EXPLORATORY METHODS FOR SPATIAL AND TEMPORAL DATA

我们的研究目标是开发一个S-PLUS模块S+SpaceTime作为探索性数据分析的时空数据的环境。具有空间和时间属性的数据在流行病学和生物统计学中非常常见。需要特殊的探索方法来研究此类数据，以同时评估随着时间的推移观察到的环境暴露和健康结果。地理信息系统（GIS）在空间数据可视化方面非常有用。要同时评估健康结果与GIS需要进一步的研究接口，图形化的方法，时空建模。动态图形是时空数据可视化的最佳方法之一。GIS中的动态图形是计算密集型的研究。S-PLUS是一种面向对象的编程语言，能够与Java和ArcView GIS相连接。S+SpaceTime将提供可视化和建模环境。用户将能够链接统计图形窗口和GIS地图的过程中的时空建模。将编制一份全面的案例研究指南，以展示环境的优势。所得到的模块是有用的纵向数据，空间数据和时空数据的研究。拟议的商业应用：没有商业统计软件可以在建模过程中同时可视化和探索疾病发病率图和重复测量。S+SpaceTime为GIS和基于混合效应模型和时空过程模型的时空建模提供动态图形。随着S+SpatialStat、S+EnvironmentalStat和S-PLUS for ArcView的推出，拟议的软件研发是在这些重要领域和市场上努力的继续。

The objective of our research is the development of an S-PLUS module S+SpaceTime as an environment for exploratory data analysis of spatial- temporal data. Data with space and time attributes are very common in epidemiology and biometry. Special exploratory methods are desired in order to study these kinds of data for the simultaneous assessment of environmental exposures and health outcomes observed over time. Geographical Information Systems (GIS) are useful in visualizing spatial data. To simultaneously assess health outcomes with GIS requires further research on interface, graphical methods, and spatial-temporal modeling. Dynamic graphics is one of the best approaches to visualize spatial-temporal data. Dynamic graphics with GIS are computing intensive research. S-PLUS is an object-oriented programming language and is capable to link with Java and ArcView GIS. The S+SpaceTime will provide a visualization and modeling environment. User will be able to link statistical graphical windows and a GIS map in the processes of space-time modeling. A comprehensive case study guidebook will be developed to demonstrate the advantages of the environment. The resulting module is useful for studies on longitudinal data, spatial data, and spatial-temporal data. PROPOSED COMMERCIAL APPLICATIONS: No commercial statistical software is available to visualize and explore disease incidence maps and repeated measures simultaneously in the processes of modeling. S+SpaceTime provides dynamic graphics with GIS and space-time modeling based on mixed effects models and models for space-time processes. With S+SpatialStat, S+EnvironmentalStat, and S-PLUS for ArcView, the proposed software R&D is a continuation of efforts on these substantial areas and markets.