# cellsTij: Entries for the Types I-IV cell-specific tests In nnspat: Nearest Neighbor Methods for Spatial Patterns

 cellsTij R Documentation

## Entries for the Types I-IV cell-specific tests

### Description

Returns a `matrix` of same dimension as, `ct`, whose entries are the values of the Types I-IV cell-specific test statistics, T^I_{ij}-T^{IV}_{ij}. The row and column names are inherited from `ct`. The type argument specifies the type of the cell-specific test among the types I-IV tests. Equivalent to the function `tct` in this package.

### Usage

```cellsTij(ct, type = "III")
```

### Arguments

 `ct` A nearest neighbor contingency table `type` The type of the cell-specific test, default=`"III"`. Takes on values `"I"`-`"IV"` (or equivalently `1-4`, respectively.

### Value

A `matrix` of the values of Type I-IV cell-specific tests

Elvan Ceyhan

### References

\insertAllCited

`tct` and `nnct`

### 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)
ct

type.lab<-c("I","II","III","IV")
for (i in 1:4)
{ print(paste("T_ij values for cell specific tests for type",type.lab[i]))
print(cellsTij(ct,i))
}

cellsTij(ct,"II")

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

#############
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)
cellsTij(ct,2)

ct<-matrix(c(0,10,5,5),ncol=2)
cellsTij(ct,2)

```

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