Gantt Chart

This page describes the options that determine how the sequence is displayed in the GANTT chart. Depending on your licenses, you may have access to one or more of the following types of Gantt charts.

  • Process-centric  Gantt
  • Resource Utilization-centric Gantt
  • Manufacturing System-centric Gantt
  • Process-centric Resource Gantt

Unless otherwise specified, the options selected on this tab apply to all Gantt charts to which you have access. The options include:

Display Options

 

Time Bar for Parent Nodes Based On:
You can select whether the Gantt chart sequence for parent nodes is based on:
  • None (i.e., no bars are displayed for parent nodes)
  • Specified Cycle Time
  • Calculated Cycle Time

DThe default value is None.

Time Bar for Leaf Nodes Based On:
You can select whether the Gantt chart sequence for leaf nodes is based on:
  • Specified Cycle Time
  • Calculated Cycle Time

DThe default value is Specified Cycle Time.

Specified Time Color
You can select the color in which you want the specified time bar to appear.

DThe default value is the one shown.

Calculated Time Color
You can select the color in which you want the calculated time bar to appear.

DThe default value is the one shown.

Show Summary Bar in Red if Roll-up Time Equals Display Time
When you select this option, if the calculated cycle time is less than the specified time, the summary bar is red in color (instead of blue).

DThe default is that the check box is selected.

Display Logical Activities in Gantt

This option determines whether any defined logical activities are displayed in the GANTT viewer.

DThe default value is that the option is not selected.

On Opening Gantt order rows according

When you select PPR Tree, the Gantt chart opens with its rows sorted in the same order as the activities appear in the PPR tree.

When you select Begin times, all rows of the same sibling hierarchy inside the Gantt are sorted according their begin times. Child rows stay beneath their parents. In case several row objects have the same begin time, they are grouped together in the Gantt, and within the group, their ordering follows that of the the PPR tree. For the different types of Gantt charts, the effect of selecting Begin times is:

  • Process-centric  Gantt: The Gantt chart opens on an activity. This activity and its children are shown. No Resources are shown on their own rows.

  • Resource Utilization-centric Gantt:  The Gantt chart opens on a resource. This resource and all assigned activities of that resource are shown on their own rows

  • Manufacturing System-centric Gantt: The Gantt chart opens on a resource. This resource and all activities that are children (and grandchildren) of that resource are shown on their own rows

  • Process-centric Resource Gantt: - The Gantt chart opens on an activity. This activity and its children (and grandchildren) are shown; also all assigned resources are shown on their own rows

Limitations

  • When changing the begin time of a row object in an opened Gantt, there is no reordering.
  • When creating links between activities, their corresponding rows do not change their position.
  • When you insert an activity it is placed at the end of the sibling list of rows.
  • A multi-cycle Gantt always uses the begin times of the cycle 1 objects. 

Example of Sorted Gantt Rows

DThe default value is PPR Tree.

Text Alignment

You can choose to have the text within your columns in the Gantt chart centered, or left- or right-aligned.

DThe default value is Right.

Resource Gantt Options

 

Display Cycle Time Bars
Selecting the Display Cycle Time Bars check box enables you to display cycle time bars in the Gantt chart.

DThe default value is that the option is not enabled.

Cycle Time Bar Step Size in Seconds
If you select the Display cycle time bars check box, you can set the step size time of the the cycle time bar.  The cycle time bar in a Gantt chart can be changed according to the defined step size. For example, if the step size is set to 20 sec, the cycle time pf 80 sec can be changed only in increments of 20 sec. To decrease the time from 80 sec in Gantt the time goes first to 60 sec, then 40 sec. To increase the time from 80 sec in Gantt, the time goes first to 100 sec, and so on.

Here, for example, is a Gantt chart with the cycle time set to 80 sec (the vertical green line in the middle)
With the step size set to 20 sec, this cycle time can be decreased to 60 sec:
Or increased to 100 sec:

Stacked Display in Resource Gantt
When enabled, this option collapses all sequential activities corresponding to a single resource to one line in the resource-centric GANTT viewer. Activities are displayed as rectangular bars, with the width of the bar corresponding to the duration of the activity.

DThe default value is that the option is not enabled.

The time line shown in the Gantt chart is always based on calculated cycle times. This can cause the chart to appear out of sync in a Gantt that is based on specified times.