lkpyu.blogg.se - Mapproxy tms resolutions zoom levels

Zoom level 1 uses four tiles to render the world: a 2 x 2 squareĮach additional zoom level quad-divides the tiles of the previous one, creating a grid of 2 zoom x 2 zoom. At zoom level 0, the entire world fits on a single tile: Azure Maps provides raster and vector tiles for 23 zoom levels, numbered 0 through 22. The Azure Maps SDK's use tiles that have a size of 512 x 512 pixels for road maps, and smaller 256 x 256 pixels for satellite imagery. To optimize the performance of map retrieval and display, the map is divided into square tiles. North and south are always up and down, and west and east are always left and right. Square buildings should appear square, not rectangular.

For example, we want to avoid distorting the shape of buildings. Preserving the shape of small objects is especially important when showing aerial imagery.

It's a conformal projection, which means that it preserves the shape of relatively small objects.

This projection significantly distorts the scale and area of the map but has two important properties that outweigh this distortion: The Spherical Mercator projection stretches the map at the poles to create a square map. A projection is the mathematical model used to transform the spherical globe into a flat map. Azure Maps use the Spherical Mercator projection coordinate system (EPSG: 3857).