bbox dict | width int64 7.68k 12.3k | height int64 3.84k 6.14k | elev_min int64 -9,094 0 | elev_max int64 4.49k 21.2k | dtype stringclasses 1
value | byte_order stringclasses 1
value | row_order stringclasses 1
value | col_order stringclasses 1
value | reference_radius_m int64 1.74M 6.05M ⌀ | source stringclasses 5
values |
|---|---|---|---|---|---|---|---|---|---|---|
{
"lat_min": -90,
"lat_max": 90,
"lon_min": -180,
"lon_max": 180
} | 11,520 | 5,760 | -8,206 | 21,181 | int16 | little | north_to_south | west_to_east | 3,389,500 | NASA MGS MOLA MEGDR 16 ppd megt (PDS Geosciences Node) |
{
"lat_min": -90,
"lat_max": 90,
"lon_min": -180,
"lon_max": 180
} | 11,520 | 5,760 | -5,380 | 4,490 | int16 | little | north_to_south | west_to_east | 2,439,400 | USGS Astrogeology Science Center / NASA MESSENGER, Mercury MESSENGER USGS DEM Global 665m v2, public domain |
{
"lat_min": -90,
"lat_max": 90,
"lon_min": -180,
"lon_max": 180
} | 12,288 | 6,144 | 0 | 7,918 | int16 | little | north_to_south | west_to_east | null | ETOPO 2022 v1 60s ice-surface (NOAA NCEI) |
{
"lat_min": -90,
"lat_max": 90,
"lon_min": -180,
"lon_max": 180
} | 7,680 | 3,840 | -9,094 | 10,738 | int16 | little | north_to_south | west_to_east | 1,737,400 | NASA LRO LOLA LDEM 64 ppd (PDS Geosciences Node) |
{
"lat_min": -90,
"lat_max": 90,
"lon_min": -180,
"lon_max": 180
} | 8,192 | 4,096 | -2,951 | 11,687 | int16 | little | north_to_south | west_to_east | 6,051,000 | USGS Astrogeology Science Center / NASA Magellan, Venus Magellan Topography Global 4641m v02, public domain |
ridgeline terrain
Baked global elevation heightfields for ridgeline, a browser 3D globe flight/explore demo (Rust→WASM + WebGPU). Derived from public-domain government datasets (U.S. Government works — no copyright); this repo redistributes resampled, reformatted versions.
Files
| File | Body | Grid | Source |
|---|---|---|---|
heightfield.bin |
Earth | 8192×4096 | NOAA ETOPO 2022 (60 arc-sec, ice surface) |
water_mask.bin |
Earth | 8192×4096 | derived from ETOPO (uint8, 1 = water) |
moon_heightfield.bin |
Moon | 7680×3840 | NASA LRO LOLA LDEM |
mars_heightfield.bin |
Mars | 11520×5760 | NASA MGS MOLA MEGDR (32 ppd) |
venus_heightfield.bin |
Venus | 8192×4096 | NASA Magellan topography (USGS v02) |
mercury_heightfield.bin |
Mercury | 11520×5760 | NASA MESSENGER USGS DEM v2 (÷2) |
*_heightfield_d4.bin / _d16.bin |
all | ÷4 / ÷16 | area-mean resolution tiers for progressive loading |
*_meta.json |
— | — | grid dims, bbox, elevation range per body (tier dims = full ÷ f) |
Format
Raw little-endian int16 meters (no header), row-major row*width + col;
row 0 = north (+90°), col 0 = west (−180°). Earth is relative to sea level with ocean
clamped to 0; Moon relative to the 1737.4 km sphere; Mars relative to the areoid
(no clamp — Hellas −8.2 km to Olympus Mons +21.2 km); Venus relative to the 6051 km
sphere (polar radar gaps mean-filled); Mercury relative to the 2439.4 km sphere.
Read dims from the matching *_meta.json, never hardcode.
Bake pipelines (download + resample + verify) live in the ridgeline repo under
data/bake/.
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