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Online Survey of Heterogeneous Users and Their Usage of the Interactive Mapping Platform WorldMap 总被引：1，自引：0，他引：1
This article reports on the results of an online survey with 290 heterogeneous users of the interactive mapping platform WorldMap and provides insights into problems faced by such users. Heterogeneous users are users with a variety of GIS skills, educational background, gender, and age categories. We investigate how they interact with online maps and analyse their experience. WorldMap represents as a case study of an online mapping platform which aims to serve researchers and users across disciplines in viewing and creating online interactive maps. We concentrate on operations that are perceived as difficult and very difficult by the majority of users as well as operations that are rarely used. Our aim is to contribute to the discussions on how to improve the design of online GIS-based mapping platforms. We conclude the paper with reflections on the results of our study and ideas for further research. 相似文献
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Mapmaking has become widespread through the Internet, resulting in a wide range of cartographic quality. To achieve better quality, mapmaking needs tools and online services for intuitive and efficient on-demand mapping. A project team at IGN, the French National Mapping Agency, is working on producing a digital cartographic model (DCM) from various existing databases and maps on which such tools and services are based. This DCM ranges from detailed topographic maps to small general road maps. GeoServer Web Map Service capabilities were used extensively to produce quality maps with various legends. Special care was taken to make a default legend suitable for customer data overlays, both on-screen and on paper. Web-based interface prototypes were built to guide users in choosing colors and creating their own original map legends. Users can also rely on a growing catalog of harmonious color palettes and map samples as sources of inspiration. 相似文献
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随着信息需求的增大,传统二维地图的信息深入程度、展现技术已无法满足人们的需要。以三维仿真技术为基础的三维电子地图成为新的热点。本文以"三维仿真楼宇经济系统"为研究对象,详细介绍了在线三维仿真成果在楼宇管理中的应用。三维仿真楼宇经济系统采用在线三维仿真,以楼宇信息数据为基础,以地理信息技术应用为核心,融合数据存储和挖掘、Web动态网页等技术,打造集信息发布、管理、查询、展示、分析等功能于一体的数字化、可视化、网络化的平台。 相似文献
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Transmission and visualization of large geographical maps 总被引：1，自引：0，他引：1
Liqiang Zhang Liang ZhangYingchao Ren Zhifeng Guo 《ISPRS Journal of Photogrammetry and Remote Sensing》2011,66(1):73-80
Transmission and visualization of large geographical maps have become a challenging research issue in GIS applications. This paper presents an efficient and robust way to simplify large geographical maps using frame buffers and Voronoi diagrams. The topological relationships are kept during the simplification by removing the Voronoi diagram’s self-overlapped regions. With the simplified vector maps, we establish different levels of detail (LOD) models of these maps. Then we introduce a client/server architecture which integrates our out-of-core algorithm, progressive transmission and rendering scheme based on computer graphics hardware. The architecture allows the viewers to view different regions interactively at different LODs on the network. Experimental results show that our proposed scheme provides an effective way for powerful transmission and manipulation of large maps. 相似文献
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Wendy R. Eisner Jessica Jelacic Chris J. Cuomo Changjoo Kim Kenneth M. Hinkel Dorin Del Alba 《Transactions in GIS》2012,16(1):17-37
A traditional knowledge “Iñupiaq Web GIS”, based on a five‐year study and containing observations and environmental knowledge of Iñupiat communities indigenous to Arctic Alaska, was incorporated into a Web‐based platform. The website, “Arctic Cultural Cartography,” was created to be an open portal through which the password‐protected “Iñupiaq Web GIS” could be accessed. We discuss the process of developing the web GIS including the incorporation of user‐friendly features such as links to interactive maps, video clips of interviews, discussion boards, and the integration of popular web interfaces such as Facebook. We also discuss short‐ and long‐term goals for the further development of the GIS, its potential as a sustainable, participatory online database for sharing pertinent ecological knowledge, and challenges in achieving optimal community involvement given constraints imposed by remote locations with limited bandwidth. 相似文献
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This article reports on the initial development of a generic framework for integrating Geographic Information Systems (GIS) with Massive Multi‐player Online Gaming (MMOG) technology to support the integrated modeling of human‐environment resource management and decision‐making. We review Web 2.0 concepts, online maps, and games as key technologies to realize a participatory construction of spatial simulation and decision making practices. Through a design‐based research approach we develop a prototype framework, “GeoGame”, that allows users to play board‐game‐style simulations on top of an online map. Through several iterations we demonstrate the implementation of a range of design artifacts including: real‐time, multi‐user editing of online maps, web services, game lobby, user‐modifiable rules and scenarios building, chat, discussion, and market transactions. Based on observational, analytical, experimental and functional evaluations of design artifacts as well as a literature review, we argue that a MMO GeoGame‐framework offers a viable approach to address the complex dynamics of human‐environmental systems that require a simultaneous reconciliation of both top‐down and bottom‐up decision making where stakeholders are an integral part of a modeling environment. Further research will offer additional insight into the development of social‐environmental models using stakeholder input and the use of such models to explore properties of complex dynamic systems. 相似文献
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基于Voronoi图的空间方向关系形式化描述研究(二) 总被引：2，自引：0，他引：2
详细阐述了基于 Voronoi图的空间方向关系形式化描述模型的建立 ,给出了模型的逻辑结构和空间方向的计算过程。为了应证模型的正确性 ,文章给出了应用该模型计算空间方向的几个例子 ,并在最后总结了模型的优缺点 相似文献
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提出一种基于网络Voronoi面域图的最大覆盖选址模型及相应的粒子群优化方法,并应用于城市响应时间敏感型公共服务设施的空间优化。本文考虑设施功能沿交通网络辐射以及需求非均匀分布情形,对设施在网络连续空间上进行布局优化,选址模型采用网络Voronoi面域图划分布局设施的功能辐射域,以启发空间优化最小化重叠覆盖。模型同时顾及了设施利用率的最大化,规定设施对给定距离以内的需求实行的完全服务覆盖和对给定距离以外的需求实行随距离衰减的部分服务覆盖。本研究提出基于遗传机制和广义Voronoi图改进的粒子群算法以提高其空间优化性能,通过对南京市消防站最大覆盖空间优化实验表明,该研究取得了较为理想的结果,可应用于城市化区域应急设施最大覆盖空间优化。 相似文献
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近年来,灾害是世界各国生存与发展面临的重大问题,防范和应对灾害是全人类的共同挑战。本文针对目前的社会现象,以一个自然人的身份从社会的视角来分析应急保障类专题地图的现实情况、实用价值和防范于未然的必要性。 相似文献
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A Predictive Model for Frequently Viewed Tiles in a Web Map 总被引：1，自引：0，他引：1
Distributing pre‐generated image tiles from a server‐side cache is a fast and popular way of serving maps on the Web. However, these caches can grow unmanageably large for maps covering many scales over a broad extent. This research presents a model for determining high‐priority geographic areas for tile caching. The model considers variables found in previous research to be of interest to Web map users, such as populated places, major roads, coastlines, and tourist attractions. The proportion of area, disk space, and time saved when creating a partial cache (consisting only of high‐interest areas) and a cache of the entire map extent are compared to establish that marked savings are possible. Several applications of the model beyond tile caching are briefly discussed. 相似文献
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本文提出了利用空间数据库和GIS技术整理分析方志、古籍的研究方法,结合《中国古代重大自然灾害和异常年表总集》中记载的各种自然灾害信息,采用面向对象的Geodatabase数据模型,建立了中国全区域的,多朝代的,多自然灾害要素的,带有地理特征的关系型数据库,实现了数据的统一描述与管理,并根据专题数据制作了单一灾害要素、多种灾害要素的专题地图,可视化分析了历史自然灾害的时空分异,最后将地图进行网络发布以实现数据共享。结果表明GIS有利于方志、古籍的数字化整理与分析,实现了以信息技术保护、传播和有效的利用方志资料。 相似文献
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在地质灾害防治规划中《地质灾害现状及易发区、危险区（点）分布图》和《地质灾害防治规划图》分别是一定区域内地质灾害点（区）现状及未来防治任务的直观体现。本文论述MAPGIS二次开发软件Section和Microsoft Office Excel软件在编辑制作该类图件的交互应用和体会。 相似文献