PCA Biplot

Distributions

The distribution family: histogram, violin, KDE density (single / overlay / combined), and split bar. Use a histogram when bin counts matter, a density plot when the shape matters, a violin when you want both shape and summary, and a split bar to highlight a subgroup difference within each category.

County Choropleth

A US county choropleth rendered as inline SVG from a caller-supplied TopoJSON, with theme diverging or sequential ramps, state borders, and a hover tooltip. Use it for print-quality county maps in articles; for zoomable, high-cardinality maps reach for the MapLibre engine instead.

County Choropleth (diverging)

The county choropleth tuned for residual / above-or-below maps: a diverging color scale centered on a reference value (the national mean or zero), so counties read as positive vs. negative at a glance. Same component as County Choropleth — just a centered three-stop domain. Derived from the diverging county maps across the birth_death + Politics data stories (e.g. two-despairs, merchant-right-county-residuals).

Scatter Cloud

A point cloud with an optional y=x parity line, a binned-mean summary line, and quadrant annotations. Use it for rank-rank or before/after relationships where the reader should see both the dispersion and the central tendency.