{"version":"1.0","type":"rich","title":"ROI (Return on Investment) Calculator ","description":"This interactive real estate investment calculator evaluates property performance by computing monthly cash flow, cash-on-cash ROI, cap rate, and a 10-year projection of equity and cash flow. Users adjust purchase price, financing, income, and expenses in a React form, with D3.js rendering an animated SVG bar chart of the cash flow breakdown and a multi-line projection chart with hover tooltips. The visualizations use d3.scaleBand, d3.scaleLinear, d3.line, and ResizeObserver for responsive sizing.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/db355d70c5fe401b974212338cbfe19b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}