Dual Space Coupling Model Guided Overlap-Free Scatterplot

Guaranteed Visibility in Scatterplots with Tolerance

“…ScatterplotUnfold [24] is an illustration of VS algorithms. Its goal is to make sure that the produced visualization preserves the distribution of node densities of the input layout while also trying to highlight outliers.…”

“…The quality metrics considered in this evaluation are taken or inspired from Li et al [24] and Chen et al [3,4]. We made adjustments to some selected metrics to better reflect their purpose.…”

“…the height) of the original layout's bounding box. Shape preservation Inspired by Li et al [24], this metric measures the preservation of the layout's global shape. We draw several concentric circles of increasing radius, centered on the initial layout's center of mass, noted µ(X).…”

“…In addition to data point positions, VS methods [6,15,24] also have access to rendering parameters such as screen resolution, opacity or data point screen sizes. In DGrid [15] and HaGrid [6] for instance, a grid (screen) resolution is used to determine candidate positions such that data points do not overlap.…”

“…In DGrid [15] and HaGrid [6] for instance, a grid (screen) resolution is used to determine candidate positions such that data points do not overlap. In ScatterplotUnfold [24], rendered data point sizes are non-uniformly modified to remove overlaps and enhance the visibility of outliers in sparse regions of the drawing. These methods may have different objectives.…”