Changelog

Source: NEWS.md

crantr 0.3.0

Fast local synapse snapshots for connectivity queries at any time up to the present, plus mirroring across the midline and fast L2 dotprops for mirrored NBLAST. See vignette("synapse-snapshots").

• New local synapse snapshot functions, using the snapshot code in aedes (Suggests): crant_use_snapshot(), crant_download_snapshot(), crant_update_snapshot(), crant_synapse_data(), crant_snapshot_root() and crant_publish_snapshot(). The first download is about 1.8 GB; daily checkpoints are then fetched automatically (#4).
• crant_partner_summary() and crant_partners() gain method = c("auto", "cave", "local") and explicit version/timestamp; "auto" answers from the selected snapshot when possible, otherwise CAVE as before (#4).
• data-raw scripts to download a CAVE synapse table and build the first snapshot, and an internal crant_synsnap_server() with a cron script (inst/scripts/synsnap-cron.sh) to make and publish daily checkpoints (#4).
• New crant_mirror() mirrors points, neurons, meshes and dotprops across the midline (nm or microns), keeping dotprops tangent vectors (#5).
• New crant_mirror_tps dataset: a thin plate spline mirror registration built from CRANT synapse density (#5).
• New crant_read_l2dp() quickly fetches dotprops suitable for NBLAST from the L2 cache, via python fafbseg using the CRANT token (#6).
• New vignette on synapse snapshots (fc00222).
• Fixed crant_updateids() bookkeeping of old ids during the position-based update (3eb567b).
• Documentation regenerated with roxygen2 8.1.0 (01fed0b).

Full Changelog: https://github.com/flyconnectome/crantr/compare/7861ea3…v0.3.0

crantr 0.2.1

• New crant_key_point() returns a “good” annotation point on a neuron: the principal branch point of its L2 skeleton, with the neuron optionally rerooted onto its furthest endpoint first. Shares the dataset-agnostic fafbseg::key_point_from_neuron() helper but reads via crant_read_l2skel() because the CRANT segmentation is hosted on a separate CAVE server that fafbseg::read_l2skel() cannot currently reach (requires fafbseg (>= 0.15.15)).

crantr 0.2.0

Metadata rework, now backed by fafbseg::cam_meta() (requires fafbseg (>= 0.15.12)):

• crant_meta() is now a thin wrapper around fafbseg::cam_meta() pointed at the CRANTb_meta seatable. Column normalisation to the coconat/crantr schema is opt-in via normalise_colnames = TRUE, and translate_ids is exposed to keep returned root ids consistent with a requested version/timestamp.
• crant_meta() gains drop_status (default "DUPLICATED") so CRANT’s known duplicate rows are filtered by default; pass drop_status = NULL to keep them.
• crant_ids() gains na.rm (default FALSE) to drop missing root ids. The coconat id functions set this so CRANTb_meta’s incomplete rows no longer surface as spurious null-segment "0" ids.
• Fixed crant_ids() query lookup and its integer64 default.
• The legacy metadata cache API is deprecated in favour of the above.

crantr 0.1.0

• Initial CRAN submission.