Isolation xPx_k, the correlation ratio eta2_k = (xPx_k - P_k) / (1 - P_k), and
with a distance matrix Morgan's distance-decay isolation.
Usage
IsolationIndex(x, exact = FALSE, distance = NULL, beta = 1)
Arguments
- x
Units x groups count matrix.
- exact
Sample without replacement.
- distance
Optional distance matrix.
- beta
Decay rate.
Value
list(xPx, eta2, DPxx).
References
Massey, D. S. and Denton, N. A. (1988). Social Forces 67, 281-315.
White, M. J. (1986). Segregation and diversity measures in population
distribution. Population Index 52, 198-221.
Examples
IsolationIndex(rbind(c(10, 0), c(0, 10)))$xPx
#> [1] 1 1
