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Method and device for drawing geologic symbols

A technology of symbols and geology, which is applied in the fields of graphics and computers, can solve the problems of large storage space, low efficiency of drawing geological symbols, unclear geological symbols, etc., and achieve the effects of ensuring quality, improving display clarity, and saving storage space

Inactive Publication Date: 2014-07-23
CHINA UNIV OF GEOSCIENCES (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems existing in related technologies, the present invention provides a method and device for drawing geological symbols, which are used to overcome the problems of unclear geological symbols when zooming, low efficiency of drawing geological symbols and large storage space

Method used

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  • Method and device for drawing geologic symbols
  • Method and device for drawing geologic symbols

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Embodiment 1

[0146] Such as Figure 7 As shown, taking the drawing of geological symbols of local anomalies caused by volcanic rocks according to the coordinate positions of vector elements included in the rendering cycle as an example, the method for drawing geological symbols in the embodiment of the present invention will be described in detail, and the method includes:

[0147] Step S701: Receive an instruction to draw a geological symbol of a local anomaly caused by volcanic rock, and the national standard code of the geological symbol included in the instruction is 3211010221.

[0148] Step S702: According to the national standard code 3211010221 of the geological symbol, obtain from the symbol classification information table that the symbol type corresponding to the national standard code 3211010221 is a dot symbol and the symbol code is 00210021, wherein the first four digits of the symbol code 0021 represent the geological symbol Vector element code, the last four digits of the s...

Embodiment 2

[0155] Such as Figure 9 As shown, taking the drawing of the geological symbols of hornporphyry according to the spacing and displacement of the vector elements included in the rendering cycle as an example, the method for drawing geological symbols in the embodiment of the present invention will be described in detail, and the method includes:

[0156] Step S901: Receive an instruction to draw the hornporphyry geological symbol, the instruction includes the national standard code 3203020221 of the hornporphyry geological symbol.

[0157] Step S902: According to the national standard code 3203020221 of the geological symbol, obtain from the symbol classification information table that the symbol type corresponding to the national standard code 3203020221 is a plane symbol and the symbol code is 00590082, wherein the first four digits of the symbol code 0059 represent the geological symbol The code of the vector graphics element, the last four digits of the symbol code 0082 are...

Embodiment 3

[0168] In the embodiment of the present invention, when the scale of the map changes, the symbol of the same geological body will change accordingly. Taking the example of redrawing railway symbols when the scale is changed, the method for drawing symbols in the embodiment of the present invention will be described in detail below, as follows: Figure 12 As shown, the method includes:

[0169] Step S1201: Receive an instruction to draw a railway symbol with a scale of 1:250,000, and the instruction includes the first national standard code of the railway symbol at a scale of 1:250,000.

[0170] Step S1202: According to the first national standard code of the railway symbol with a scale of 1:250,000, obtain the vector graphics element and attribute information of the symbol from the pre-built geological symbol library; the attribute information includes at least the rendering cycle of the geological symbol.

[0171] Step S1203: draw the railway symbol with a scale of 1:250,000...

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Abstract

The invention relates to a method and device for drawing geologic symbols. The method includes the steps that an instruction for drawing the geologic symbols is received, and the instruction contains national standard codes of the geologic symbols; according to the national standard codes of the geologic symbols, vector graphic elements and attribute information of the geologic symbols are acquired from a pre-constructed geologic symbol base; the attribute information at least comprises the rendering period of the geologic symbols; according to the vector graphic elements and the attribute information of the geologic symbols, the geologic symbols are drawn. Through the method and device for drawing the geologic symbols, complex geologic symbols can be structuralized, and thus the geologic symbols can be drawn through the basic vector graphic elements and the rendering period. The display definition of the geologic symbols is improved through the vector graphic elements, when the geologic symbols are zoomed, the vector graphic elements will not deform or distort, and thus the quality of the geologic symbols is guaranteed. Meanwhile, the geologic symbols can change as the measuring scale changes, and thus the geologic body expressed by the geologic symbols is more accurate.

Description

technical field [0001] The invention relates to the field of drawing and computer technology, in particular to a method and device for drawing geological symbols. Background technique [0002] In today's "big data era", how to express spatial data efficiently, conveniently, and standardized has become the focus of industry research related to geographical distribution. With the continuous advancement of the "National One Map Project" in the field of land and resources, it is necessary to solve the problem of rapid mapping based on the database. That is, the semantic information description of standardized geological objects and the semantic change of geological objects under the condition of variable scale. Although the relevant geological mapping software platform symbol system can initially meet the mapping needs of the geological industry, there are many deficiencies in symbol standardization, refinement, network application, and cross-platform sharing. [0003] Compare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00
Inventor 付宗堂方坤闫红雨马建芳薛典军
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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