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s104-water-level

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分支3

更新时间2026年5月17日 21:46

Expert knowledge of IHO S-104 Water Level Information for Surface Navigation Product Specification. Covers HDF5-encoded water-level time-step grids, WaterLevel feature, Group_NNN time-series groups, data coding formats (regular grid, ungeorectified grid, time series at fixed stations, etc.), trend/quality flags, and tide-station metadata. USE FOR: S-104 datasets, water level forecasts/observations, tide grids, S104DatasetReader, S104CoverageSource, S104PortrayalCatalogue, WaterLevelCoverage, WaterLevelValue, time-step iteration, adding S-104 features, S-104 tests. DO NOT USE FOR: S-102 bathymetry (use s102-bathymetry), S-111 currents (use s111-surface-currents), generic HDF5 (use s100-framework).

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philliphoff

philliphoff/EncDotNet.S100

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S-104 Water Level expert

When engaged

Tasks touching src/EncDotNet.S100.Datasets.S104/** or tests/EncDotNet.S100.Datasets.S104.Tests/**
Changes to CoveragePipeline/ICoverageSource affecting S-104
Time-step/time-series semantics for water levels

Spec anchors

Canonical: S-104 Edition 2.0.0 Water Level Information PS
S-100 Part 8: Coverages
S-100 Part 10c: HDF5 encoding
S-104 Annex A: Feature Catalogue
S-104 Annex B: Portrayal Catalogue

Review checklist

HDF5 layout under /WaterLevel/WaterLevel.NN/Group_NNN/values matches spec; root group carries dataCodingFormat, interpolationType, commonPointRule, dimension, methodCurrentsProduct/typeOfWaterLevelData, numberOfTimes, timeRecordInterval, dateTimeOfFirstRecord, dateTimeOfLastRecord.
dataCodingFormat selects the spatial layout — regular grid (2), ungeorectified grid (3), time series at fixed stations (4), stationwise (1), etc. Do not assume regular grid.
Compound dataset values: waterLevelHeight (float32) and waterLevelTrend (uint8 enum: nodata=0, decreasing=1, increasing=2, steady=3). Preserve trend codes.
Times are derived from dateTimeOfFirstRecord + timeRecordInterval * index unless explicit time coordinates are present.
Fill values come from spec/file attributes — do not hard-code NaN.
Public API changes have xunit tests using SkippableFact.

Known pitfalls in this repo

The same coverage container can hold multiple WaterLevel.NN sub-groups (forecast vs. analysis); iterate.
Trend is an enumeration, not a delta — never compute it client-side.
Vertical datum (verticalDatum) varies by producer; surface it through the source rather than assuming MLLW.
Portrayal is synthesised, not spec-driven. S-104 Edition 2.0.0 has no official IHO portrayal catalogue — the spec treats water levels as input to ECDIS depth adjustment rather than a visual layer. S104PortrayalCatalogue ships hand-coded Day / Dusk / Night band tables and per-palette NoDataColor values for viewer parity with S-102 / S-111. The Day palette is preserved byte-for-byte for backward compatibility; Dusk is HLS (saturation × 0.70, lightness × 0.85) of Day; Night is hand-picked ECDIS-style dark navy / olive. Do not invent a synthetic IHO-shaped PC under content/S104/pc/ (kept .gitkeep-only by design).

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chart-cartography

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Cross-cutting cartography and chart-rendering domain expertise for electronic navigational displays — the principles of how marine charts are composed, layered, generalized, coloured, projected, and made performant. Spec- and renderer-agnostic: it explains the *why/what* of good chart rendering and how those principles manifest in this codebase, then defers to the per-spec skills for product semantics and to the renderer READMEs for implementation. USE FOR: layer/draw-order and display-priority decisions; scale-dependent generalization, declutter, SCAMIN/scale-band culling; label/text placement and deconfliction; day/dusk/night palette and contrast design; CRS/projection choices and distortion/antimeridian/pole pitfalls; rendering-performance strategy (geometry simplification, path/snapshot caching, tiling, vertex-bound cost reasoning); reviewing a rendering change for cartographic correctness across products. DO NOT USE FOR: a specific product's encoding/attribute/portrayal rules (use the sXXX skill); Mapsui

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s122-marine-protected-areas

philliphoff/EncDotNet.S100

Expert knowledge of IHO S-122 Marine Protected Areas Product Specification (Edition 2.0.0). Covers GML encoding (S-100 Part 10b) over the S-100 GML base, the S-122 application schema (marine protected areas, restricted areas, regulated areas, and associated text placement), and the XSLT-based portrayal pipeline. USE FOR: S-122 datasets, marine protected areas, restricted/regulated areas, GML parsing for S-122, XSLT portrayal of S-122, vector pipeline changes affecting S-122, S122DatasetReader / S-122 reader/source code, S-122 tests, edits to bundled `content/S122/**` assets. DO NOT USE FOR: S-127 marine resources and services (use s127-marine-services), S-124 nav warnings (use s124-nav-warnings), S-125 AtoN (use s125-aton), S-101 ENC (use s101-enc), generic GML / framework concerns (use s100-framework).

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s102-bathymetry

philliphoff/EncDotNet.S100

Expert knowledge of IHO S-102 Bathymetric Surface Product Specification (HDF5-encoded depth/uncertainty grids). Covers BathymetryCoverage groups, Group_F feature codes, depth/uncertainty dataset shapes, NODATA fill value handling (1,000,000f), tiling, georeferencing attributes, CRS conventions (often UTM), and the depth-shading portrayal palette. USE FOR: S-102 datasets, bathymetric grids, depth surfaces, uncertainty grids, HDF5 bathymetry, BathymetryCoverage, CoverageCell layout, depth shading, S102DatasetReader, S102CoverageSource, S102PortrayalCatalogue, PC-driven Lua portrayal, adding S-102 features, reviewing for S-102 spec compliance, RenderS102 tool changes. DO NOT USE FOR: S-104 water levels (use s104-water-level), S-111 currents (use s111-surface-currents), generic HDF5 access (use s100-framework).

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s201-aton-information

philliphoff/EncDotNet.S100

Expert knowledge of IALA S-201 Aids to Navigation Information Product Specification (Edition 2.0.0, May 2025; aligned with S-100 Ed 5.2.0). Covers GML encoding (S-100 Part 10b) on the S-100 GML 5.0 profile, the S-201 application schema (62 feature types — buoys, beacons, lights, AIS aids, structures, equipment, aggregations), the 4 information types (AtoNFixingMethod, AtonStatusInformation, PositioningInformation, SpatialQuality), xlink-based information bindings, the equipment-on-structure `parent`/`child` xlink relationship, and the XSLT-based portrayal pipeline (`main_PaperChart.xsl`). USE FOR: S-201 datasets, AtoN-authority data exchange, GML parsing for S-201, XSLT portrayal of S-201, vector pipeline changes affecting S-201, S-201 reader/source code, S-201 tests. DO NOT USE FOR: ECDIS-facing AtoN portrayal (use s125-aton — the ECDIS-facing AtoN spec is **S-125, not S-201**), S-101 ENC AtoN feature classes (use s101-enc), S-124 navigational warnings (use s124-nav-warnings), generic GML (use s100-framework

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s131-marine-harbour

philliphoff/EncDotNet.S100

Expert knowledge of IHO S-131 Marine Harbour Infrastructure Product Specification (FC Edition 1.0.0, PC Edition 2.0.0). Covers GML encoding (S-100 Part 10b) in the application namespace `http://www.iho.int/S131/1.0` over the S-100 GML 5.0 base, the S-131 feature catalogue (berths, bollards, mooring buoys, dolphins, locks, dry docks, terminals, anchorage areas, harbour basins, authorities, etc.), and **Lua-based portrayal** (S-100 Part 9A) — making S-131 the first GML+Lua hybrid in this codebase. USE FOR: S-131 datasets, marine harbour infrastructure features, berths, bollards, mooring buoys, GML parsing for S-131, Lua portrayal of S-131, GML-to-Lua data provider bridge, vector pipeline changes affecting S-131, S-131 reader/source code, S-131 tests, edits to bundled `content/S131/**` assets. DO NOT USE FOR: S-101 ENC ISO 8211 features (use s101-enc), S-127 marine services (use s127-marine-services), S-124 nav warnings (use s124-nav-warnings), generic GML / framework concerns (use s100-framework).

2026-05-135

name

s104-water-level

description

S-104 Water Level expert

When engaged

Tasks touching src/EncDotNet.S100.Datasets.S104/** or tests/EncDotNet.S100.Datasets.S104.Tests/**
Changes to CoveragePipeline/ICoverageSource affecting S-104
Time-step/time-series semantics for water levels

Spec anchors

Canonical: S-104 Edition 2.0.0 Water Level Information PS
S-100 Part 8: Coverages
S-100 Part 10c: HDF5 encoding
S-104 Annex A: Feature Catalogue
S-104 Annex B: Portrayal Catalogue

Review checklist

HDF5 layout under /WaterLevel/WaterLevel.NN/Group_NNN/values matches spec; root group carries dataCodingFormat, interpolationType, commonPointRule, dimension, methodCurrentsProduct/typeOfWaterLevelData, numberOfTimes, timeRecordInterval, dateTimeOfFirstRecord, dateTimeOfLastRecord.
dataCodingFormat selects the spatial layout — regular grid (2), ungeorectified grid (3), time series at fixed stations (4), stationwise (1), etc. Do not assume regular grid.
Compound dataset values: waterLevelHeight (float32) and waterLevelTrend (uint8 enum: nodata=0, decreasing=1, increasing=2, steady=3). Preserve trend codes.
Times are derived from dateTimeOfFirstRecord + timeRecordInterval * index unless explicit time coordinates are present.
Fill values come from spec/file attributes — do not hard-code NaN.
Public API changes have xunit tests using SkippableFact.

Known pitfalls in this repo

The same coverage container can hold multiple WaterLevel.NN sub-groups (forecast vs. analysis); iterate.
Trend is an enumeration, not a delta — never compute it client-side.
Vertical datum (verticalDatum) varies by producer; surface it through the source rather than assuming MLLW.
Portrayal is synthesised, not spec-driven. S-104 Edition 2.0.0 has no official IHO portrayal catalogue — the spec treats water levels as input to ECDIS depth adjustment rather than a visual layer. S104PortrayalCatalogue ships hand-coded Day / Dusk / Night band tables and per-palette NoDataColor values for viewer parity with S-102 / S-111. The Day palette is preserved byte-for-byte for backward compatibility; Dusk is HLS (saturation × 0.70, lightness × 0.85) of Day; Night is hand-picked ECDIS-style dark navy / olive. Do not invent a synthetic IHO-shaped PC under content/S104/pc/ (kept .gitkeep-only by design).