4,351 recorded country pairs with at least $50 million in combined trade connect 182 countries in 2014. These are annual flows, not shipping routes.
Countries are ordered by region, then recorded trade total. Node radius grows with the square root of total trade, with minimum and maximum sizes. Curve opacity grows logarithmically; overlapping light adds up. Arrows select countries; hover reads totals.
Correlates of War Dyadic Trade v4.0, Barbieri, Keshk & Pollins. Current US$ millions; 2014 is the final year. No explicit license found; the publisher requests citation.
Two import directions are summed for each pair; missing codes are excluded. Partner reports can differ. Nodes show totals for retained pairs, not all national trade. Color and inner hubs group regions, not geography.
Code: Luke Steuber, MIT. Data Poems.