plot

Yup. There’s some discussion of this in this issue https://github.com/observablehq/plot/issues/359, which notes that the ~100 test plots in https://github.com/observablehq/plot/tree/main/test/plots are rendered by Node with JSDOM by https://github.com/observablehq/plot/blob/main/test/plot.js.

Thanks for the feedback. There’s a test in the repo that does parallel coordinates: https://github.com/observablehq/plot/blob/main/test/plots/ca... It’s not a perfect fit for Plot because Plot wants at most one instance of each scale in a plot. (I.e., Plot isn’t designed to support dual-axis charts where you have two y scales. Dual-axis charts tend not to be a good idea anyway.) So to implement parcoords we use a normalize transform to map values to [0, 1] and then render axes manually. We might revisit this topic in the future as Plot grows. I agree that parcoords are very useful for initial exploration, especially with interactive filtering. It would also be reasonable to have a more specialized component for parcoords — not everything has to live in Plot. For example we found ourselves making a lot of dashboards of time-series data, so