SAKWeb© – Spatial Autocorrelation And
Kriging Web Service
Author(s)
J. Negreiros & M. Painho
Abstract
SAKWeb is the result of research integrating developments in spatial
autocorrelation and Kriging as well as in Web services. This paper presents the
first Web application to offer spatial autocorrelation and association measures,
spatial exploratory tools, variography, Ordinary Kriging (OK) and Simple
Kriging with global mean (SK). SAKWeb© version 2.0 exploits IE®, ASP®,
PHP® and IIS® capabilities and was designed in an attractive and straightforward
way for everyone’s use. Major features are presented in summary. As confirmed
by the survey to GIS users, researchers suggest that this Web service and its
enhanced developments are a promising alternative for the near future, including
its use in an E-learning environment.
Keywords: geostatistics, spatial autocorrelation, kriging, web services,
E-learning.
1 Introduction
Spatial analysis technology is now beginning to reach the stage where advanced
users are struggling with new methods of spatial exploratory data analysis
relating to possible explanations for any spatial phenomena. From an explanation
of the unitary to a description of the collective, all views of space are correct if
the where question is answered, what spatial correlations exist and why spatial
distribution is structured in that way. Hence, this article mainly focuses on
methods that address the inherent stochastic nature of patterns, interpolation and
relationships based on measured point properties such as spatial autocorrelation
and Kriging rather than deterministic ones such as buffering areas.
Keywords
geostatistics, spatial autocorrelation, kriging, web services,
E-learning.
Related Book
Other papers in this volume
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