2Heywood.Introduction to Geographical Information Systems[M].New York: Addison Wesley Longman,1998.
3Paul Longley, Michael Goodchild, David Maguire, David Rhind. Geographic Information Systems and Science (2^rd Edition) [M]. Chichester:John Wiley & Sons and ESRI Press,2005.
4Gehlke, C. Biehl, K. Certain Effects of Grouping Upon the Size of the Correlation Coefficient in Census Tract Material[J].Journal of American Statistical Association,1934,29.
5Openshaw, S. The Modifiable Areal Unit Problem, Concepts and Techniques in Modem Geography[M].Norwich:Geo Books, 1984.
6Cressie N. Statistics for spatial data[J]. Terra Nova, 1992,4 (5):613-617.
7Openshaw S. The modifiable areal unit problem[M].Con- cepts and Techniques in Modem Geography. Norwich: Geo Book, 1984.
8Goodchild M F. Issues of quality and uncertainty[M]. New York: Elsevier,1991.
9Gehlke C, Biehl K. Certain effects of grouping upon the size of the correlation coefficient in census tract material [J]. J Am Stat Assoc, 1934,29(185): 169-170.
