This visualization analyzes one year of earthquake data from Taiwan’s Central Weather Administration, showing seismic activity on a zoomable Mercator map and an interactive scatterplot. Users can select a year and adjust the x and y axes to explore correlations between magnitude, depth, and other attributes. The map uses d3.geoPath with topojson to render county boundaries, while the scatterplot applies d3.scales and axes. Circles are sized by magnitude and colored by selected categories, with hover tooltips and a legend that updates dynamically.