Making Gantt charts
One form of very widely used visualization of time-based data is a Gantt chart. Named after the mechanical engineer Henry Gantt who invented it in 1910s, it is almost exclusively used to visualize work breakdown structures in project management. This chart is loved by managers for its descriptive value and not so loved by employees, especially when the project deadline is near.
This kind of chart is very straightforward, almost every one can understand and read it, even if it is overloaded with additional (related and unrelated) information.
A basic Gantt chart has a time series on the X axis and a set of labels that represent tasks or subtasks on the Y axis. Task duration is usually visualized either as a line or as a bar chart, ...
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