SADIE is a system developed to do spatial analysis on data from ecology,
especially data in the form of counts at spatially-referenced locations.

SADIE is an acronym for Spatial Analysis by Distance IndicEs


Simple introductions:
What is involved in spatial analysis, for one set of data?
How can we analyse spatial data in the form of counts using SADIE?
What is spatial association, spatial analysis for two sets of data?


More detailed technical stuff:
Downloads
SADIE publications list




What's new?



You can now download recently written
software to measure and test local association.
The earlier software has now been rewritten in Fortran, to give this standalone version, available since late-November 2001.



New versions of shells are now available for downloading. They are GUIs: graphical user interfaces that make it easy to perform SADIE analyses and manage data files. These are greatly updated versions of the previous SADIEShell and related programs, and were written by Kelvin Conrad. Kelvin's shells are available for the analysis of spatial pattern, to measure clusters, to analyze spatial association, and to facilitate complex sequences of computations.






Frequently asked questions & tips for using SADIE
The first two of a compendium of answers to questions that are often asked about SADIE. I hope you find them useful!








Follow these links for further details and to download reprints arising from a major project on spatial pattern analysis. In January 2000, I was fortunate to be invited to a workshop in Santa Barbara, California, funded by NCEAS, the National Center for Ecological Analysis & Synthesis, Santa Barbara, California, USA. The workshop, organised by Sandy Liebhold and Jessica Gurevitch, was entitled 'Integrating the Statistical Modeling of Spatial Data in Ecology'. We produced several papers, published in a special issue of the journal Ecography, in November 2002.





Other SADIE information:
SADIE for mapped data (under construction)
SADIE news (under construction)
The SADIE logo (under construction)





is developed by Joe Perry -


View Joe’s other home pages for his work in population dynamics,
GM crops, and information on his general research in ecology and biometry.

Contact Joe N. Perry

It is a pleasure to acknowledge
the immense contribution of
Kelvin Conrad in the construction
of these pages, without whose
help and encouragement they
could not have been created.

Comments and suggestions about
the SADIE website are always welcome