Intelligent map data system modeling method and application thereof in electric power auditing operation
A map data and system modeling technology, applied in data processing applications, database management systems, special data processing applications, etc., can solve problems such as poor fluency, unreasonable data structure, and operation blockage, and achieve data processing and efficiency-enhancing effects
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Embodiment 1
[0041] Embodiment 1. Curvature zeroing correction of satellite map data.
[0042] In order to minimize the complexity of the three-dimensional data structure, it degenerates into two-dimensional data during the projective modeling period. First, set the coordinates of the center of the spherical surface to (0,0,0), and set the radius to unit 1. The curved surface space is converted into a plane space, the projection plane is tangent to the spherical surface, and then a straight line passing through the tangent point is set to irradiate the projection plane, so as to realize the one-to-one correspondence projection transformation of the curved and straight surface coordinates, and realize the correction of the curvature to zero; the algorithm process is: first set Locate the tangent point of the landmark sphere, and then set the three-dimensional space Cartesian coordinate system as follows: the z-axis is determined by the tangent point and the center of the sphere; the y-axis i...
Embodiment 2
[0043] Embodiment 2, optimization of data space structure
[0044] First, according to the natural characteristics of map information, it is defined as a ternary multi-valued function, so that it has complete vector characteristics. The vector data is first divided according to the time dimension label to form a time series data layer, and then each time series data layer is divided according to the spatial region. Each airspace data unit obtained has the independence between units and the orthogonality and linear combination characteristics of the timing level, so that the data transmission and processing rate can be doubled;
Embodiment 3
[0045] Embodiment 3, data arrangement
[0046] Sorting the data before rendering can effectively reduce the amount of rendering calculations. The data organization methods include: C-1. First, establish a pyramid structure tile index for the map data. The index data is constructed into local multi-scale spatial data according to the data source, and further Carry out range topological intersection calculations between map vector data and map two-dimensional space, and store the calculation results separately according to geometric features, attribute features, and audit parameter features; C-2. In the interaction link of basic data: if multiple sets of data have dependencies , then set n sets of data as parametric equations with the same intermediate parameter to form an n+1-dimensional data relationship; or equivalently, use any data to express variables for the rest of the data to form an n-dimensional data relationship ; Choose one of the two, which has an equivalence relat...
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