Stat 5810, Applied Spatial Statistics

Project 1 (11/6/00)

30% of your course grade - Due Mon 11/20/00 in class


In Section 4.7, Bailey/Gatrell write "most of the results reported in this chapter were obtained using the software SPLANCS". SPLANCS is now available on our system and can be activated via library(splancs) from within S-Plus. Note that SPLANCS and the module "spatial" are not fully compatible. If you want to use both at the same time (outside this project), make sure to carefully transfer your intermediate results from one format to the other. In addition to the Rowlingson/Diggle paper, additional information on SPLANCS can be found at
http://www.maths.lancs.ac.uk/Software/Splancs/

Group 1: Use the "theft from property offences" data in Oklahoma City presented in Bailey/Gatrell and verify the results from Section 4.2 (Analysis of Multiple Types of Events) in Bailey/Gatrell using S-Plus and SPLANCS.

Goup 2: Use the "larynx and lung cancer" data of Lancashire presented in Bailey/Gatrell and verify the results from Section 4.4 (Correcting for Spatial Variations in the Population at Risk) in Bailey/Gatrell using S-Plus and SPLANCS. Take the lung cancer data as the "control" process.

When performing your analysis, you should use S-Plus and SPLANCS only. Try to avoid to use the module "spatial" if possible.

Your report for this project should be step-by-step instructions how to conduct your analysis in S-Plus and SPLANCS, similar to the instructions for the "volcanic craters" and the "pines" data sets presented in class.

You also have to teach the other group how to conduct this analysis. Each group has about 25 to 30 min during our lab session on Monday 11/20/00 for their presentation. Note that the other group may not use the same SPLANCS commands you use, so a short explanation of each new command might be helpful. During your presentation, you should allow the other group to spend a few minutes on each task before you show and explain the solution.

Your instructions should contain a point 0) that describes the steps required to extract your data set from the Bailey/Gatrell floppy disk (you can assume that INFO-MAP is properly installed and don't have to describe how to install it). For your in-class presentation, you can omit point 0) and start where the raw data (as extracted from Bailey/Gatrell) is available through a Web site.