This example shows a scatterplot of points from a CSV file, rendered as rotated hexagonal polygons with a radial gradient effect. The visualization maps x and y values from the data to linear scales, while a dropdown menu toggles the fill color between white and a data-driven color attribute. Using React with D3 v7, polygons are drawn as SVG elements with configurable rotation, scale, stroke color, and width. The code uses d3.scaleLinear, d3.scaleOrdinal, and d3.extent to handle scaling, with tooltips showing formatted values via d3.format.