Quadrat Analysis_RW_Thomas

2ii and counting the number of points falling within

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: r of points falling within each cell. We will define the individual observation as IN, which is the number of points located in the ith cell. For any pattern there will be n cells and r points. In this example n = 36 and r = 21. We obtain the frequency distribution of the point pattern by counting the number of cells containing exactly m points for all values of m between 0 - Acknowledgement Thanks are due to Peter Lloyd for permission to reproduce material from the N.W. Industrial Data Bank; to Fiona Hill for typing the original manuscript, and to Clive Thomas for preparing the diagrams. It will prove helpful if we note two obvious characteristics of the frequency array describing a particular point pattern. To be a valid representation of the pattern the frequency array must obey the following two constraints: (1 ) that is, the sum over the number of cells containing m points must equal the total number of cells, and (2) that is, multiplying the number of cells containing m points by m, and summing over m, must give the total number of points comprising the pattern. The calculation of both these form...
View Full Document

This note was uploaded on 02/15/2012 for the course GEO 6938 taught by Professor Staff during the Summer '08 term at University of Florida.

Ask a homework question - tutors are online