Spatial Data Modeller for
ArcGIS 9 and Spatial Analyst

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ARCSDM3 and DataXplore. Spatial Data Modeller 3 Extension for ArcMap 9.0 is now publicly available.

This package is a translation of the original Arc-SDM, but is designed to work with ArcGIS 9 (including Spatial Analyst). The original code was in Avenue. The new code is in Visual Basic, as ArcGIS no longer supports Avenue. As in the earlier package, Arc-SDM3 provides tools for weights of evidence, logistic regression, fuzzy logic and neural network analysis. The ultimate aim of all these methods is to combine two or more evidential themes to generate a response theme. In the situation of mineral exploration the response theme is a map that predicts favourability for mineral deposits of a particular type, defined either by a set of training points, or by a mineral exploration expert.

NOTE: Minor fixes for this version and and an ArcGIS 9.1 version expected soon.

Readme File Brief description of application and pre-download instructions.
Documentation Zip file with documentation including detailed installations instructions.
Carlin Dataset Test data


In citing this software, please use a reference in the following form:

Sawatzky, D.L., Raines, G.L. , Bonham-Carter, G.F., and Looney, C.G., 2004, ARCSDM3: ArcMAP extension for spatial data modelling using weights of evidence, logistic regression, fuzzy logic and neural network analysis.


The development of Weights of Evidence for ArcView was a GSC-USGS project, supported financially by the following companies:

  • Barrick
  • BHP-Billiton
  • Brazilian consortium consisting of the following organizations
    • UNICAMP- State University of Campinas
    • ADIMB - Agency for the Technical Development of the Brazilian Mining Industry
    • PETROBRAS - Petróleo Brasileiro S/A
    • CBRR - RADARSAT Resource Center in Brazil
    • UFRGS - Federal University of Rio Grande do Sul Cominco Ltd.
  • INCO Limited
  • Geological Survey of Canada
  • Geological Survey of Finland
  • Italian Consortium
    • Consiglio Nazionale delle Ricerche - Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni (CNR-IEIIT)
    • Consiglio Nazionale delle Ricerche - Istituto di Recerca per la Protezione Idrogeologica (CNR-IRPI)
  • Kenex Knowledge Systems
  • Placer Dome Inc.
  • U.S. Geological Survey

ARCSDM3 was developed by Don Sawatzky under the direction of Gary Raines (USGS) and Graeme Bonham-Carter (GSC)

DataXplore was developed by Carl Looney and Han Yu at the University of Nevada, Reno

GeoXplore a neural network tool has been added to ArcSDM. It was developed by Dr. Carl Looney and Zhiqiang Wang, both of the University of Nevada Reno.

SDM Contacts:

Gary Raines
US Geological Survey
Mail Stop 176
c/o Mackay School of Mines,
University of Nevada Reno
Reno, Nevada 89557-0047
Tel: (702) 784-5596
Fax: (702) 784-5079
Graeme Bonham-Carter
Geological Survey of Canada
601 Booth Street
Ottawa, Ontario, Canada
K1A 0E8
Tel: (613) 996-3387
Fax: (613) 996-3726
Don L. Sawatzky