This example visualizes the growth of an Algae L-System over 16 iterations, where each row represents one iteration and each filled rectangle marks the position of the symbol "A" in the generated string. The visualization uses React to render an SVG, with d3.scaleBand mapping string indices to x-coordinates and iteration numbers to y-coordinates. The L-system rules (A becomes AB, B becomes A) are applied iteratively to generate the data, which grows exponentially in length.