Distances made metric — tda_dmet1 • tdaR

TDA's dmet1: adjusts a distance matrix (given as an undirected valued graph) toward metricity.

Usage

tda_dmet1(d, tolerance = 1e-04, max_iterations = 20, ...)

Arguments

d: symmetric distance matrix.
tolerance, max_iterations: deviation tolerance and cap.
...: passed to tda_run.

Value

the output file's lines.

Examples

# 5 breaks the triangle inequality (1 + 2 < 5), so the
# metricized matrix shortens it to 3
d <- rbind(c(0, 1, 5), c(1, 0, 2), c(5, 2, 0))
r <- tda_dmet1(d)
r$modified
#>      [,1] [,2] [,3]
#> [1,]    0    1    3
#> [2,]    1    0    2
#> [3,]    3    2    0