distratio: Distance ratio test statistics for distance based clustering
Description
Calculates the ratio between the prop smallest and largest
distances of a distance matrix.
Usage
distratio(distmat, prop = 0.25)
Arguments
distmat
symmetric distance matrix.
prop
numerical. Proportion between 0 and 1.
Value
A list with components
dr
ratio of prop smallest to prop largest distances.
lowmean
mean of prop smallest distances.
himean
mean of prop smallest distances.
prop
see above.
Details
Rounding is by floor for small and ceiling for large
distances.
References
Hennig, C. and Hausdorf, B. (2004) Distance-based parametric bootstrap
tests for clustering of species ranges.
Computational Statistics and Data Analysis 45, 875-896.