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Properties of tiled web maps that require convention or standards include the size of tiles, the numbering of zoom levels, the projection to use, the way individual tiles are numbered or otherwise identified, and the method for requesting them. Most tiled web maps follow certain Google Maps conventions: Tiles are 256x256 pixels
Original file (SVG file, nominally 256 × 256 pixels, file size: 49 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Original file (2,732 × 2,884 pixels, file size: 2.57 MB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
This work contains information from OpenStreetMap, which is made available under the Open Database License (ODbL). The ODbL does not require any particular license for maps produced from ODbL data. Prior to 1 August 2020, map tiles produced by the OpenStreetMap Foundation were licensed under the CC-BY-SA-2.0 license .
Original file (SVG file, nominally 899 × 1,196 pixels, file size: 17.41 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The OpenStreetMap data primitives are stored and processed in different formats. OpenStreetMap server uses PostgreSQL database, with one table for each data primitive, with individual objects stored as rows. [22] [23] The data structure is defined as part of the OSM API. The current version of the API, v0.6, was released in 2009.
The increased resolution over D1 comes as a result of a longer horizontal scan. The difference is that whilst D1 has a 4:3 aspect ratio 960H has a 16:9 widescreen aspect ratio. The extra pixels are used to form the increased area to the sides of the D1 image. The pixel density of 960H is identical to standard D1 resolution so it does not give ...
Sets the text size for the label, in points. default = 12 New for 2024, label-size can have additions to place a background fill and/or an outline around a label. text-size=12,background will use the standard background map-color as a solid fill under the area of the text - handy if the label is being confused by other map details.