{"version":"1.0","type":"rich","title":"Untitled","description":"This example demonstrates how D3 v3 renders SVG marker shapes used as line endpoints. It defines four distinct path geometries—circle, square, arrow, and stub—and attaches each as both a marker-start and marker-end to a corresponding element in a group. The code uses `d3.scale.category10` for colors, builds markers via SVG `<defs>`, and positions everything within a fixed margin layout. The visible result is a set of colored, marker-capped paths across the canvas, though the intended connecting lines are commented out.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/26fede2bbb2e42df8c23c6d0c833a0cb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}