| --- |
| license: cc0-1.0 |
| pretty_name: MGRS PMTiles |
| language: |
| - en |
| tags: |
| - geospatial |
| - maps |
| - pmtiles |
| - vector-tiles |
| - mgrs |
| - hokkaido |
| task_categories: |
| - other |
| viewer: false |
| size_categories: |
| - 1M<n<10M |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: mgrs-hokkaido.pmtiles |
| dataset_info: |
| features: [] |
| splits: |
| - name: train |
| num_bytes: 5710000000 |
| num_examples: 1 |
| --- |
| |
| # MGRS PMTiles |
|
|
| PMTiles distribution of an MGRS-based tasking grid. |
|
|
| This dataset repository currently publishes the following artifact: |
|
|
| - `mgrs-hokkaido.pmtiles` |
|
|
| ## Summary |
|
|
| This Hugging Face dataset repository is used as a **distribution endpoint** for PMTiles artifacts. |
|
|
| The source code, generation workflow, implementation details, and technical background are maintained in the upstream GitHub repository: |
|
|
| - **Source repository:** https://github.com/hfu/mgrs-pmtiles |
|
|
| If you want to understand how this PMTiles file was generated, please refer to the GitHub repository. |
|
|
| ## Data included |
|
|
| ### Files |
|
|
| - `mgrs-hokkaido.pmtiles` |
|
|
| ### Coverage |
|
|
| Current published coverage: |
|
|
| - **Hokkaido, Japan** |
|
|
| ## Description |
|
|
| This artifact contains an **MGRS-based tasking grid** packaged as a PMTiles archive for distribution and downstream geospatial use. |
|
|
| The upstream project defines multiple grid resolutions with zoom-dependent layer allocation. |
|
|
| ### Zoom levels |
|
|
| - `mgrs_100km`: minzoom 3 / maxzoom 7 |
| - `mgrs_10km`: minzoom 8 / maxzoom 10 |
| - `mgrs_1km`: minzoom 11 / maxzoom 12 |
| - `mgrs_100m`: minzoom 13 / maxzoom 16 |
|
|
| ## Source and generation |
|
|
| Source code and generation pipeline: |
|
|
| - https://github.com/hfu/mgrs-pmtiles |
|
|
| According to the upstream repository, the PMTiles artifact is generated through a pipe-based workflow: |
|
|
| - `src/generate-grids.js` emits GeoJSON Text Sequence to stdout |
| - `tippecanoe` consumes the stream directly |
| - temporary GeoJSON Text Sequence files are not used |
| - stdout blocking is enabled to reduce the risk of stream loss during large output generation |
|
|
| For implementation details, development notes, and updates, please refer to the GitHub repository. |
|
|
| ## Intended use |
|
|
| This dataset may be useful for: |
|
|
| - PMTiles-based map distribution |
| - experimentation with MGRS-based tasking grids |
| - downstream geospatial visualization |
| - analysis workflows involving tiled grid datasets |
|
|
| ## Limitations |
|
|
| - This repository is primarily for **artifact distribution** |
| - Build and generation details are maintained in the upstream GitHub repository |
| - The currently published artifact covers **Hokkaido, Japan** |
| - Users should independently validate fitness for operational or production use |
|
|
| ## Important note |
|
|
| The upstream repository includes an important caution that the implementation was developed as a prototype with significant assistance from generative AI and may not have undergone full human review. |
|
|
| Please review the source repository and perform appropriate technical, quality, and legal review before production use. |
|
|
| ## Licensing |
|
|
| This dataset is released under: |
|
|
| - **CC0 1.0** (`cc0-1.0`) |
|
|
| ## Repository links |
|
|
| - **Hugging Face dataset:** https://huggingface.co/datasets/smartmaps/mgrs-pmtiles |
| - **GitHub source repository:** https://github.com/hfu/mgrs-pmtiles |
