Các nhà nghiên cứu trong các ngành khoa học xã hội và nhân văn, như thể hiện trong phần 3 của khối lượng, phân tích nhiều hiện tượng được gây ra bởi, hoặc liên quan đến, không gian các yếu tố. Khi số lượng các yếu tố nhỏ, phân tích không gian với phương pháp thủ công là dể làm, nhưng khi số lượng lớn, phân tích mất thời gian, và nó thường trở thành intracta | 8_ How to Find Free Software Packages for Spatial Analysis via the Internet Atsuyuki Okabe Atsushi Masuyama and Fumiko Itoh CONTENTS Introduction .113 Search Engine at the CSISS Web FreeSAT A Web System for Finding Free Spatial Analysis The home page of The Spatial Analysis for Points The Spatial Analysis for Networks The Spatial Analysis for Attribute Values of Areas The Spatial Analysis for Continuous Surfaces Page .121 Tables of Software Introduction Researchers in the humanities and social sciences as shown in Part 3 of this volume analyze many phenomena that are caused by or related to spatial factors. When the number of factors is small spatial analysis with manual methods is tractable but when the number is large the analysis is laborious and it often becomes intractable. A few decades ago researchers themselves used to develop computer programs to alleviate this task. However the task required not only programming skills but also a lot of program-development time. As a result the use of spatial analysis had very limited application to the humanities and social sciences. Nowadays this difficulty has been overcome largely by the introduction of Geographical Information Systems GIS . 113 Copyright 2006 Taylor Francis Group LLC 114 GIS-based Studies in the Humanities and Social Sciences The ordinary GIS software provides many basic tools for spatial analysis for example Spatial Analysts in ArcGIS . However when we wish to carry out advanced spatial analysis the tools provided by ordinary GIS software are not always sufficient and we have to find advanced ways. Fortunately a considerable number of tools for advanced spatial analysis have been developed by the GIS community Walker and Moor 1988 Haslett et al. 1990 Openshaw et al. 1990 Openshaw et al. 1991 Okabe and Yoshikawa .
