### Name: corARMA
### Title: ARMA(p,q) Correlation Structure
### Aliases: corARMA coef.corARMA
### Keywords: models

### ** Examples

## ARMA(1,2) structure, with observation order as a covariate and
## Mare as grouping factor
cs1 <- corARMA(c(0.2, 0.3, -0.1), form = ~ 1 | Mare, p = 1, q = 2)