This radar chart compares smartphone attributes across three brands—iPhone, Samsung, and Nokia—using survey data on criteria like battery life, design, and price. Each axis represents an attribute, with five concentric grid levels indicating value percentages. The D3.js (v3) visualization uses ordinal color scales, SVG rendering, and a glow filter to highlight each brand’s polygon. Interactive tooltips and legend styling enhance readability, while the chart’s animation and rounded strokes are configured through the `RadarChart` function.