1 Matching Annotations
- Feb 2025
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www.datavis.ca www.datavis.ca
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Parallel sets Parallel coordinate plots provide a way to display multidimensional data in 2D plots. They do this by representing the variables as a set of parallel axes, and showing each observation as a line in parallel coordinate space, rather than as a point in standard coordinate space. Extensions of this idea for categorical data led to “parallel sets plots”, and some variations, a number of which use the Titanic data for examples. Bendix, Kosara, and Hauser (2005) Parallel sets: Visual analysis of categorical data and Kosara:2006-parallel Parallel sets: Interactive exploration and visual analysis of categorical data developed an interactive system to explore multivariate categorical data using parallel sets, in which the lines between categories of successive variables are of width proportional to the joint frequencies.
Due to the lack of visual clarity, I struggled to understand what 2005 parallels sets were actually representing in this context (especially when external searching seems to tell me that these types of plots are usually formatted horizontally), to the point of forgetting how most of these charts are tracking how of a certain grouping lived/died from the sinking, which makes me question on what benefits we get from them. I do appreciate the 2013 charts not only for an accurate line widths, but being clear enough with the color and shade distinctions in certain lines to make clear what feeds into what (although I do wish the "Survived" category was either on top or bottom rather than the middle).
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