| { |
| "axes": { |
| "core": { |
| "a_imag": "paths", |
| "a_real": "paths", |
| "interaction_count": "paths", |
| "interaction_flags": "paths", |
| "link_path_offsets": "links+1", |
| "link_ue_index": "links", |
| "path_rank": "paths", |
| "phi_r": "paths", |
| "phi_t": "paths", |
| "tau": "paths", |
| "theta_r": "paths", |
| "theta_t": "paths" |
| }, |
| "detail": { |
| "interaction_rank": "interactions", |
| "interaction_type": "interactions", |
| "interaction_vertex": "interactions,3", |
| "path_interaction_offsets": "paths+1" |
| }, |
| "positions": { |
| "bs_positions": "bs,3", |
| "ue_positions": "ues,3" |
| } |
| }, |
| "capabilities": { |
| "retained_empty_links": true |
| }, |
| "fields": { |
| "core": { |
| "a_imag": "<f4", |
| "a_real": "<f4", |
| "interaction_count": "|u1", |
| "interaction_flags": "<u2", |
| "link_path_offsets": "<i8", |
| "link_ue_index": "<i4", |
| "path_rank": "|u1", |
| "phi_r": "<f4", |
| "phi_t": "<f4", |
| "tau": "<f4", |
| "theta_r": "<f4", |
| "theta_t": "<f4" |
| }, |
| "detail": { |
| "interaction_rank": "|u1", |
| "interaction_type": "|i1", |
| "interaction_vertex": "<f4", |
| "path_interaction_offsets": "<i8" |
| }, |
| "positions": { |
| "bs_positions": "<f4", |
| "ue_positions": "<f4" |
| } |
| }, |
| "layout": { |
| "alignment": { |
| "counts": "interaction_count[j] = path_interaction_offsets[j+1] - path_interaction_offsets[j]", |
| "interactions": "interaction_rank, interaction_type, interaction_vertex share interaction index k", |
| "links": "link_ue_index and link_path_offsets[:-1] share link index i", |
| "paths": "core arrays on axis paths share path index j; detail path j is core path j of the record with the same scene_id, frequency_hz and bs_index (equal path_axis_sha256)" |
| }, |
| "index_base": 0, |
| "link_path_offsets": "paths of link i", |
| "offsets": "X_offsets[i]:X_offsets[i+1] (half-open) is the span of element i; X_offsets[0] = 0, X_offsets[-1] = length of the spanned axis, non-decreasing", |
| "path_interaction_offsets": "interactions of path j", |
| "references": { |
| "bs_index": "row of bs_positions in the scene positions record", |
| "interaction_type": "code in schema/interaction-codes.json", |
| "link_ue_index": "row of ue_positions in the scene positions record" |
| }, |
| "vectors": "last axis is (x, y, z) in the scene frame" |
| }, |
| "metadata_key": "__meta__", |
| "metadata_schema": "wireless.npz-meta", |
| "metadata_version": 2, |
| "path_axis_sha256": "path-axis-v1 (wireless_env_data.codecs.path_axis)", |
| "schema": "wireless.arrays", |
| "units": { |
| "a_imag": "1", |
| "a_real": "1", |
| "bs_positions": "m", |
| "interaction_vertex": "m", |
| "phi_r": "rad", |
| "phi_t": "rad", |
| "tau": "s", |
| "theta_r": "rad", |
| "theta_t": "rad", |
| "ue_positions": "m" |
| } |
| } |
|
|
