This radar chart compares life satisfaction across seven dimensions—such as happiness, work, and housing—for three consecutive years (2013–2015). It uses D3.js version 3 to render an animated SVG with circular grid levels, axis lines, and overlaid colored polygons. The code employs ordinal color scaling, linear radial scaling, and percentage formatting, drawing data from an inline dataset. A glow filter and rounded strokes enhance the visual presentation.