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

 EV.rct R Documentation

## Expected Values of the Cell Counts in RCT

### Description

Returns a `matrix` of same dimension as the RCT, `rfct`, whose entries are the expected cell counts of the RCT under RL or CSR.

### Usage

```EV.rct(rfct, nvec)
```

### Arguments

 `rfct` An RCT `nvec` The `vector` of class sizes

### Value

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

Elvan Ceyhan

### References

\insertAllCited

`rct`, `EV.nnct` and `EV.tct`

### Examples

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

nvec<-as.numeric(table(cls))
rfct<-rct(ipd,cls)
EV.rct(rfct,nvec)

#cls as a factor
na<-floor(n/2); nb<-n-na
fcls<-rep(c("a","b"),c(na,nb))
nvec<-as.numeric(table(fcls))
rfct<-rct(ipd,fcls)
EV.rct(rfct,nvec)

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

rfct<-rct(ipd,cls)
EV.rct(rfct,nvec)

```

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