After transformation of the data model and processing of the thematic mapping elements, the paper constructs a mapping system of the seabed sediment thematic.
经过对数据模型的转换以及专题制图要素的处理，建立了海洋底质专题数字图成图系统。
But in the aspects of Thematic mapping automation, mapping system based on GIS still has many limitations, Particularly the Thematic map type and sign automation need manual disposal to be realized.
但在专题图自动化方面，以GIS为基础的制图系统仍有一定的不足，尤其是在专题图式、符号自动化方面仍需要人机交互来完成。
But in the aspects of Thematic mapping automation, mapping system based on GIS still has many limitations, Particularly the Thematic map type and sign automation need manual disposal to be realized.
但在专题图自动化方面，以GIS为基础的制图系统仍有一定的不足，尤其是在专题图式、符号自动化方面仍需要人机交互来完成。
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