The CPM Procedure
- Overview
- Getting Started
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Syntax
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DetailsScheduling Subject to Precedence ConstraintsUsing the INTERVAL= OptionNonstandard Precedence RelationshipsTime-Constrained SchedulingFinish MilestonesOUT= Schedule Data SetMultiple CalendarsBaseline and Target SchedulesProgress UpdatingResource-Driven Durations and Resource CalendarsResource Usage and AllocationRESOURCEOUT= Usage Data SetRESOURCESCHED= Resource Schedule Data SetMultiproject SchedulingMacro Variable _ORCPM_Input Data Sets and Related VariablesMissing Values in Input Data SetsFORMAT SpecificationComputer Resource Requirements
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ExamplesActivity-on-Node RepresentationActivity-on-Arc RepresentationMeeting Project DeadlinesDisplaying the Schedule on a CalendarPrecedence Gantt ChartChanging Duration UnitsControlling the Project CalendarScheduling around HolidaysCALEDATA and WORKDATA Data SetsMultiple CalendarsNonstandard RelationshipsActivity Time ConstraintsProgress Update and Target SchedulesSummarizing Resource UtilizationResource AllocationUsing Supplementary ResourcesINFEASDIAGNOSTIC Option and Aggregate Resource TypeVariable Activity DelayActivity SplittingAlternate ResourcesPERT Assumptions and CalculationsScheduling Course - Teacher CombinationsMultiproject SchedulingResource-Driven Durations and Resource CalendarsResource-Driven Durations and Alternate ResourcesMultiple Alternate ResourcesAuxiliary Resources and Alternate ResourcesUse of the SETFINISHMILESTONE OptionNegative Resource RequirementsAuxiliary Resources and Negative RequirementsResource-Driven Durations and Negative RequirementsStatement and Option Cross-Reference Tables
- References
ALIGNDATE variable ;
DATE variable ;
ADATE variable ;
The ALIGNDATE statement identifies the variable in the Activity data set that specifies the dates to be used to constrain each activity to start or finish on a particular date. The ALIGNDATE statement is used in conjunction with the ALIGNTYPE statement, which specifies the type of alignment. A missing value for the variables specified in the ALIGNDATE statement indicates that the particular activity has no restriction imposed on it.
PROC CPM requires that if the ALIGNDATE statement is used, then all start activities (activities with no predecessors) have nonmissing values for the ALIGNDATE variable. If any start activity has a missing ALIGNDATE value, it is assumed to start on the date specified in the PROC CPM statement (if such a date is given) or, if no date is given, on the earliest specified start date of all start activities. If none of the start activities has a start date specified and a project start date is not specified in the PROC CPM statement, the procedure stops execution and returns an error message. See the section Time-Constrained Scheduling for information about how the variables specified in the ALIGNDATE and ALIGNTYPE statements affect the schedule of the project.