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What do you need to know about MBTiles tileset?
All text in text columns of tables in an mbtiles tileset MUST be encoded as UTF-8. The database MUST contain a table or view named metadata. This table or view MUST yield exactly two columns of type text, named name and value.
What should the metadata table contain in MBTiles?
The metadata table is used as a key/value store for settings. It MUST contain these two rows: name (string): The human-readable name of the tileset. format (string): The file format of the tile data: pbf, jpg, png, webp, or an IETF media type for other formats.
What do you need to know about the MBTiles spec?
The tile_data column MUST contain the raw binary image or vector tile data for the associated tile as a blob. See the UTFGrid specification for implementation details of grids and interaction metadata itself: the MBTiles specification is only concerned with storage. The database MAY have tables named grids and grid_data.
What is the magic number for MBTiles in SQLite?
Tilesets SHALL be valid SQLite databases of version 3.0.0 or higher. Only core SQLite features are permitted; tilesets SHALL NOT require extensions. MBTiles databases MAY use the officially assigned magic number to be easily identified as MBTiles. Note: the schemas outlined are meant to be followed as interfaces.
How to find the coordinates of a tile in Bing Maps?
Each tile is given XY coordinates ranging from (0, 0) in the upper left to (2 level –1, 2 level –1) in the lower right. For example, at level 3 the tile coordinates range from (0, 0) to (7, 7) as follows: Given a pair of pixel XY coordinates, you can easily determine the tile XY coordinates of the tile containing that pixel:
What is the specification for MBTiles in SQLite?
MBTiles is a specification for storing arbitrary tiled map data in SQLite databases for immediate usage and for efficient transfer. MBTiles files, known as tilesets, must implement the specification below to ensure compatibility with devices.
How big are the tiles on Google Maps?
All tiles have the same size, usually 256×256 pixels. Only the relevant tiles loaded and displayed for the area of interest / viewport. MapTiler makes it easy to create and self-host maps for your websites and products. If you are a newbie you couldn’t care about complicated cartography things, MapTiler solves it for you.