Method for embedding railway line positions on GIS maps
A GIS map and railway technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem that the information unique to the railway line cannot be displayed well, the map API is not compatible, and the railway line plane map representation method supports Incomplete and other issues, to achieve the effect of reducing repetitive workload, improving flexibility, and enriching interactive effects
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[0055] Below, the present invention is described in detail with reference to accompanying drawing and embodiment:
[0056] Such as Figure 1~5 As shown, a method for embedding railway lines on a GIS map includes the following steps:
[0057] (i) Start.
[0058] (ii) Create map layers and create drawing layers.
[0059] Create a map layer and a drawing layer respectively, and apply for resources to the system to create a drawing container.
[0060] (iii) Request map data
[0061] Asynchronously send a data request to the map provider server according to the currently displayed center point coordinates and display scale.
[0062] (ⅳ) Mapping
[0063] When the server of the map service provider returns the map data, draw the map in the drawing container created in step (ii), and wait for the execution of step (ⅹ).
[0064] (v) Request for plotting data
[0065] Query its own database system for all drawing element information within the display range.
[0066] (ⅵ) Draw ke...
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