This visualization uses the classic Iris dataset to display flower measurements as horizontal bar charts. The chart is implemented with D3 v7, using `d3.scaleBand` for species categories on the y-axis and `d3.scaleLinear` for measurement values on the x-axis. Each rect bar is colored by species via an ordinal color scale, and hovering over a bar reveals a tooltip showing the attribute, species, and value. The graphic also includes a legend and axis labels, with data loaded from a CSV file.