Nothing
convexhull <- function(x, y=NULL,...)
{
len = length(x)
if(is.null(y))
{
if(!is.matrix(x)) stop ("first argument pt must be a 2 dimensional matrix");
x1=as.double(x[,1])
y=as.double(x[,2])
x=x1
len=len/2;
}
id=chull(x,y)
sz=length(id)
x2=matrix(rnorm(sz))
y2=matrix(rnorm(sz))
for(i in 1:sz)
{
x2[i] = x[id[i]]
y2[i] = y[id[i]]
}
return(cbind(x2,y2));
}
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