Drawing method of multi-display-level map

A display-level, multi-display technology, applied in maps/plans/charts, special data processing applications, instruments, etc., can solve the problem of not having a thinning algorithm, not considering data attributes, types and importance, and unable to reflect the cartographer's concern Map real needs and other issues, to achieve the effect of reducing time complexity and space complexity

Active Publication Date: 2018-09-21
成都瀚涛天图科技有限公司
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AI Technical Summary

Problems solved by technology

In essence, it does not consider the attributes, types, and importance of the data, and cannot give priority to key data, and cannot reflect the real needs of cartographers for map display content.
[0005] The traditional map thinning method is based on the spat

Method used

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Embodiment Construction

[0041] The present invention will be further described below:

[0042] A drawing method of a multi-display level map according to the present invention, comprising

[0043] S1, weight table processing

[0044] s11. Integrate the classification codes of each point of interest and formulate a standard classification code table for points of interest. At the same time, the classification codes of points of interest are planned according to three levels: large, medium and small, which is convenient for setting weight values. The classification weight within a large level The value is set large, and the classification weight value in the small level is set small;

[0045] s12. Set the weight value for each specific category in the POI classification code table according to the classification level of the POI. The range of the weight value is between 10-90. In principle, set the weight of ten digits, and set the single digit for each special category value, and finally form a weig...

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Abstract

The invention discloses a drawing method of a multi-display level map. The method includes the steps of weight table processing, wherein by making an interest point criteria classification code tableand setting weight values for classification categories, a weight table is formed; data weight conversion, wherein a classification code conversion comparison table is made, and existing geographic information data is converted and then assigned with values according to the weight table; data thinning, wherein the final weight values of to-be-thinned geographic information data within the thinningradius of each display level are calculated, and the data with the maximum weight value is the thinning result under the display level; illustration drawing, wherein the thinned geographic information data is imported into map engineering for drawing. In the method, the geographic information data is classified according to interest points, the weight values are calculated, and then data thinningis completed level by level according to the map display levels, so that the data thinning result with the most reasonable data layout and the most comprehensive data importance expression is obtained.

Description

technical field [0001] The invention relates to the field of map making, in particular to a method for making maps with multiple display levels. Background technique [0002] Geographic information data thinning and map making technology based on multi-dimensional computing is mainly divided into two parts: data thinning and map making. Data thinning exists as a data processing link in map making. Through the data thinning algorithm based on multi-dimensional calculations to process massive map interest point data, the display content of interest points required for each map display level in the map drawing link is generated to achieve On the premise of ensuring the beautiful map drawing, the data of points of interest with higher importance are displayed first, so as to meet the most important drawing effect requirements of the cartographer. [0003] There are two main ways of processing traditional map data thinning, one is to thin out by percentage, and the other is to t...

Claims

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Application Information

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IPC IPC(8): G06F17/30G09B29/00
CPCG09B29/005
Inventor 徐林杨春龚萍
Owner 成都瀚涛天图科技有限公司
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