{"version":"1.0","type":"rich","title":"Fork of Brush, Trendline, Legend, Linechart, Barchart","description":"The visualization shows groundwater monitoring data from two observation wells at the Bog of the Ring, plotting water levels over time as a line chart with a brushed time-range selector below. A dashed linear regression trendline appears for the selected period, calculated via the least-squares method in the `Regression.js` module. The implementation uses D3 v5 APIs including `d3.brushX`, `d3.scaleTime`, `d3.scaleLinear`, `d3.nest`, and `d3.line`, rendering to SVG with a categorical color scale to distinguish the two wells. Data is loaded from external CSV files.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/250117b7dcfc42ada450ae50ec26dfbb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}