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DOL formula-based dotted line drawing method

A dot-dash line and formula technology, applied in the field of dot-dash line drawing based on DOL formula, can solve problems such as low work efficiency and difficulty in drawing modification, and achieve the effect of drawing standards

Pending Publication Date: 2021-07-23
CHINA RAILWAY DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires repeated operations between multiple software platforms, which leads to low work efficiency and difficulty in modifying drawings

Method used

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  • DOL formula-based dotted line drawing method
  • DOL formula-based dotted line drawing method
  • DOL formula-based dotted line drawing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Example: The basic workflow is as follows figure 1 As shown, a dot-dash line drawing method based on the DOL formula includes the following steps: S1 determines the width A of the dot-dash line, S2 determines the length of the real part of the dot-dash line B, S3 determines the ratio of the dot-dash line to the dashed line C, and S4 according to the DOL formula Calculate the imaginary part length X, S5 calculate the dot-dash line point spacing ratio Y according to the DOL formula, and S6 draw the dot-dash line according to the parameters in S1-S5.

[0020] S1. Determining the width of the dot-dash line: a thematic mapping project needs to draw a dot-dash line with a line width A of 10 pixels, that is, A=10 in the known DOL formula.

[0021] S2. Determine the length of the real part of the dotted line: according to the drawing requirements of the drawing, determine that the length of the real part is 10 times the line width A, that is, the length of the real part B=10*10...

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Abstract

The invention relates to a DOL formula-based dotted line drawing method, and belongs to the technical field of thematic charting, and the method comprises the following steps: S1, determining the width A of a dotted line, S2, determining the real part length B of the dotted line, S3, determining the dotted line proportion C of the dotted line, S4, calculating the imaginary part length X according to the DOL formula, S5, calculating the dot spacing proportion Y of the dotted line according to the DOL formula, and S6, drawing the dotted line according to the parameters in S1 to S5. The drawing proportion of the dotted line is rapidly and accurately calculated through the DOL formula, the dotted line is drawn, and meanwhile drawing parameters of a special dotted line are given. The dotted line is more standard, efficient and rapid to draw.

Description

technical field [0001] The invention belongs to the technical field of thematic drawing, and in particular relates to a dot-dash line drawing method based on a DOL formula. Background technique [0002] In thematic cartography, it is often necessary to draw a line with one point and one line with multiple points. The common method is to make line types in vector editing software, such as AutoCAD software platform or Illustrator software platform, and then import the data into the drawing platform after data conversion. This method requires repeated operations between multiple software platforms, which leads to low work efficiency and difficulty in modifying drawings. DOL is the abbreviation of dot line (dot-dash line), and the DOL formula is a new formula proposed by the inventor for the first time through the definition and derivation of dot-dash line. The formula can be used to quickly and accurately calculate various parameters for drawing dot-dash lines, thereby effici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/20
CPCG06T11/203G06T11/206
Inventor 杜辉邱慧敏史中心张朋明李婷
Owner CHINA RAILWAY DESIGN GRP CO LTD
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