Changelog • fiber

fiber 0.1.2

Added bundle_set S7 class — a named collection of bundle objects for multi-subject or multi-session studies.
Added is_bundle_set() predicate, format()/print()/length()/names()/[[/[ methods for bundle_set.
Added as_bundle_set() generic with methods for bundle_set (identity) and bundle (wrap).
Added bind_bundle_sets() to combine named bundle objects and/or bundle_set objects into a single bundle_set.
Relaxed the streamline validator: @point_data entries no longer need to be numeric (any vector of the correct length is accepted); @streamline_data entries no longer need to be numeric either (any scalar is accepted). Non-numeric @point_data entries are dropped with a warning when reparametrize() is called, since they have no natural arc-length interpolant.
Added missing \value documentation to the compute_hausdorff_distance() catch-all method (#CRAN).
Replaced \dontrun{} with if (requireNamespace("dti", quietly = TRUE)) {} in the as_dwifiber() example (#CRAN).

Improved documentation of S7 classes, generics and methods following the release of roxygen2 8.0.0.
Removed redundant new_streamline() and new_bundle() constructors.
Added coercers from and to the dwiFiber S4 class of the dti package.
Refactored shape descriptors API.
Rewrote pairwise Hausdorff distance matrix using C++ via the cpp11 package.
Created the tractoverse GitHub organization and transferred fiber repository to it.

The package has been rebuilt from scratch around two S7 classes: streamline and bundle. The previous tibble-based streamline and list-based tract are removed.

new_streamline() / new_bundle() constructors for the S7 classes.
bind_bundles() combines any mix of streamlines and bundles into a single bundle.
reparametrize() resamples a streamline or every streamline in a bundle onto a uniform arc-length grid.
get_euclidean_length(), get_curvilinear_length(), get_sinuosity() — geometric shape scalars.
get_curvature(), get_torsion() — full curvature/torsion profiles or summary scalars ("mean", "sd", "max").
get_hausdorff_distance() — symmetric Hausdorff distance between two streamlines.