phutil 0.0.1

This is a new submission to CRAN.

Goals

The {phutil} package is intended to be a
low-level package for hosting persistence data. It is part of the TDAverse
suite of packages, which are designed to provide a collection of packages for
enabling machine learning and data science tasks using persistent homology.

Current features

The package currently exposes:

• a new data structure (the
  persistence
  class) for hosting persistence data;
• a set of utility functions for coercing persistence data to and from
  other data structures (e.g., data.frame, tibble, list, matrix,PHom and
  diagram classes);
• a set of utility functions for computing Bottleneck and Wasserstein distances
  between two persistence diagrams
  (bottleneck_distance()
  and
  wasserstein_distance())
  and from a sample of persistence diagrams in a pairwise manner
  (bottleneck_pairwise_distance()
  and
  wasserstein_pairwise_distance()).

Dependencies

Messages, warnings and errors are relayed to the user using the
{rlang} package and the
{cli} package which are both licensed under the MIT
license and with no dependency trail.

Computation of distances is performed using the BSD-licensed
Hera C++ library. The code interfacing R
and C++ is generated by the header-only {cpp11}
package which is MIT-licensed. Computation of pairwise distances is parallelized
over the number of pairs using OpenMP.