http://tangrams.github.io/heightmapper
Heightmapper is an interactive grayscale heightmap browser, which can generate heightmaps for use in 3D applications. By default, it "auto-exposes" the display so that the highest visible elevation in the current view will be white, and the lowest will be black.
Uses Mapzen's global elevation service.
- Uncheck "auto-expose" to set min and max height levels manually.
- Check "show lines" and "show labels" to see more map data.
- Click "export" to open the current view as an image in a new tab - "Save As" to save the image to disk.
- Import the resulting image as a "displacement map" in a 3D application to generate a 3D model of the terrain. (Here's a tutorial for doing this in Blender.)
- The "z:x scale factor" describes how "high" the current view is, on the z-axis, in terms of how wide the current view is on the x-axis. Multiplying this scale factor by the width of a 3D mesh in units x will tell you how high in units z your mesh should be after displacement in order to be true-scale.
- Press the "h" key to toggle UI visibility.
- add a GeoTIFF export option which includes metadata
- Extra Credit: add an 'export at zoom level' slider, to export at a higher resolution by fetching the appropriate tiles and stitching them together, maybe with a max_width (or max_filesize) parameter so you can export an array of Very Large Files
- Super Extra Credit: further export options including lat/lon bounding boxes, country/boundary masking using OSM vector tiles
Start a web server in the repo's directory:
python -m SimpleHTTPServer 8000
If that doesn't work, try:
python -m http.server 8000
Then navigate to: http://localhost:8000