This research studies the spatial distribution quality of interpolation methods. The aims first to obtain unbiased estimator parameters based on regionalized variables in study field. We used kriging techniques (called Local interpolation) rely variogram function with a fuzzy inference system, where is an extension ordinary kriging. second objective this work estimate covariance models real dat...

The corrosion degradation of the steel sheet pile material accelerates in recent years. extremely accelerated induces thickness loss and decreases mechanical characteristics. It is essential to evaluate corroded situations for design maintenance infrastructures. In this study, spatial characteristics service canals were evaluated by geostatistics with variogram kriging. experimental procedures,...

This paper introduces the gstat package for the S language (R, S-PLUS). The package provides multivariable geostatistical modelling, prediction and simulation, as well as several visualisation functions. Gstat (http://www. gstat.org) was started 10 years ago and was released under the GPL in 1996; it is closely linked to several GIS systems. It was not initially written for teaching purposes, b...

Ordinary kriging and cokriging are two geostatistical techniques used to create continuous maps of spatially autocorrelated attributes. Both procedures use the same primary variable, but cokriging, like multivariate statistics, incorporates additional independent variables. In this study, the primary variable is cubic foot volume and the secondary variable, mean normalized difference vegetation...

The packages geoR and geoRglm are contributed packages to the statistical software system R, implementing methods for model-based geostatistical data-analysis. In this paper we focus on the capabilities of the packages, the computational implementation and related issues, and indicate directions for future developments. geoR implements methods for Gaussian and transformed Gaussian models. The p...

Spatial patterns of soil moisture across a field seem to exhibit some degree of temporal stability, which has been proved to be related to such invariant attributes as topography and soil characteristics. However, how these patterns and locations might be predicted from these attributes is not well understood. Motivated by a desire to understand these relationships, the objective of this study ...