Nothing

```
### Wrapper for the covariance matrix of fourth moments
### calls depending on the location argument different subroutines
###
`cov4` <-
function(X, location="Mean", na.action=na.fail)
{
X<-na.action(X)
X.matrix<-as.matrix(X)
p <- dim(X)[2]
if (p<2) stop("'X' must be at least bivariate")
if(is.numeric(location))
{
if(length(location)!=p) stop("'location' is of wrong dimension")
X.matrix<-sweep(X.matrix,2,location)
location="Origin"
}
loc<-match.arg(location,c("Mean","Origin"))
if (loc=="Mean")
V<-.cov4moments.mean(X.matrix)
if (loc=="Origin")
V<-.cov4moments.origin(X.matrix)
return(V)
}
```

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