. interpolated tour path)
idx	Index function
pmax	Maximum number of projections to evaluate (cut t if longer than pmax)

Value

numeric vector containing all distances

Examples

d <- as.matrix(spiral_data(500, 4))
t <- purrr::map(1:10, ~ tourr::basis_random(4))
idx <- scag_index("stringy")
time_sequence(d, t, idx, 10)

spinebil documentation built on Nov. 5, 2025, 7:35 p.m.