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hydrography-tiles

Index IGB hydrography.org 90 m / 20° tiles in the earthsurface graph: draw the tile grid, look up which tile contains a lat/lon (client-side), list GeoTIFF…

Skill by earthcube

IndexedApache-2.0
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/earthcube-hydrography-tiles

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Index IGB hydrography.org 90 m / 20° tiles in the earthsurface graph: draw the tile grid, look up which tile contains a lat/lon (client-side), list GeoTIFF layer stems from contentUrl. Triggers: hydrography90m, h10v04, 20 degree tile, stream accumulation, CTI, /skill:hydrography-tiles. Not for: deepoceans, ecoforecast, GeoSPARQL distance, downloading full tiles.

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found
Runs as
Python package

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/hydrography-tiles

What's inside

Skill name
hydrography-tiles
Description
Index IGB hydrography.org 90 m / 20° tiles in the earthsurface graph: draw the tile grid, look up which tile contains a lat/lon (client-side), list GeoTIFF layer stems from contentUrl. Triggers: hydrography90m, h10v04, 20 degree tile, stream accumulation, CTI, /skill:hydrography-tiles. Not for: deepoceans, ecoforecast, GeoSPARQL distance, downloading full tiles.
License
Apache-2.0
Compatibility
python3, uv, matplotlib (decoder-pi pyproject.toml)
Metadata
project: decoder-pi · version: 1.0
Instructions
34 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Files (6)

  • SKILL.md
  • tile_datasets.json · fixtures/
  • tile_downloads.json · fixtures/
  • tile_datasets.rq · queries/
  • tile_downloads.rq · queries/
  • tiles.py · scripts/

SKILL.md (first lines)

# Hydrography tiles

Earthsurface-only. Dataset names look like:

```text
hydrography.org dataset for bounding box (40 -80 20 -60) {tile h10v04}
```

Lookup is a rectangle test on that bbox, not `geof:distance`.

## CLI

```bash
ES=https://qlever.geocodes-aws.earthcube.org/graphspace/earthsurface

uv run python skills/hydrography-tiles/scripts/tiles.py grid --endpoint $ES \
  -o runs/hydro-grid.png

uv run python skills/hydrography-tiles/scripts/tiles.py lookup \
  --endpoint $ES --lat 40 --lon -105

uv run python skills/hydrography-tiles/scripts/tiles.py layers \
  --endpoint $ES --tile h10v04 --limit 400
```

| Mode | Output |
|---|---|
| `grid` | map of 20° footprints + `hXXvYY` labels, coastlines on |
| `lookup` | which tile contains `--lat --lon`, highlight on map |
| `layers` | table of GeoTIFF stems (`accumulation`, `cti`, `channel_elv_…`) |

Do not download the `.tif` files here (`geotiff-list` prints URLs only).

From earthcube/decoder-pi, Apache-2.0.

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5
Last commit (this folder)
Sep 21, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

Version
1.0
License
Apache-2.0
Repository
github.com/earthcube/decoder-pi
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

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Cite this page

hydrography-tiles skill. Agent Mart. https://agentmart.dev/skills/earthcube-hydrography-tiles (last updated 2026-10-24)