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nx_crater_quality.nx

buildroot/runtime/nx_crater_quality.nx

10121 B263 linesdepth 3pulls 3 transitivereach 0 importersview sourcekind tool

docs dependencies structs consts functions

about

nx_crater_quality.nx -- per-kind grader for nx_crater_field output. Reads a crater array (4 i64 per crater: cx, cy, r, depth) and grades on 5 axes: 0. POWER_LAW_FIT: Neukum 1983 N(>D) ~ D^-2. We check that the count above the median radius is roughly 25% of the total (consistent with -2 exponent). 1. SPATIAL_UNIFORMITY: nearest-neighbour distance distribution suggests Poisson (vs. clustered). Sample N pairs. 2. SIZE_RANGE: max_r / min_r should be >= 4 (real cratering covers multiple decades of size). 3. DEPTH_RATIO: mean(depth/r) should match Pike 1977 value 0.20 (fresh) or be lower (eroded); tolerance band. 4. NON_OVERLAP: fraction of craters whose centres are NOT inside another crater (catches generators that emit duplicates). EMITS LAYER_VERDICT (kind = NX_LAYER_KIND_CRATER).

dependencies 3 imports · 0 importers

imports: nx_syscalls.nxnx_tier.nxnx_layer_verdict.nx

imported by: nobody (leaf or entry point)

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

structs

none

consts

30	const NX_CR_Q: nx_int = 16384
32	const NX_CR_AXIS_POWER_LAW: nx_int = 0
33	const NX_CR_AXIS_SPATIAL_UNIF: nx_int = 1
34	const NX_CR_AXIS_SIZE_RANGE: nx_int = 2
35	const NX_CR_AXIS_DEPTH_RATIO: nx_int = 3
36	const NX_CR_AXIS_NON_OVERLAP: nx_int = 4
37	const NX_CR_AXIS_COUNT: nx_int = 5
39	const NX_CR_CRATER_STRIDE: nx_int = 4
40	const NX_CR_OFF_X: nx_int = 0
41	const NX_CR_OFF_Y: nx_int = 1
42	const NX_CR_OFF_R: nx_int = 2
43	const NX_CR_OFF_DEPTH: nx_int = 3

functions

45	func _cr_band_score(val: nx_int, lo_q: nx_int, hi_q: nx_int) -> nx_int called by 2: _cr_power_law_q14 _cr_depth_ratio_q14
64	func _cr_power_law_q14(craters: *i64, n: nx_int) -> nx_int called by 1: nx_crater_quality_grade calls 1: _cr_band_score
93	func _cr_spatial_unif_q14(craters: *i64, n: nx_int) -> nx_int called by 1: nx_crater_quality_grade
126	func _cr_size_range_q14(craters: *i64, n: nx_int) -> nx_int called by 1: nx_crater_quality_grade
149	func _cr_depth_ratio_q14(craters: *i64, n: nx_int) -> nx_int called by 1: nx_crater_quality_grade calls 1: _cr_band_score
167	func _cr_non_overlap_q14(craters: *i64, n: nx_int) -> nx_int called by 1: nx_crater_quality_grade
195	func nx_crater_quality_grade( called by 1: main calls 7: _cr_power_law_q14 _cr_spatial_unif_q14 _cr_size_range_q14 _cr_depth_ratio_q14 _cr_non_overlap_q14 nx_layer_verdict_init+1
214	func main() -> i64 calls 2: sys_mmap nx_crater_quality_grade