Pitney Bowes MapInfo Vertical Mapper - Manual (Page 54)

Custom Point Estimation
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Vertical Mapper 3.7
• The Count option counts the number of points found within the search area or within the number
of selected points.
• The Median Value option returns the middle value of all the points within the search area or
within the number of selected points.
The Extents button displays a summary of the geographic size and the z-value range of the original
point database, the density of the points, and the data value units.
Suggested Reading on Interpolation Techniques
For further information that covers interpolation and contouring techniques, including an exhaustive
reference list, refer to:
Watson, D.F., 1992: Contouring: A Guide to the Analysis and Display of Spatial Data. Elsevier
Science Inc., Tarrytown, New York, NY.
For information on the fifth-order bivariate interpolation applied to the TIN solution, refer to:
Akima, H., 1978: A Method for Bivariate Interpolation and Smooth Surface Fitting for Irregularly
Distributed Data Points. ACM Transactions on Mathematical Software, v.4, no. 2, pp. 148-159.
Natural Neighbours
Gold, C.M. and Roos, T., 1994: Surface Modelling with Guaranteed Consistency – An Object-
Based Approach in Nievergelt, J., Roos, T., Schek, H.-J., and Widmayer, P. (eds.), IGIS’ 94,
Proceedings of the International Workshop on Advanced Research in Geographic Information
Systems, Lecture Notes in Computer Science 884; Springer-Verlag, pp. 70-87.
Kriging
Olea, R., editor, 1991: Geostatistical Glossary and Multilingual Dictionary. Oxford University
Press, New York, NY.
Deutsch, Clayton V., and Journel, Andre G., 1992: GSLIB, Geostatistical Software Library and
User’s Guide. Oxford University Press, New York, NY.
Isaaks, Edward H., and Srivastava, R.Monah, 1989: Applied Geostatistics. Oxford University
Press, New York, Oxford.
Goldberger, A., 1962: Best Linear Unbiased Prediction in the Generalized Linear Regression
Model. JASA, 57: pp. 369-375.