Added first map: World 2km

README.md

@@ -6,3 +6,21 @@ This repository contains land databases for my Minetest mod [Geo Mapgen](https:/
 - Create a blank Minetest world and enable `geo_mapgen` mod. Don't start the game.
 - Copy your desired data file from this repository to your Minetest world folder, and rename it `heightmap.dat`.
 - Start the game and enjoy!
+
+## The maps!
+For now, there is only one map, but the goal is to group as many ones as possible.
+
+### World 2km
+Using [NOAA Global DEM](https://ngdc.noaa.gov/mgg/topo/globe.html) for elevation and [MODIS-based Global Land Cover](https://landcover.usgs.gov/global_climatology.php) for biomes.
+- Projection: Mercator
+- Coverage: Worldwide (85°N to 85°S)
+- Size: 20037x20037
+- Elevation data source: [NOAA Global DEM](https://ngdc.noaa.gov/mgg/topo/globe.html)
+- Land cover data source: [MODIS-based Global Land Cover](https://landcover.usgs.gov/global_climatology.php)
+- Horizontal resolution:
+  - 1 node = 2000m at equator
+  - 1 node = 1414m at 45°N/S
+  - 1 node = 1000m at 60°N/S
+- Vertical resolution: 1 node = 200m
+- File size: 24.8 MB
+![France](https://user-images.githubusercontent.com/6905002/36617435-b68915ac-18e7-11e8-9436-95cb67dd2ac4.png)