A chord diagram visualizes transitions between service types for recidivists in the Santa Clara County Homeless System. Chords connect one assistance type to the next, with mouseover revealing the direction of each transition. The code uses a custom `customChordLayout` function, based on D3’s `d3.layout.chord`, to reduce chord overlap, and applies linear gradients to show source and target colors. Data comes from a hardcoded matrix of transition counts; the rendering uses SVG with Bootstrap tooltips. The visualization omits same-service returns and is noted as ineffective at showing transition order.