32 results about "Tile Map Service" patented technology

The invention provides a mass small tile file storage management method based on hadoop. According to the method, sequencing is carried out through a Hibert curve, and then, grid tile data is subjected to serialization compression storage by a Sequence File technology of the hadoop pre se; when tile compression blocks are generated, the multithreading parallel compression of a plurality of servers is realized, tile index information is generated, and the mass file library entering storage speed is accelerated; the regular naming of block file names is managed, and efficient storage, fast reading and high-performance grid data service can be provided for mass multi-source and multi-version grid small tiles; and ITMS (Improved Tile Map Service) is designed, and the problem of delay and bandwidth occupation caused by original data transmission and real-time data processing request responding, so that the project data retrieval and transmission requirements are met.

The invention discloses a tile loading method for 2.5-dimensional map service. The method comprises a map service application display device, a 2.5-dimensional map service application module and a map service module. The 2.5-dimensional map service application module calls the map service module, needed map tiles are retuned, and the map tiles are loaded and displayed on the display device. The map service module calculates requested minimum tile set through the tile scanning algorithm on the basis of map view window pitching and rotary changes, and sends tile loading service requests to a server side, and the server returns a tile service response. The tile scanning algorithm can rapidly scan and calculate the number and the range of the minimum tiles which need to be loaded during 2.5-dimensional map service, and therefore the purposes of fast loading and map browsing are obtained.

The invention discloses a thematic map building method. The thematic map building method includes: judging the type of a map service according to a map data source selected by a user; adopting a corresponding algorithm to operate a map location, requested by the user, relatively according to the type of the map service so as to obtain corresponding tile coordinates; generating a URL (uniform resource locator) address of a special map service by utilizing the tile coordinates, and requesting to a map server successively to obtain corresponding map tiles; performing map layer overlapping on the obtained map tiles, displaying the map tiles successively at the same position on a screen, and thereby obtaining a required thematic map. The thematic map building method is applied to mobile platforms like smartphones, so that users can access to different tile map services conveniently while checking maps, can operate the multiple map layers of the map in operation, like switching and overlaying, and can operate the map, like translating and zooming.

The invention discloses a marine environmental prediction product parallel processing method applied to tiled map services. The method comprises the following steps that (1) the longitude and latitude of metadata of a marine environmental prediction product are read, a WGS84 coordinate is converted into a WebMercator projection coordinate; (2) a data depth layer is cut into n parts according to the kernel number of a parallel machine, an MATLAB parallel strategy is designed; (3) a map grading number is set; (4) according to the current map level interpolation, an MATLAB drawing instruction is used for generating graded section files; (5) drawing of all parameters of the current map grade is completed; (6) an LOD mode is used for organizing the section files, and drawing of all parameters of all grades is completed; (7) after all parallel computers complete processing, metadata are generated. The marine environmental prediction product parallel processing method applied to tiled map services has a good application prospect in the informatization research field of marine environmental sciences. According to the method, a parallel computing technology is used for guaranteeing quick processing of marine environmental prediction data, and the release cycle of the tiled map services is shortened.

The system according to the present invention includes a server including a map data storage device, which stores digital map data, a plurality of tile map data generated from the digital map data, and solid-compressed map data compressed by solid compression from the plurality of tile map data, a solid-compressed map data generation device, which generates the plurality of tile map data from the digital map data stored in the map data storage device, generates the solid-compressed map data by compressing the plurality of tile map data by solid compression, and stores the generated solid-compressed map data in the map data storage device, and a solid-compressed map data providing device, which transmits the solid-compressed map data to a client through a network in response to a request from the client. Therefore, it is possible to reduce the frequency of network access and the amount of data transmitted.

The invention relates to a PDF tile map and a manufacturing method. The PDF tile map stores map expressed graph information and interactive geographic information by adoption of a tile pyramid model in a PDF format, and has all the features of PDF maps. The manufacturing method mainly comprises the following steps of: firstly establishing a PDF tile map pyramid model; converting other projected PDF maps into Web Mercator projected PDF maps via projection; and finally clipping the Web Mercator projected PDF maps on the basis of the PDF tile map pyramid model, and splicing the PDF tile maps withsame tile coordinates to finally obtain a PDF tile map. The PDF tile map is not only capable of providing multi-stage grid tile map services, but also has a geographic element interaction ability, and is capable of seamlessly and organizationally managing PDF maps and providing multiple map visualization services to ensure that the using of the PDF maps is not limited by mapsheet any longer.

The invention provides a mobile equipment indoor positioning method. By using the advantages of safety, high speed, great band width and low energy consumption of an NFC (near field communication) technology, position fingerprint data is stored into an NFC label; the mobile equipment reads the position fingerprint data in the label through a self-carried NFC chip; the position information of the current point of the user is obtained; the current position of the user is initialized; the advancing direction and the speed of the user are obtained in real time through a magnetic field sensor and an acceleration sensor of mobile equipment; obtaining the real-time position of the user according to the user initial position and the sensor data; the indoor positioning in the moving state is realized; tile map service issued by GeoServer is used for displaying the real-time position of the user in the tile map. The method has the advantages that the indoor positioning based on the mobile equipment sensor is realized; the advantages of high positioning precision, high real-time performance, convenient and fast operation and the like can be realized.

A tile map service (TMS) device and method are provided. The TMS device includes a storage configured to store map layers that have different map types, map data of an image tile form having a level of detail (LOD) structure of each of the map layers, and a tile map in which image tile maps of a plurality of map layers are merged; a communicator configured to receive map request information including two or more map types, an LOD level, and arbitrary map coordinates from a client; and a provider configured to provide a tile map corresponding to the map request information to the client.

The invention discloses a tile map service method. The method comprises the following steps: S1, capturing a user request by using a gateway interceptor, and matching the user request belonging to a tile map service request according to a map gateway rule; S2, analyzing the user request belonging to the tile map service request, extracting a spatial range and user information of a tile map, and completing tile map service according to the spatial range and user information of the tile map. According to a tile map service gateway method based on regional application and user authorization, authorized access of the tile map service is achieved on the premise that the existing tile map service is not changed, and therefore, the tile map service gateway method is flexible in process and good in compatibility and portability; in combination with a gateway technology, information of a rear-end map server is shielded, so that data security is improved, and potential safety hazards such as unauthorized application and data leakage of tile map services are solved.

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.

The invention discloses a power grid slice updating method and a terminal. The method comprises the following steps: obtaining a change record of power grid equipment, combining slice geographic blocks of the change record through employing a pyramid slicing algorithm, and obtaining index change data of the slice geographic blocks; determining a display layer according to the slice geographic block, and calculating associated slice data before and after the power grid equipment data is changed in real time according to the index change data and the display layer, so as to obtain incremental slice data; and according to a file storage model of a pyramid algorithm, generating an incremental slice file from incremental slice data, and updating power grid slices based on the incremental slice file, and dynamically completing generation and pushing of a vector slice file online, so as to realize online updating of slice map service. The problem that off-line map cutting and publishing need to be carried out regularly according to the newest full-amount power grid data in the traditional slice map service is solved, and real-time updating of the power grid slice file is realized.