共查询到20条相似文献，搜索用时 93 毫秒
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城市环境地图地理底图的设计 总被引：2，自引：0，他引：2
地理底图是所有专题地图或专题地图集的地理基础，其内容也是专题地图或地图集内容的一个重要组成部分。从制图与用图的角度考虑，地理底图在专题地图上对专题内容要素起着控制作用，亦是专题内容的背景要素。因此，地理底图内容要素的种类和表示的详略程度，主要取决于专题内容的特征。城市是多种环境要素的综合体，因此，城市环境地图在环境地图群中颇为复杂，对其地理底图的设计亦非同一般，需要多方位、广角度地考虑。现以编制《常州市环境预测对策图集》地理底图为例，谈一些见解。《常州市环境预测对策图集》是一部以城市为对象，包含… 相似文献
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专题地图的地理底图要根据所反映的专题要素的需要和地域特点来设计,在专题地图集中不应一味的追求地理地图的统一性而忽略了专题地图的真正目的和用途。这里仅对专题地图的地理底图的设计提出一些粗浅的认识仅供参考。 相似文献
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从《广州第十六届亚运会·亚运地图》的设计实践出发,总结体育专题地图的设计理念,分析总结大型体育运动会赛事专题地图设计的特点,即要在内容组织、结构组织、制作工艺、版式安排上,突出反映体育专题地图的设计理念。并对开本、比例尺、图面配置、地理底图及专题设计、符号系统、色彩系统展开讨论,进而探讨广州亚运会地图设计的特点。 相似文献
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网络数字专题地图的制作与发布研究 总被引：2，自引：0，他引：2
当前众多基础地理信息系统软件厂商大都基于"客户端构造模式"制作"网络电子地图",对于普通用户而言,其门槛过高,不利于"网络电子地图"的应用和推广.针对此情形,采用现今流行的矢量图形制作和发布技术--Flash技术,以数字专题地图的网络发布为最终目标,实现了"低门槛"的网络数字专题地图的制作与发布.介绍基于此技术制作各类数字专题地图的流程,结合网络数字专题地图原型系统,细述了地理底图和专题要素表示方法的设计,并着重探讨了专题信息动态更新机制的实现方式. 相似文献
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新闻地图已经成为互联网数字地图的典型应用,通过分析适用于移动端展示的各类新闻地图交互模板和专题要素表达规则,提出基于规则实现各类新闻专题地图表达方式自动选择的新闻专题地图发布平台设计方案。以微信公众号作为展示终端对地图发布平台的发布流程和可视化效果进行应用实验,初步实现不同类型新闻专题地图在移动端的展示。 相似文献
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专题地图的地理要素与专题要素内容的关系 总被引：1，自引：1，他引：0
地图是信息的载体,专题地图是突出地显示专题信息的地图,其制作原理和方法不断得到充实与发展。本文主要阐述编制专题地图基础要素即地理要素的资料收集、制图综合与专题地图要素之间的协调统一关系。 相似文献
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Integration of thematic maps through GIS for identification of groundwater potential zones 总被引：1，自引：0，他引：1
K. S. R. Murthy E. Amminedu V. Venkateswara Rao 《Journal of the Indian Society of Remote Sensing》2003,31(3):197-210
The remote sensing data combined with Geographical Information System (GIS) technique has been proved to be very efficient in identification of groundwater potential of any area. In the present paper, IRS 1 A, LISS II data has been used to identify the groundwater potential zones by integrating various thematic maps generated on 1:50,000 scale. These maps are integrated after assigning weight factors to the identified features in each thematic map depending upon their infiltration capacities and the groundwater potential zones in Bhamini mandai (developmental block) of Srikakulam district, Andhra Pradesh are demarcated. The area of investigation has been classified into seven groundwater potential zones. The present results show that integration of all attributes provides more accurate results in groundwater potential zones identification. 相似文献
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现有网络专题地图多由专家设计、制作,再进行网络发布,难以满足分布式环境下用户的在线制图需求。针对这一问题,定义了网络专题地图制图领域本体,根据此本体,利用Web Service技术实现了一个网络专题地图制图系统,并将其应用于分布式空间统计数据的在线专题制图。 相似文献
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专题地图集是关于某一区域自然资源、社会经济、发展规划等方面的专题信息的地图图幅集合.将专题地图集在网络环境下进行发布,使专题地图信息服务于大众具有很强的现实意义.针对网络环境下的专题地图集存在结构组织不统一、地图表达不够美观、专题数据更新滞后等问题,引入网络动态专题地图集的概念,设计使用xml(Extended mar... 相似文献
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空间信息共享和互操作是GIS发展永恒的主题，本文主要研究了网络专题地图服务平台的设计与实践，从数据目录管理、多源数据节点的远程访问与调度、专题地图的按需动态生成与发布等关键技术着手，研究实现了面向用户的空间信息与行业统计信息的集成共享与可视化。利用ASP．NET创建了网络专题地图服务门户，验证了所提出的框架体系和关键技术的合理性和可行性。 相似文献
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《The Cartographic journal》2013,50(4):292-303
AbstractThe presentation of graphics and maps on the Internet has led to the development of several new techniques. The use of dynamics and animations in maps has increased, and new types of applications are emerging frequently. Recently, several map providers on the web have introduced zooming in maps as an animated operation. In this paper, we look closer into how the animated zoom is perceived by participants in an experiment, and compare these observations with a corresponding test where the map scale is changed in more abrupt steps. The results indicate significant preference for the animated zoom. The experiment itself is carried out through the World Wide Web and all the participants made their contribution from their own computers. 相似文献
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The virtual globe is the default visualization for Digital Earth applications, but it can only show one half of the Earth. This article introduces user-adjustable, on-the-fly projection of georeferenced raster images for web mapping and web GIS applications. This technique allows users to center a map on arbitrary locations, while still seeing the entire Earth surface. Modern web mapping libraries can apply map projection transformations to vector data in the browser, but they do not currently support the projection of raster images at interactive frame rates. We use the cross-platform WebGL (Web Graphics Library) graphics pipeline for hardware-accelerated projection of raster data in web browsers. Two algorithmic techniques – inverse per-fragment projection, and combined forward per-triangle and inverse per-fragment projection – for georeferenced raster imagery are documented. The resulting raster maps combine the ease of use and flexibility of interactive virtual globes with the ability to show the entire Earth. The adjustable projection of raster imagery allows users to observe global phenomena that are difficult to visualize on virtual globes or traditional maps with static projections. 相似文献
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Noise annotation lines are a promising technique to visualize thematic uncertainty in maps. However, their potential has not yet been evaluated in user studies. In two experiments, we assessed the usability of this technique with respect to a different number of uncertainty levels as well as the influence of two design aspects of noise annotation lines: the grain and the width of the noise grid. We conducted a web-based study utilizing a qualitative comparison of 2 areas in 150 different maps. We recruited participants from Amazon Mechanical Turk with the majority being nonexperts with respect to the use of maps. Our findings suggest that for qualitative comparisons of “constant uncertainty” (i.e., constant uncertainty per area) in thematic maps, noise annotation lines can be used for up to six uncertainty levels. During comparison of four, six, and eight levels, the different designs of the technique yielded significantly different accuracies. We propose to use the “large noise width, coarse grain” design that was most successful. For “mixed uncertainty” (i.e., uncertainty is not constant per area) we observed a significant decrease in accuracy, but for four levels the technique can still be recommended. This article is a follow-up to our conference paper reporting on preliminary results of the first of the two experiments. 相似文献