Extending the applicability of viewsheds in landscape planning
Extending the applicability of viewsheds in landscape planning
复制标题
扩展视域在景观规划中的适用性
DOI：
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发表时间：
1996
影响因子：
1.3
通讯作者：
P. Fisher
中科院分区：
文献类型：
--
作者：
P. Fisher
下面是对建议的变量的总结，并从它们对数据库错误的敏感性的角度重新确定可见区域或视野。最后，一个可讨论的观点是，在一个landscope是一个广泛的availa-锡永如何这些变量可能被用来响应在一个GIS的功能。对提出质疑的问题的重新考虑。然而，由视域组成的函数往往不能正确地处理它们。这导致了替代视域功能的规范，旨在提供灵活的结果，可用于直接响应查询。备选方案包括视野视域、局部偏移视域、全局偏移视域以及所有这三种视域的反向查看版本。这些替代视域功能的应用程序来回答查询的景观和二进制视域是不能够准确或灵活地作出反应。
There follows a summary of the proposed variants, and a re~h~ determination of the visible area or viewshed from a view of their sensitivity to database error. Finally, a discusviewing point looking out on a landscope is a widely availa- sion of how these variants may be used to respond to the ble function in a GIS. A reconsideration of the oueries which queries is presented. ma; be made of the viewshed, however, reveal; that often the function does not address them correctly. This has led to the specification of alternative viewshed functions intended to give flexible outcomes which can be used to respond to the queries directly. The alternatives include the horizons viewshed, the local offset viewshed, the global offset viewshed, and reverse viewing versions of all three. Applications of these alternative viewshed functions to answer queries about the landscape and the view which the binary viewshed is not able to respond to either precisely or flexibly are examined.