Bivariate Area Chart
A bivariate area chart displays daily high and low temperatures in San Francisco over two years, using a filled band to show the temperature range between the two values. The data comes from a TSV file provided by the National Climatic Data Center and is rendered as a single SVG path. The visualization is built with D3 v3, employing d3.tsv for data loading, d3.time.scale for the x-axis, d3.scale.linear for the y-axis, and d3.svg.area to generate the band shape. Axes are drawn using d3.svg.axis with conventional margins.
AI-generated descriptionThis two-value area chart is constructed from a TSV file storing the daily high and low temperature in San Francisco over the last two years. Data is from the National Climatic Data Center. The chart employs conventional margins and a number of D3 features:
- d3.tsv - load and parse data
- d3.time.format - parse dates
- d3.time.scale - x-position encoding
- d3.scale.linear - y-position encoding
- d3.extent, d3.min and d3.max - compute domains
- d3.svg.axis - display axes
- d3.svg.area - display area shape