Apparatus and method for visualizing GIS line data at browser
A line data and browser technology, applied in the computer field, can solve problems such as the unsmooth visualization effect of GIS line data, and achieve the effect of convenient migration and smooth effect
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no. 1 example
[0031] Figure 1 to Figure 7 is a correlation diagram for describing the first embodiment of the present application, first, figure 1 is a block diagram of a device for visualizing GIS line data at the browser end according to the first embodiment of the present invention, such as figure 1 As shown, the device includes a data storage module 10 , a data layer manager module 30 , an animation manager module 50 and a renderer module 70 .
[0032] Among them, the data storage module 10 is used to store GIS line data to provide basic data for browser display, which is beneficial to the application of the method of this application on different products and platforms. This module has no special restrictions on the storage method of GIS line data. Each GIS line data only needs to include the unique ID number of the real object, the time and geographic coordinates of the recorded data, such as figure 2 As shown, its storage method can be SQL Server, Oracle, Dameng, Jincang and othe...
no. 2 example
[0047] Figure 8 It is a flow chart of the method for visualizing GIS line data on the browser side according to the second embodiment of the present invention, such as Figure 8 As shown, the method includes the following steps S102 to S112.
[0048] Step S102: Obtain the GIS line data set to be displayed.
[0049] When displaying GIS line data on the browser side, first query and retrieve the GIS line data set to be displayed through a specific interface, and then return the data to the browser side in JSON, XML and other formats. Among them, the GIS line data is pre-stored in the background server. There are no special restrictions on the storage method of GIS line data. Each GIS line data only needs to include the unique ID number of the real object, the time and geographical coordinates of the recorded data, and the storage method can be SQL Server, Oracle, Dameng, Jincang, etc. The database also includes GeoPackage, UDB database files, Excel and txt text, etc.
[0050...
no. 3 example
[0059] Figure 9 It is a flow chart of the method for visualizing GIS line data on the browser side according to the third embodiment of the present invention, such as Figure 9 As shown, the method mainly includes the following four steps:
[0060] 1. Line data production;
[0061] 2. Line data encapsulation;
[0062] 3. Start the player;
[0063] 4. Line smooth stretching rendering.
[0064] Among them, in the first step, the GIS line data produced only need to include the unique ID number of the real object, the time of recording the data and the geographical coordinates, without limiting the storage method of the data, which can be as follows: Figure 9 Data stored in the database shown, UDB / GeoPackage data, Excel data, or data in other data formats.
[0065] In the second step, after the GIS line data set to be displayed is obtained, the line data is packaged into a GIS line data object, and the time attribute (that is, the time of recording data) and the physical ID...
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