Using the keyboard, hold down the shift key, then use the up and down arrow keys to adjust tilt, and the right and. The structure of a typical Slippy Map tile request looks like this: url/zoom-level/x-coordinate/y-coordinate. You can adjust tilt and rotation using the mouse and keyboard: Using the mouse, hold down the shift key, then click and drag the mouse up and down to adjust tilt, right and left to adjust heading. Here's an example of a Z15 tile from Open Street Map.Īt any given zoom level, a specific tile can be identified by cartesian coordinates with 0,0 starting in the top left of the map. The highest zoom level depends on the application, at zoom level 15 there are over a billion tiles each with a spatial resolution of 4.77 meters per pixel. At zoom level 0, an entire mercator projection of the earth is contained in one 256px by 256px tile:Īt each further zoom level the number of tiles increases by a factor of four and the spatial resolution (ground meters per pixel) of each tile roughly doubles. Once you understand Slippy Maps you can use Planet's tiling service to embed Planet imagery into your own applications. Slippy Maps define a loose standard for how tiles should be requested based on 2 concepts: Zoom Levels and Tile Coordinates. ![]() Tiles can be loaded on the fly as a user browses around a map to give the impression of a large seemless image. ![]() Tiling images is an efficient way to browse large amounts of raster and vector map data that would be much too large to render as a single map image. Ī core component of Slippy Maps is that the images should be served as tiles on a grid. It was popularized the Open Street Map (OSM). A Slippy Map is an architecture for building mapping applications on the web.
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