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Gantt graph

A Gantt chart presents a graphic view of a project schedule.

Graphics Server’s Gantt chart is a specialized version of the horizontal bar graph in simple or stacked form. It’s used almost exclusively to show a project schedule, with each bar or bar segment marking the start time, duration, and completion time of a task.

• Depending on your needs, you can have each bar represent either a single task (one solid bar) or a sequence of tasks (stacked bar).
  
  
• Gantt charts are made up of at least two data sets. The first set contains the values for the start point of each bar, and subsequent sets contain the end points of each bar segment.
  
  
• Unlike bar graphs, Gantt charts are always drawn horizontally and only in 2D form.
  
  
• Graphics Server automatically places Gantt bars along the Y axis at increments of 1, starting at 1.
  
  
• In default form, Gantt chart bars are drawn with no spaces between them. You can add spaces if you choose.
  
  
• You can’t show negative data points on a Gantt chart.
  

Use a Gantt chart...

• To graph a project schedule when you know the start time and end time for each task.
  
  

Other graph types to consider

• If every task starts at the same point, you can use a simple or stacked bar graph to show the same information.
  

Each bar can show either a single task (as here) or multiple tasks. You also have the option to add spaces between the bars.