Conversion method of TrueType symbol and spotted map symbol based on path

Abstract

The invention discloses a conversion method of a TrueType symbol and a spotted map symbol based on a path, which comprises the steps of converting the TrueType symbol into the spotted map symbol based on the path and converting the spotted map symbol based on the map into the TrueType symbol. The conversion of the TrueType symbol into the spotted map symbol based on the path is achieved by judging the TrueType symbol, the TrueType symbol data are classified according to the geometry, and the TrueType data are mapped into the spotted map symbol based on the path. The conversion of the spotted map symbol based on the path into the TrueType symbol is achieved by judging the spotted map symbol based on the path, the spotted map symbol based on the path is classified according to the geometry,and the spotted map symbol based on the path is mapped into the TrueType symbol.

Description

technical field [0001] The invention relates to the field of geographic information sharing, in particular to a method for exchanging TrueType symbols 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, because each geographic information system (GIS) software platform has its own closed symbol de...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the existing defects in the sharing of map symbols, solve the heterogeneous problem of point symbols in maps, and propose TrueType symbols and path-based point map symbols on the basis of path-based point map symbol data models. The exchange method provides a two-way mapping between TrueType symbols and path-based point map symbols (referred to as VGE point symbols), and realizes the assimilation and sharing of point map symbols

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