A TEST OF SPATIAL RANDOMNESS ON SMALL SCALES, COMBINING INFORMATION FROM MAPPED LOCATIONS WITHIN SEVERAL QUADRATS

被引：3

作者：

SHAW, MW ^{[1
]}

机构：

[1] UNIV BRISTOL,LONG ASHTON RES STN,AFRC,INST ARABLE CROPS RES,DEPT AGR SCI,BRISTOL BS18 9AF,AVON,ENGLAND

来源：

BIOMETRICS | 1990年 / 46卷 / 02期

关键词：

D O I：

10.2307/2531449

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A method is proposed for testing whether points mapped within square quadrats are randomly distributed within the quadrats, independent of their distribution between quadrats. It is based on a comparison of the distribution of a subset of interpoint distances with that expected under the null hypothesis. The critical values of the test, determined by simulation, depend only on total sample size. The power of the test is shown graphically at a size of 5% against aggregated and regular alternatives Poisson-distributed on larger scales. Power depends strongly on sample size, weakly on point density. A program to calculate the test is available.

引用

页码：447 / 458

页数：12

共 9 条

[1]

[Anonymous], 1956, NONPARAMETRIC STAT B

[2] STATISTICAL-ANALYSIS OF SPATIAL POINT PATTERNS BY MEANS OF DISTANCE METHODS [J].