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Method for forming symbol with point, side and line integration

A technology of symbols and features, which is applied in the field of point, line and area integrated feature symbols formation, can solve the problem of limiting the richness of symbol expression and the user's ability to customize symbols, and achieve the effect of improving expression ability

Inactive Publication Date: 2007-11-21
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current relatively independent symbol design formation method limits the richness of symbol expression and the ability to customize symbols for users

Method used

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  • Method for forming symbol with point, side and line integration
  • Method for forming symbol with point, side and line integration
  • Method for forming symbol with point, side and line integration

Examples

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0019] EXAMPLE An example of the method of the present invention was implemented on a computer. As shown in Figure 1, it includes the following steps:

[0020] (1) Define a collection of symbolic pixels, specifically including point, line and area pixel sets, and the set of point pixels is expressed as PT={pt 1 ,pt 2 ,pt 3 ,pt 4 ,pt 5 ,pt 6 ,pt 7 ,pt 8 ,pt 9 ,pt 10 ,pt 11}, where pt i The effective pixels for point symbols are line pixels, triangle pixels, filled triangles, ellipses, filled ellipses, arcs, text, rectangles, filled rectangles, circles, and filled circles; the set of line pixels is expressed as LT={ lt 1 , lt 2 , lt 3 , lt 4 ,∑PT i}, including four basic graphics elements (solid line SolidLine, tangent line HashLine, broken line DashLine dot line DotLine) and a special pixel --- point symbol (∑PT i ); surface pi...

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Abstract

A method for forming cultural symbol with point and line as well as surface includes defining symbol pixel set, using multiple point pixel to from point symbol, forming line symbol as per traditional means or forming line symbol with selected point symbol, forming surface symbol by multiple surface pixel and enabling to fill line symbol and point symbol in formed surface symbol if it is necessary.

Description

technical field [0001] The invention relates to a method for forming feature symbols in maps and geographical information, in particular to a method for forming feature symbols integrating points, lines and planes. Background technique [0002] A map symbol is an abstraction of geographic space and is a graphic used to modify objects on a map. According to the visual variables and arrangement order of map symbols to distinguish the types, attributes and distribution rules of ground objects, it is also the main form of Geographic Information System (GIS) to express geographic information and spatial concepts. [0003] At present, the formation methods of general feature symbols are roughly similar, and they are all independent design and formation methods for points, lines, and planes. The design and formation of point, line and area symbols are independent. For example, in the ArcGIS symbol design system, the design of point symbols uses the existing arrow symbols, font sym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 焦东来朱虹张书亮
Owner NANJING NORMAL UNIVERSITY