Rapid map making system based on GIS (Geographic Information System) data

Abstract

The invention discloses a rapid map making system based on GIS (Geographic Information System) data. The rapid map making system based on the GIS data is used for converting the GIS data into map making data in a high-precision map data format for map making publication, and completing intelligent pre-processing of the map making data in the data conversion process by fully utilizing rich semantic information in the GIS data and map making rules predefined in the map making system. The rapid map making system based on the GIS data comprises an original GIS data reading module, a symbol library establishing module, a graphical design repository module, an element conflict process repository module, a map making rule providing module, a map data generating module and a map file input and output module. According to the invention, the GIS data is converted into the map making data, therefore, the pre-processing operation of a large amount of the map making data can be completed before the map is edited, the map making period of a digital map is shortened, and the map making efficiency and quality based on GIS data are improved.

Description

technical field [0001] The invention relates to the field of digital drawing, in particular to a fast map drawing system based on GIS data. Background technique [0002] Traditional map drawing is drawn directly on paper materials by hand. This drawing method is not only extremely inefficient, but also difficult to modify, and map updates are more time-consuming and laborious. With the development of computer technology. Computer graphics have gradually replaced manual graphics, and a large number of map design and graphics software have emerged, such as CorelDraw, Illustrator, Supermap, etc. Computer-aided cartography is based on the basic line drawing data of surveying and mapping data (measurement data or GIS data), which saves a lot of data collection work, not only improves data production efficiency, but also speeds up data update speed, which is different from traditional Compared with the drawing mode, the digital map production cycle is greatly shortened. GIS da...

AI Technical Summary

Problems solved by technology

[0007] To solve the above problems, there are currently several commonly used methods, but these methods have their own advantages and disadvantages: (1) establish a GIS map expression model; (2) through Vector graphic formats AutoCAD DXF, Windows EMF, Adobe Illustrator AI, etc. are used as intermediate formats for indirect conversion; (3) Using the clipboard, through the interoperability between ArcGIS software and CorelDraw software, the GIS data is directly converted into CorelDraw through selective paste format data, etc.

The map expression model based on GIS organically integrates geographic data and map expression information, facilitates object-level modification and preservation of map objects, reduces data redundancy, facilitates incremental update and multiple expressions of maps, and is also convenient for traditional GIS Expand map expression capabilities, but this model is still at the stage of formal description, and no related system has been developed yet; the technical route of using GIS data to map in CorelDraw environment, its main steps are: data screening and analysis → data projection Transformation→data layering→data editing→symbolization→scale determination→data format conversion (map output), although this method solves the problem of format conversion from GIS data to CorelDraw data, the conversion process from GIS data to map data cannot Therefore, the rules for converting GIS data into map data cannot be customized, and the output map data still has problems such as imprinting, overprinting, and trapping. The main feature of this method is to symbolize, render, and standardize in CorelDraw , data editing and a lot of manual editing work; adopt the "copy + paste" method to realize the conversion of ArcGIS data to CorelDraw data, this method not only needs to perform multiple "copy + paste" or convert EMF (Windows Enhanced type metafile) operation, and information such as annotations, symbols, and colors are seriously lost after conversion

[0008]These solutions have basically solved the conversion of line drawing data from GIS software to mapping software, but there are still problems with low precision of line drawing and a large loss of semantic information of the data ( Such as feature classification, attributes, relationships, symbolic representations, etc.) and other issues

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