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Automatic generation method of statistical map legend based on element combination

A technology of automatic generation and elements, which is applied in calculation, instrumentation, electrical digital data processing, etc., can solve the problems of substandard expression of statistical map legends, inability to quickly and automatically generate, and difficult explicit expression of statistical data concept layers, etc., to improve Degree of automation, effect of reducing legend generation steps

Inactive Publication Date: 2018-07-27
THE PLA INFORMATION ENG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for automatically generating statistical map legends, which can effectively solve the problems that the current statistical map legends are not standardized, and the concept layer of statistical data is difficult to express explicitly and cannot be quickly and automatically generated.

Method used

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  • Automatic generation method of statistical map legend based on element combination
  • Automatic generation method of statistical map legend based on element combination
  • Automatic generation method of statistical map legend based on element combination

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Embodiment Construction

[0048] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0049] figure 1 The process flow of the method for automatically generating a statistical map legend based on element combination is shown, including the following steps:

[0050]The first step, selection of thematic representation method

[0051] 1.1. Classification of Statistical Map Representation Methods

[0052] For statistically Figure 1 Generally, the feature of large and medium scale thematic maps is that the surface area is used as the statistical unit. The statistical map representation method is divided into point symbol representation method and surface symbol representation method; the point symbol representation method is divided into pie symbol representation method, grid notation method, columnar notation method, rose notation method, graded notation method, continuous ratio notation method, and the planar notation method is divided into quality b...

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Abstract

The invention discloses a method for automatically generating a statistical map legend based on element combination. The specific steps include: the first step, selecting a special topic representation method; the second step, building a statistical map symbol prototype; the third step, building a statistical field legend element; The fourth step is to construct the legend element of the mathematical model; the fifth step is to construct the legend element of the statistical symbol; the sixth step is to generate the legend of the statistical map. The invention standardizes the legend expression of the statistical map, reduces the generation steps of the legend, and improves the automatic degree of legend generation.

Description

technical field [0001] The invention belongs to the field of automatic production of thematic maps, and relates to a method for flexibly and quickly combining legend elements to automatically generate statistical map legends. Background technique [0002] The word "legend" comes from the Latin legend, which means "something used to teach". Legend serves as a bridge of communication between cartographers and map users, transforming people's thinking concepts into map language descriptions, and at the same time transforming map language into people's logical language expressions. The general map legend is a systematic symbol induction and necessary text description for all geographical elements on the map. It is an important part of the map information transmission process and a necessary prerequisite for the design of the map symbol system. [0003] Statistical maps are based on statistical data, a statistical graphic that expresses the quality or quantity characteristics of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 江南张亚军华一新张晓楠张政
Owner THE PLA INFORMATION ENG UNIV
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