GIS Data Downloader Pro

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WHAT YOU CAN DOWNLOAD

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▸ Digital Elevation Models (DEM)

Real-world heightmap data from 7 providers at resolutions from 1 m to

90 m. Output as GeoTIFF, ArcASCII or RAW — ready to drop into

GIS Terrain Loader Pro or any heightmap pipeline.

▸ Satellite & Map Imagery (Raster)

Tiled imagery from 5 providers. Download at any zoom level ,

in any grid size, as JPG, PNG or GeoTIFF. Includes MapInfo .tab

georeferencing files and optional mipmap generation.

▸ Vector / OSM Features

Roads, buildings, water bodies, vegetation and fully custom OSM tag

filters — downloaded as standard .osm files, one file per feature

type, ready for GIS Terrain Loader Pro or any OSM parser.

Exported data format

• DEM : GeoTiff, ESRI ArcGrid ASCII and Unity Raw Files;
• Raster : GeoTiff, Png, Jpg;
• Vector : OSM data, Mapbox Pbf

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SUPPORTED PROVIDERS

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DEM (Elevation)

• SRTM 90 m        — free, global (±60° lat)

• SRTM 30 m        — NASA EarthData account, global (±60° lat)

• Mapbox Terrain   — API key, global

• Bing Maps        — API key, global

• OpenTopography   — API key, 5 sub-providers (NASADEM, SRTM GL1/GL3,

USGS 30 m / 10 m)

• Copernicus 30 m  — OAuth client ID + secret, global

• USGS 1 m         — free, USA only

Raster (Imagery)

• ArcGIS           — free, no key required

• Mapbox           — API key

• Google Maps      — API key

• Bing Maps        — API key

• Copernicus       — OAuth (satellite, vegetation highlight, NDVI)

Vector

• OpenStreetMap    — free, no key required

• Mapbox Vector    — API key, zoom 10–16

*** FEATURES ***

✔ Editor Window  — dedicated downloader window with area bounds,

Map Helper browser integration, zone save/load and one-click download.

✔ Runtime API  — full MonoBehaviour singleton with coroutine-based

pipeline, static events (OnDownloadStarted / OnDownloadComplete /

OnDownloadCancelled / OnDataDownloading) and live progress floats.

Configure and start any download entirely from code at runtime.

✔ Custom Inspector  — the runtime component exposes the same complete

tab-based Inspector as the Editor window, with no extra setup needed.

✔ CRS & Coordinate Reprojection  — input and output coordinate systems

configurable per download. Supports WGS84, Web Mercator (EPSG:3857),

UTM (auto-detect or manual zone), NAD83 and ETRS89. Embed CRS

metadata in GeoTIFF output files.

✔All downloaded data are automatically Geo-referenced, which guaranty a flexibility while importing them into any GIS software

✔ Multi-Tile Downloads (DEM + Raster)  — split any bounding box into a custom grid

(e.g. 4×4, 8×8) for higher resolution coverage of large areas.

✔ Custom OSM Filters  — define your own OSM tag queries using

ScriptableObject dictionaries and download any feature type (hospitals,

industrial zones, parks, etc.) alongside built-in categories.

✔ Map Helper  — visual coordinate selection in the browser. Click a

bounding box on an interactive map and paste the coordinates directly

into the downloader.

✔ Smart Resume  — skip already-downloaded tiles with the "Overwrite

Existing" toggle. Interrupted downloads continue from where they left off.

✔ Area Preview  — download a single low-resolution overview image of

the full zone before committing to a full tile download.

✔ Zone Analysis  — automatic tile count and zoom level recommendations

based on the selected area size.

✔ Large Geotiff  — Create Extra-Larg Images up to 16k.

✔ Save/Load Area bounds — Save and load Area bounds to/from a file.

✔ Add-on for GIS Terrain Loader Pro — the tool is fully compatible with GIS Terrain

Loader Pro and can be used to generate real-world terrains, apply georeferenced textures and place OSM vector features automatically in Play mode or edit mode

*** SUPPORT ***

• Full source code included ;
• Editor Tool: no scene setup required;
• Runtime: one MonoBehaviour component, coroutine-based,no dependencies;
• Output compatible with GIS Terrain Loader Pro
• Demo scene included;
• Easy to use with video & documentation;
• Tested on Unity 2021,2022,2023, Unity 6.x;
• Works with Built-in, URP and HDRP render pipelines
• Active support through emails and Discord.
• The package contains the complete source code without dependencies.