Tile map with time dimension and service method thereof

Abstract

The invention discloses a tile map with a time dimension and a service method thereof. The tile map is a temporal tile map which is obtained by expanding the tile map on the basis of a tile pyramid, wherein the expansion method includes the step of expanding a tile of the tile pyramid into a group of tile group consisting of a plurality of temporal information tiles, wherein the tile group is temporal tiles. According to the method, through expansion of the tile pyramid structure and combination of data characteristics, the tile pyramid and the time dimension are combined to construct a temporal tile pyramid structure, a standard service interface is extended, parameters such as starting time, end time and matching type are added to match the tile data in one period of time or the tile data closest to a time point (the end time), or precisely match a tile data function of the time point, different temporal tile data are accessed in a single tile map service, thus the temporal information can be directly expressed and the resource is saved.

Description

technical field [0001] The invention relates to the technical field of map services, in particular to a tile map with a time dimension and a service method thereof. Background technique [0002] The tile map pyramid model is a multi-resolution hierarchical model, refer to figure 1 , from the bottom to the top of the tile pyramid, the resolution gets lower and lower, but the geographic range represented remains the same. Now more and more map services use tile technology. For example, the Tiantu map service released in my country now uses map tile technology. In fact, the map tile after slicing is a raster image and does not have positioning information. However, after the slice uses the relevant slicing algorithm, the specific positioning position can be calculated. For example, use the WGS84 geodetic coordinate system as the spatial reference to slice the map, and use a certain slicing algorithm, such as dividing the map tiles with the latitude and longitude steps in equa...

AI Technical Summary

Problems solved by technology

[0003] A single tile map service such as WMS, WMS-C, WMTS, TMS, KML or XYZ and other standard tile services has no time dimension and cannot directly express temporal information; tile maps can only express temporal information through multiple Service, each service expresses a time information to express temporal information, which causes a waste of resources

Images