Module debug 

Debug information export utilities for path calculation (US7)

This module provides functions to export intermediate HMM calculation results for troubleshooting and parameter tuning.

Output files are numbered by phase:

1. 01_emission_probabilities.geojson — Emission probabilities: links from each GNSS position to its candidate netelements with distance / heading probabilities.
2. 02_transition_probabilities.geojson — Transition probabilities between every feasible (non-zero) candidate pair across consecutive GNSS steps.
3. 03_viterbi_trace.geojson — Viterbi decoding trace: the netelement selected at each observation step.
4. 04_candidate_netelements.geojson — All candidate netelements with aggregate emission probabilities and Viterbi membership flag.
5. 05_path_sanity_decisions.geojson — Post-Viterbi navigability sanity check decisions for each consecutive segment pair.
6. 06_filling_gaps.geojson — Gap-fill decisions: bridge netelements inserted between disconnected consecutive segments after sanity validation.
7. 07_selected_path.geojson — Only the netelements that form the final validated path (including bridge segments).

Functions

export_all_debug_info

Export all HMM debug information to numbered GeoJSON files (T158)

export_gap_fills

Export gap-fill records to a GeoJSON file (phase 6).

export_hmm_candidate_netelements

Export Phase 4 – All candidate netelements with aggregate probabilities as GeoJSON

export_hmm_emission_probabilities

Export Phase 1 – HMM emission probabilities as GeoJSON

export_hmm_selected_path

Export Phase 5 – Selected Viterbi path netelements as GeoJSON

export_hmm_transition_probabilities

Export Phase 2 – HMM transition probabilities as GeoJSON

export_hmm_viterbi_trace

Export Phase 3 – Viterbi decoding trace as GeoJSON

export_path_sanity_decisions

Export Phase 5 — Post-Viterbi path sanity decisions as GeoJSON