为了生成PDF，FOP格式化程序需要知道文档中使用的字体，特别是使用的所有图符的宽度。
To lay out the PDF, the FOP formatter needs to know the details about the fonts to be used in the document, particularly the widths of all the glyphs used.
根据地图符号的设计原则，设计旅游地图符号及可视化功能，旅游符号数据存储和索引方案及网络性能优化方案。
According to the design principle of the map symbol, design the travel map symbol and visual function, the scheme of the symbol data store reference and network performance.
地图是地理信息可视化的载体之一，而地图符号是表达地图内容的主要形式。
The map is a carrier of visualization for geographical information, and map symbol is main expression of map data.
论述了在数字制图环境下地图输出的特点，在分析了地图上点、线、面符号特征和构造原理的基础上，提出了一种用于数字地图符号化输出的地图符号库数据结构。
On the base of analyzing the character and structure of the point, line, area symbols, a data structure of map symbol base which serves the symbolized output in digital mapping is put forward.
结合地图符号的结构特征和SVG的表达方法，提出了基于SVG结构化的地图符号描述模型。
Integrating the character of map symbol and SVG, this paper presents a description model of map symbol based on SVG.
建立了常用零件机构简图符号库，设计了符号库调用与输入的可视化环境。
In this article, we develop a symbols library for common concise machine draft and design a visible environment to transfer and input the symbols.
基于所设计的地图符号库实现了空间数据的可视化。
Realize spatial data visualization based on designed map symbol library.
给出了可视化程序设计语言的基本概念及语法描述，提出了可视化的交互式多媒体演示系统创作工具MPAT中的图符写作语言。
In this paper, the concept and syntax of visual programming language are described, and an icon authoring language of MPAT is introduced.
图形化的用户界面，是以窗口、菜单、按钮、图符等图形化的视觉符号为传达方式，引导用户操作。
Graphical user interface USES Windows, menus, buttons and symbols as transmitting way to guide customer how to do the next step.
地图符号的选择在空间信息可视化中至关重要。
Selection of map symbols is very important in visualization of spatial data.
地图符号的选择在空间信息可视化中至关重要。
Selection of map symbols is very important in visualization of spatial data.
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