GIS by ESRI™
Welcome to ArcGIS Geostatistical Analyst
Welcome to the ESRI® ArcGISŽ Geostatistical Analyst extension for advanced surface modeling using deterministic and geostatistical methods? Geostatistical Analyst extends ArcMapŽ by adding an advanced toolbar containing tools for exploratory spatial data analysis and a geostatistical wizard to lead you through the process of creating a statistically valid surface? New surfaces generated with Geostatistical Analyst can subsequently be used in geographic information system (GIS) models and in visualization using ArcGIS extensions such as ArcGIS Spatial Analyst and ArcGIS 3D AnalystŽ?
Geostatistical Analyst is revolutionary because it bridges the gap between geostatistics and GIS? For some time, geostatistical tools have been available, but never integrated tightly within GIS modeling environments? Integration is important because, for the first time, GIS professionals can begin to quantify the quality of their surface models by measuring the statistical error of predicted surfaces?
Surface fitting using Geostatistical Analyst involves three key steps (demonstrated on the following pages):
LExploratory spatial data analysis
LStructural analysis (calculation and modeling of the surface properties of nearby locations)
LSurface prediction and assessment of results
The software contains a series of easy-to-use tools and wizards that guide you through each of these steps? It also includes a number of unique tools for statistical spatial data analysis?
Exploratory spatial data analysis
Using measured sample points from a study area, Geostatistical Analyst can create accurate predictions for other unmeasured locations within the same area. Exploratory spatial data analysis tools included with Geostatistical Analyst are used to assess the statistical properties of data such as spatial data variability, spatial data dependence, and global trends.