In the R2 dataset of fulvene, which includes all non-equivalent atom-atom distances, it is noted that 68 columns are initially present, two of them corresponding to the index tuple of trajectory number and time. Therefore, the descriptor has 66 variables, with the molecular geometries represented in a high-dimensional vector format. Direct visualization of this correlated high-dimensional data is not feasible; however, dimensionality reduction techniques can be applied to reduce the 66 columns to two, allowing the representation of the geometry evolution in a simple 2D scatter plot.