{"version":"1.0","type":"rich","title":"Multi Line Plot","description":"This multi-line chart visualizes daily fitness trends—steps, calories burned, and average heart rate—over a 150-day period. The data is loaded from a CSV via `d3.csv` and rendered as three overlaid lines, each scaled to a common y-axis using fixed multipliers. The visualization uses D3 v7's `scaleLinear`, `axisBottom`, `axisLeft`, and `line` generators, with an SVG grid and legend, to compare the metrics' daily evolution.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4d66289d36564612a3a5d42384c7dd87?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}