Geological symbol automatic generating and drawing method

Abstract

The invention provides a geological symbol automatic generating and drawing method comprising the steps that 1: multiple attribute items are extracted, and each attribute item is represented by an attribute symbol so as to construct a geological symbol model; 2: multiple attribute items possessed by each geological body and the spatial relationship between multiple attribute items are defined, theattribute symbols of the geological symbol model are extracted, the geological body is represented by using the corresponding attribute symbols, and the attribute symbols are enabled to be constrained by the spatial relationship between the attribute items so as to form the geological body combined codes of each geological body; 3: the attribute symbols of the geological body combined codes are enabled to be corresponding to and correlated with the correspond characters in the regional geological legend so as to form integrated representation symbols; and 4: computer processing is performed on the integrated representation symbols according to the coding principle and the coding method of the regional geological legend so that the integrated representation symbols of the geological body are enabled to be converted into the geological symbols to be displayed on the geological map. The beneficial effects are that the complexity and the error ratio of generating and drawing of the geological symbols can be reduced.

Description

technical field [0001] The invention relates to the technical field of computer graphics, in particular to a method for automatically generating and 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, to standardize the semantic information description of geological objects and the semantic change of geological objects under the condition of variable scale. [0003] At present, all geological map databases basically rely on manual operations for retrieval, editing, decoration, and mapping when providing users with the required maps. These manual operations are very complicated and require a lot of time and ma...

AI Technical Summary

Problems solved by technology

[0007] (2) Although a lot of work has been done, the problem of drawing geological symbols cannot be fundamentally solved

[0008] (3) In addition, there is another common big problem, that is, the geological symbols are manually edited. Due to various reasons (wrong filling of submap codes, wrong checking of attribute values, misoperation, etc.), there may be inconsistencies between geological symbols and geological body attributes The problem, although the proportion is not large (about 1% on average), but the problem is fatal

[0009] (4) The complex structure of geological symbols, especially the existence of time-diagnostic strata, makes it difficult to establish a complete submap database of geological symbols, and new geological symbols need to be supplemented at any time, making it difficult to establish submaps and expand submaps , not for ordinary people

Images