地球信息科学学报 ›› 2016, Vol. 18 ›› Issue (4): 469-476.doi: 10.3724/SP.J.1047.2016.00469

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图数整合的高保真版式网络地图发布原理及方法

李鹤元1(), 李洪省2,**(), 韩嘉福2, 罗斌2   

  1. 1. 信息工程大学地理空间信息学院,郑州,450052
    2. 中国科学院地理科学与资源研究所 资源与环境信息系统国家重点实验室,北京 100101
  • 收稿日期:2015-11-03 修回日期:2016-03-02 出版日期:2016-04-20 发布日期:2016-04-19
  • 通讯作者: 李洪省 E-mail:2625845532@qq.com;lihongsheng@igsnrr.ac.cn
  • 作者简介:

    作者简介:李鹤元(1976-),男,博士生,研究方向为测绘遥感大数据集成和服务关键技术。E-mail: 2625845532@qq.com

  • 基金资助:
    国家自然科学基金青年科学基金项目“基于案例推理的智能化专题地图制图系统研究”(41001314);国家科技基础性工作专项项目“新世纪版《中华人民共和国国家大地图集》编研”(2013FY112800);国家科技支撑计划项目课题“流动人口对区域发展的影响评估及决策支持集成平台示范应用”(2012BAI32B07)

Principle and Methods on Layout Based Web Map Publishing Mode with Integrated Map Data and High Fidelity

LI Heyuan1(), LI Hongsheng2,*(), HAN Jiafu2, LUO Bin2   

  1. 1. Institute of Geospatial Information, Information Engineering University, Zhengzhou 450052, China
    2. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2015-11-03 Revised:2016-03-02 Online:2016-04-20 Published:2016-04-19
  • Contact: LI Hongsheng E-mail:2625845532@qq.com;lihongsheng@igsnrr.ac.cn

摘要:

在分析当前网络地图出版特别是专题地图网络出版现状的基础上,本文提出了版式网络地图的概念、原理及技术方法。版式网络地图克服了当前专题地图出版GIS化和静态图片化的倾向,在为用户提供高保真地图阅读体验的同时,实现了专题数据和专题地图同时发布的模式。该模式的主要技术特点包括:对专题地图图片和专题地图数据进行四叉树分解,将专题地图图片划分为规则格网大小的瓦片金字塔;将专题数据要素分解为可变分辨率的格网集合,以唯一标识记录每个格网及其(需查询的)属性,并采用支持区域、时间、指标、数据四元组的专题数据元进行存储,以便高效地索引专题数据,从而实现专题地图数据的高效查询。同时,本文还介绍了版式网络地图发布模式在地形图出版、原图版式发布、《中华人民共和国人口与环境变迁地图集》电子版网络地图发布系统中的应用案例。最后,对比分析了WebGIS、静态地图图片、PDF/GeoPDF地图、SVG地图以及版式网络地图5种发布模式的优缺点,结果表明版式网络地图是一种有望在专题地图出版领域推广和应用的轻量级地图发布模式。

关键词: 版式网络地图, 四叉树分解, 图数整合, 网络地图发布模式

Abstract:

Based on the analysis of the status quo on web map publishing, particularly the status quo on thematic map publishing, a new concept of layout based web map was proposed. The layout based web map changes the GIS system tendency and static images map tendency of thematic map publishing. It provides the high fidelity map quality, meanwhile realizes the simultaneous publishing of thematic data and thematic map. This paper introduces the design and implementation techniques of the publish system on layout based web map. These techniques decompose the thematic map image and the polygon data into a quad-tree mode. On one hand, it divides the thematic map image into a map tile pyramid with given regular grid size. On the other hand, the thematic data features (mostly are the polygon features) are decomposed into grid dataset with variable resolution. It records every grid attribute based on a unique identification and stores the complex thematic data with information of its region, time, index and value as a data element, which increase the efficiency in thematic data query. In addition, this paper introduces two application scenarios. The first one is a topographic map document published in the EPS format. The second one is a layout based web map publishing system for the “Atlas on Population and Environment, People′s Republic of China”. A comparison of the merits and demerits was made among five web map publishing modes, including WebGIS, static images, PDF/GeoPDF map, SVG map and layout based web map. The layout based web map approach with high fidelity and interactive maps is considered to be promising for the digital thematic map publishing in the web mapping field.

Key words: layout based web map, quad-tree, integration map with data query, web map publish mode