73 results about "Spacial Analysis" patented technology

A National Online Parcel-Level Map Data Portal (NPDP) is provided that optimizes online delivery of parcel-level maps and linked attribute data. To do this, the NPDP manages a database of assembled and current vector based parcel data in a spatial format (GIS) that enables geocoded parcel boundaries to be linked to property tax records. A user enters a street address into an appropriate screen window to call up and view road right-of-ways, all parcel boundaries and the "exact" address location as a highlighted parcel area. In addition, a list of property record attributes such as owner, use code, assessed value and year constructed can be displayed. Other on screen parcels can likewise be selected if one wishes to view their linked attributes. Subscribers may customize the NPDP to perform a variety of spatial analysis/reporting functions. Under public/private alliances, agreements are negotiated with individual property assessor's offices whereby they receive a portion of NPDP service provider revenue in return for parcel map database updates. Such on-going commerce between data sponsors and the NPDP service provider is utilized to assure a sustained and expanding flow of increasingly competent content.

The invention belongs to the field of virtual geographical environment research of a geographic information system, particularly relates to an outburst flood routing simulation and analysis technique, and relates to a cellular automata based rapid outburst flood routing simulation and analysis method. By the method, the problem that an error between a final numerical analysis result and actual water regimen is large due to randomness of cellular scale partitioning at present can be solved; meanwhile, accurate and rapid comprehensive simulation and analysis can be performed on dam-break flood routing and influences by means of reasonable setting of a cellular neighborhood range and combination of spatial analysis capacity of a GIS (geographic information system) and spatial-temporal modeling capacity of cellular automata simulation. The method includes construction of a two-dimensional cellular automata simulation model, optimization of a cellular spatial data structure and virtual geographical environment based visual simulation and analysis.

The invention discloses a two-dimensional and three-dimensional integrated GIS (Geographic Information System) based on live-action three-dimensional. The system comprises a data layer, a service layer and an application layer, the data layer comprises a data acquisition module, a data processing module and a data storage module; the data acquisition module comprises an unmanned aerial vehicle inclined image, a digital line map, a three-dimensional model, topographic data, high-resolution data, attribute data and business data; the service layer comprises a map rendering module and a map service publishing module; and the application layer comprises a two-dimensional and three-dimensional space measurement module, a two-dimensional and three-dimensional integrated display module, a POI search module, an intervisibility analysis module, a dynamic visual range analysis module, a two-dimensional and three-dimensional map plotting module, a two-dimensional and three-dimensional path planning module, a two-dimensional and three-dimensional trajectory data analysis module and a two-dimensional and three-dimensional model real-time monitoring module. According to the invention, the spatial analysis capability of the two-dimensional geographic information system and the display capability of the three-dimensional geographic information system are fused together, and the two-dimensionaland three-dimensional integrated linkage of the map data of the GIS framework is realized.

The invention provides dynamic graphical method and device of a geographic information application and analysis model. The method comprises the following steps of: extracting space geographic information analysis model key words from the structural object information of the application and analysis model; establishing a space analysis model according to a word analysis result of the obtained space geographic information analysis model key words; and dynamically displaying a space geographic information analysis result generated by the space analysis model in the graphic form on a map. The analysis result of a geographic information space model of an application and analysis scheme can be dynamically displayed on an electronic map in a visual graphic form through establishing an incidence relation between the structural object information of the application and analysis model and the space analysis model, which solves the problem of low degree of automation of the traditional application and analysis model in a graphical process and realizes the purposes of simple input, intelligent analysis and automatic display.

The invention relates to a municipal road land acquisition house statistical method which comprises the following steps: S1, selecting and determining a land acquisition demolition area according to an actually measured topographic map provided by a survey bureau; S2, cleaning the topographic map, removing unassociated layers, and reserving house layers and annotations thereof; S3, performing format conversion on the cleaned topographic map, and importing the topographic map into GIS software; s4, in GIS software, detecting the house contour line, removing isolated line segments, and then performing topology analysis to form a zone file; according to the previously imported house annotation, performing attribute assignment on the area file, and establishing an attribute structure for judging whether the house is expropriated or not in the area file; and S5, importing the land expropriation and demolition area and the area file into a spatial analysis module together, performing intersection analysis to form an intersection file, and superposing the original house area file according to the attributes of the intersection file to obtain a result drawing of the house in the land expropriation and demolition area. And land acquisition and house demolition statistics becomes faster.

The invention discloses an ArcGIS-based geomorphic type division method, which is used for dividing geomorphic types by establishing a model and a division system in ArcGIS, and comprises the following steps of: data preprocessing: generating a basic map layer on the basis of a digital elevation model; terrain factor extraction: extracting an optimal terrain factor by using ArcGIS; geomorphic typedivision: using ArcGIS to establish a model and a division system to divide geomorphic types. According to the invention, a digital elevation model (DEM) is used in ArcGIS and a spatial analysis processing function is applied to carry out automatic discrimination and division of landform types; according to the method, topographic factors (elevation, gradient, topographic relief, earth surface cutting depth and the like) are extracted mainly based on a specification statistical unit, then multiple topographic factors are comprehensively analyzed, time and labor are saved, and standard consistency, system unification and quantification accuracy can be achieved.

The invention relates to a rapid implementation method for space superposition analysis, and relates to the technical field of space superposition optimization. The invention discloses a parallel space superposition analysis method. An improved surface element structure PLA is utilized; high-precision parallel space filtering based on a parallel grid index technology is realized at an equipment end, and a candidate set is mapped to a GPU thread array in a fine-grained manner to realize parallel element refining processing, so that the many-core advantages of the GPU are fully exerted, and theanalysis efficiency of space superposition is improved; according to the space superposition analysis-oriented rapid implementation method provided by the invention, the performance of the algorithm can be improved by one order of magnitude compared with the implementation of a CPU (Central Processing Unit) on the aspect of surface-to-surface superposition analysis for processing dense data, and the method can be effectively applied to a scene with a higher real-time requirement; due to the advantages of the quick implementation method for spatial superposition analysis in spatial superposition analysis efficiency, a good exploration direction is provided for improving the performance of spatial analysis in a network map service mode.

The invention discloses a spatial relationship knowledge graph data model representation method and system. The method comprises the following steps: constructing administrative division entity objects and grid space entity objects in a domain knowledge graph database; establishing subordinate and intersected relationships between entities of a grid space and an administrative division space basedon a spatial relationship analysis algorithm; carrying out geographic spatial relationship clustering analysis and spatial correlation search operation according to subordination relationships and adjacent relationships of grid space entities in a domain knowledge graph when the spatial relationship clustering analysis of massive spatio-temporal event data is carried out in order to greatly improve he real-time performance of spatial analysis operation in the field of public security business.