D3 Course 1: Bar Chart

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D3 Course 1: Bar Chart

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Last edited Apr 6, 2020

Created on Apr 5, 2020

This example uses D3 v5 to visualize insertions and samples over time as a bar chart, a cursor ticker, and a blocking count curve. The main bar chart displays red and steel-blue rectangles representing sample and insert events, with linear scales mapping event start times and durations to x-positions and widths, while a band scale positions rows by assigned slot. Below, a stepped line generated with `d3.line` and `curveStep` shows cursor movement, and another line tracks blocking counts, both using `scaleLinear` and `axisLeft` with grid lines. Random data is generated programmatically in `data.js` and rendered to SVG.

AI-generated description

Data Visualization with D3 course; Bar Chart

<h3>Creating a Bar Chart</h3> <table> <th align="left">Topics</th> <tr> <td> <ul> <li>Representing a data table</li> <li>Creating rectangles for each row</li> <li>Using linear and band scales</li> <li>The margin convention</li> <li>Adding Axes <ul> <li>Formatting numbers</li> <li>Removing unnecessary lines</li> <li>Adding a Title</li> <li>Adding Axes labels</li> <li>Making tick grid lines</li> </ul> </li> </ul> </td> </tr> </table>

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