Nothing
gromov.hyperbolicity <- function(d, deltas = FALSE, scale = NA)
{
d <- as.matrix(as.dist(d))
a = dim(d);
if(a[1] != a[2])
{
stop("The parameter could not be coerced into a square distance matrix.")
}
if(a[1] < 4)
{
stop("At least 4 points must be used to compute the Gromov hyperbolicity constant.")
}
if(is.na(scale))
{
scale = "none"
}
scaleV = pmatch(scale, c("none", "max", "perimeter"))
if(length(scaleV) > 1 || is.na(scaleV))
{
stop("Unknown or ambiguous scale method.");
}
.Call(gromov_distmatrix, as.double(d), as.logical(deltas),
as.integer(scaleV))
}
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