Sketch Map is a clever interactive map which uses D3.js too Walkway.js to sketch a route map i lilliputian flake at a time. Zoom inwards too out on the map or pan around too you lot tin notice how the roads too transit lines are sketched out inwards real-time.
When I get-go saw the map inwards activeness my initial thoughts were '... this is rattling clever. Not rattling useful ... exactly rattling clever'. However, thinking near this a lilliputian more, I tin come across some possible uses for this. You could maybe usage the animated drawing run to animate the drawing of a route on pinnacle of a map.
You could likewise usage this technique to add together dissimilar layers to a map. For example, you lot could plow over users the pick to add together edifice footprints to a basic route map. When this pick is selected you lot could too hence sketch the footprints onto the map using the sketchcart technique.
If you lot desire to accept a play around amongst this yourself the code for Sketchcart is available nether an MIT license on Github.
