Fig. 4
From: 1H NMR based urinary metabolites profiling dataset of canine mammary tumors

Hierarchical clustering with dendrogram and principal component analysis (PCA) plots. Red: benign, green: malignant, blue: normal subjects. (a) Dendrogram of 156 samples. (b) PCA plot of the raw data. The points on the plot represent the samples. (c) PCA plot of the preprocessed data after filtering the outlier samples.