Dynamic scheduling and rendering method of voluminous web-end television-network resource GIS data
A technology of data dynamics and power grid, applied in the field of electric power geographic information system, can solve problems such as affecting business functions, loss of object integrity, etc., to achieve the effect of good user experience
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[0049] Specific rules can be formulated based on the above principles according to actual application requirements. The following table is a specific example of display rules:
[0050]
[0051]
[0052] 2. Line data compression
[0053] Lines include overhead lines and cables. In the application of power GIS, the line is the key information displayed on the large-scale map. Due to the huge amount of line data, in the present invention, the Douglas-Pocke algorithm is used to perform hierarchical compression on it in advance, that is, different degrees of node thinning are performed on lines in different scale ranges. The following table is a specific example of a hierarchical compression rule:
[0054]
[0055] 3. Data dynamic scheduling
[0056] The implementation process of data scheduling is as follows: figure 2 Shown:
[0057] (3-1) The client creates a request cache and a data cache container, and the container adopts an R tree structure;
[0058] (3-2) Th...
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