Method for simplifying numerical map settlement place polygon by utilizing parametric design model
A technology of applying parameters and designing models, which is applied in the field of map drawing and geographic information engineering, can solve problems such as inapplicability, difficulty in realization, and reduction of data accuracy, and achieve the effect of improving production efficiency
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[0174] Embodiment 1: Taking the planar residential area data in the 1:250,000 map data as an example to synthesize the 1:500,000 data, the attached Figure 8 (a) is a planar residential area with a scale of 1:250,000.
[0175] Implementation process:
[0176] (1) According to the digital map production specification, the values or value ranges of the following parameters are given:
[0177] a.I i The value range of is shown in Table 1:
[0178] Table 1I i range of values
[0179]
[0180] b. Threshold value set D=(d 1 , d 2 ,...,d 9 ) T Partition of solution space and initial threshold According to the digital map production specification and experience, the decompression space is compressed as shown in Table 2:
[0181] The division of the solution space of Table 2-1D
[0182]
[0183] The division of the solution space of Table 2-2D
[0184]
[0185] initial threshold The value of is shown in Table 3:
[0186] Table 3 Threshold value of
[0187]...
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