Method for exchanging AutoCAD (computer-aided design) graphic block with point map symbol based on path

Abstract

The invention discloses a method for exchanging an AutoCAD (computer-aided design) graphic block with a point map symbol based on a path, which comprises two parts of conversion from the AtuoCAD graphic block to the point map symbol based on the path and conversion from the point map symbol based on the path to the AtuoCAD graphic block. In the conversion from the AtuoCAD graphic block to the point map symbol based on the path, the AtuoCAD graphic block is interpreted, then AtuoCAD graphic block data are classified according to geometrical shapes, and finally an AtuoCAD graphic block entity object is mapped into the point map symbol based on the path. In the conversion from the point map symbol based on the path to the AtuoCAD graphic block, the point map symbol based on the path is interpreted, then the point map symbol based on the path is classified according to the geometrical shapes, and finally the point map symbol based on the path is mapped into the AutoCAD graphic block.

Description

technical field [0001] The invention relates to the field of geographic information sharing, in particular to a method for exchanging AutoCAD block and path-based point map symbols. Background technique [0002] Geographic information sharing refers to the common use of geographic information based on hardware technologies such as computers and spatial data infrastructure, and supported by soft environments such as standards, policies, and laws. Map symbols are the main tool for spatial data visualization. It stimulates the left brain of people through pictographic and comprehensible graphics to generate mental images to convey information such as the characteristics and distribution rules of geographical entities. [0003] The existing geographic information sharing technology rarely considers the sharing of map symbol information, and even if it does, the effect is not ideal, especially how to share symbols between CAD and GIS has always been a difficult problem for everyo...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects existing in the sharing of existing map symbols, solve the heterogeneous problem of point symbols in maps, and propose AutoCAD block and point map based on paths on the basis of path-based point map symbol data models. Symbol (referred to as VGE point map symbol) exchange method, providing bidirectional mapping between AutoCAD blocks and path-based point map symbols, realizing the assimilation and sharing of point map symbols

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