# EV.nnct: Expected Values of the Cell Counts in NNCT In nnspat: Nearest Neighbor Methods for Spatial Patterns

 EV.nnct R Documentation

## Expected Values of the Cell Counts in NNCT

### Description

Returns a `matrix` of same dimension as, `ct`, whose entries are the expected cell counts of the NNCT under RL or CSR. The class sizes given as the row sums of `ct` and the row and column names are inherited from `ct`.

### Usage

```EV.nnct(ct)
```

### Arguments

 `ct` A nearest neighbor contingency table

### Value

A `matrix` of the expected values of cell counts in the NNCT.

Elvan Ceyhan

### References

\insertAllCited

`nnct` and `EV.tct`

### Examples

```n<-20  #or try sample(1:20,1)
Y<-matrix(runif(3*n),ncol=3)
ipd<-ipd.mat(Y)
cls<-sample(1:2,n,replace = TRUE)  #or try cls<-rep(1:2,c(10,10))
ct<-nnct(ipd,cls)

EV.nnct(ct)

#cls as a factor
na<-floor(n/2); nb<-n-na
fcls<-rep(c("a","b"),c(na,nb))
ct<-nnct(ipd,fcls)
EV.nnct(ct)

#############
n<-40
Y<-matrix(runif(3*n),ncol=3)
ipd<-ipd.mat(Y)
cls<-sample(1:4,n,replace = TRUE)  #or try cls<-rep(1:2,c(10,10))
ct<-nnct(ipd,cls)

EV.nnct(ct)

ct<-matrix(c(0,10,5,5),ncol=2)
EV.nnct(ct)

```

nnspat documentation built on Aug. 30, 2022, 9:06 a.m.