This example displays a dense scatter of geographic coordinates, plotting the sets of longitude and latitude points from a CSV file as small dots. An SVG canvas renders the points, with the visualization’s intended purpose being to reveal the underlying shape or pattern of the data—likely a coast or border—as the points are ordered sequentially. The code uses d3.select to append the SVG and relies on the D3 v4 library for basic rendering, though it does not yet map the data to visual elements. The default text label remains, awaiting replacement by the user’s implementation.