The GANTT Procedure
- Overview
- Getting Started
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Syntax
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DetailsSchedule Data SetMissing Values in Input Data SetsSpecifying the PADDING= OptionPage FormatMultiple Calendars and HolidaysFull-Screen VersionGraphics VersionSpecifying the Logic OptionsAutomatic Text AnnotationWeb-Enabled Gantt ChartsMode-Specific DifferencesDisplayed OutputMacro Variable _ORGANTTComputer Resource RequirementsODS Style Templates
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ExamplesLine-Printer ExamplesPrinting a Gantt ChartCustomizing the Gantt ChartGraphics ExamplesMarking HolidaysMarking Milestones and Special DatesUsing the COMPRESS OptionUsing the MININTERVAL= and SCALE= OptionsUsing the MINDATE= and MAXDATE= OptionsVariable-Length HolidaysMultiple CalendarsPlotting the Actual ScheduleComparing Progress Against a Baseline ScheduleUsing the COMBINE OptionPlotting the Resource-Constrained ScheduleSpecifying the Schedule Data DirectlyBY ProcessingGantt Charts by PersonsUsing the HEIGHT= and HTOFF= OptionsDrawing a Logic Gantt Chart Using AON RepresentationSpecifying the Logic Control OptionsNonstandard Precedence RelationshipsUsing the SAS/GRAPH ANNOTATE= OptionUsing the Automatic Text Annotation FeatureMultiproject Gantt ChartsMultisegment Gantt ChartsZoned Gantt ChartsWeb-Enabled Gantt ChartsUsing the CHARTWIDTH= OptionUsing the TIMEAXISFORMAT= OptionStatement and Option Cross-Reference Tables
- References
Specifying the PADDING= Option
As explained in the section Schedule Data Set, the finish times in the Schedule data set denote the final time unit of an activity’s duration; that is, the activity finishes
at the end of the day/second specified as the finish time. A plot of the activity’s duration should continue through the end
of the final time unit. Thus, if the value of the E_FINISH variable is '4JUN04', the early finish time for the activity is plotted at the end of June 4, 2004 (or the beginning of June
5, 2004).
In other words, the finish times are padded by a day (second) if the finish time variables are formatted as SAS date (SAS time or datetime) values. This treatment is consistent with the meaning of the variables as output by PROC CPM. Default values of PADDING corresponding to different format types are shown in Table 8.3.
The PADDING= option is provided to override the default padding explained above. Valid values of this option are NONE, SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QTR, YEAR, DTSECOND, DTMINUTE, DTHOUR, DTWEEK, DTMONTH, DTQTR, and DTYEAR. Use the value NONE if you do not want the finish times to be adjusted.
Table 8.3: Default Values of the PADDING= Option Corresponding to Format Type
|
Format |
PADDING |
|
SAS time value |
SECOND |
|
SAS date value |
DAY |
|
SAS datetime value |
DTSECOND |
|
Other |
NONE |
It is recommended that when plotting zero duration activities, you include a variable in the Schedule data set that has value zero if and only if the activity has zero duration. Defining this variable to the GANTT procedure using the DURATION= (or DUR=) option in the CHART statement ensures that a zero duration activity is represented on the chart by a Milestone. If this is not done, an activity with zero duration is shown on the chart as having a positive duration since finish times are padded to show the end of the last time unit.