Fig. 7
From: A practical primer for image-based particle measurements in microplastic research
Dendrogram for the clusters of nine different shape descriptors. The height represents the squared Eucledian distance between individual shape descriptors or clusters, which were formed by hierarchical agglomerative clustering using the centroid fusion algorithm. The color-highlighted shape descriptors are the best representative for the cluster. a.u.: arbitrary unit. C: compactness. F: R factor. FF: form factor. M: modification ratio. P: sphericity. R: roundnenss. RAR: reciprocal aspect ratio. S: solidity. X: convexity