Mass vector data access and rendering method, electronic device and storage medium

Abstract

The invention discloses a mass vector data access and rendering method. The method includes a data access method and a data rendering method; the data access method is used for obtaining element data of each element in a current viewport, and the data rendering method is used for drawing and rendering the elements in the current viewport according to the element data corresponding to the elements obtained by means of the data access method; the data access method specifically includes the following steps that the searching range of the current viewport is obtained; according to the searching range, the elements, element packages, and element IDs which are in line with the condition are searched in an index file; the condition refers that the element packages are intersected with the searching range or the element packages are included in the searching range; the element packages refer to rectangular regions formed by the maximum coordinates and the minimum coordinates of the elements respectively; according to the element ID corresponding to each element, corresponding element data is searched in a data file. The invention further provides an electronic device and a computer readable storage medium. The method has the following advantages that the data access speed is high, rendering is conducted quickly and the safety is good.

Description

technical field [0001] The invention relates to a geographic information system, in particular to a method for accessing massive data in the geographic information system, electronic equipment and a storage medium. Background technique [0002] GIS is a specific and very important spatial information system. It is a technical system that collects, stores, manages, calculates, analyzes, displays and describes the relevant geographical distribution data in the space of the entire or part of the earth's surface (including the atmosphere) with the support of computer hardware and software systems. However, feature-based digitized vector maps have completely gone mainstream. With the development of industry technology, we have higher and higher requirements on the data volume and access efficiency of vector data. For example, ESRI successively launched the Shape data format, PDB data format and FGDB data format to continuously improve the data access capability. Insufficient. ...

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a method for accessing and rendering massive vector data, which can solve the problem of slow processing of massive data in the prior art when reading and rendering data. The problem

[0011] The second object of the present invention is to provide an electronic device that can solve the problem of slow processing of massive data in the prior art when reading and rendering data

[0012] The third object of the present invention is to provide a computer-readable storage medium, which can solve the problem of slow processing of massive data in the prior art when reading and rendering data

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