prob.nnct

Computes the probability of the observed \(2 \times 2\) nearest neighbor contingency table (NNCT) 
\(p_t=f(n_{11}|n_1,n_2,c_1;\theta)\) where \(\theta=(n_1-1)(n_2-1)/(n_1 n_2)\) which is the odds ratio
under RL or CSR independence and
\(f\) is the probability mass function of the hypergeometric distribution.
That is, given the margins of the current NNCT, the probability of obtaining the current table with the odds
ratio \(\theta\) being the value under the null hypothesis.
This value is used to compute the table-inclusive and exclusive \(p\)-values for the exact inference on NNCTs.
See (ceyhan:exact-NNCT;textualnnspat) for more details.

Contains the functions for testing the spatial patterns (of segregation, spatial symmetry,
association, disease clustering, species correspondence, and reflexivity) based on nearest neighbor relations,
especially using contingency tables such as
nearest neighbor contingency tables (Ceyhan (2010) <doi:10.1007/s10651-008-0104-x> and
Ceyhan (2017) <doi:10.1016/j.jkss.2016.10.002> and references therein),
nearest neighbor symmetry contingency tables (Ceyhan (2014) <doi:10.1155/2014/698296>),
species correspondence contingency tables and reflexivity contingency tables (Ceyhan (2018)
<doi:10.2436/20.8080.02.72> for two (or higher) dimensional data.
The package also contains functions for generating patterns of segregation, association,
uniformity in a multi-class setting (Ceyhan (2014) <doi:10.1007/s00477-013-0824-9>),
and various non-random labeling patterns for disease clustering
in two dimensional cases (Ceyhan (2014)
<doi:10.1002/sim.6053>), and for visualization of all these patterns
for the two dimensional data.
The tests are usually (asymptotic) normal z-tests or chi-square tests.

Elvan Ceyhan

nnspat

Nearest Neighbor Methods for Spatial Patterns

prob.nnct function

Arguments

Author

Probability of the current nearest neighbor contingency table — prob.nnct

prob.nnct: Probability of the current nearest neighbor contingency table

Description

Usage

Value

Arguments

Author

References

See Also

Examples