Enhancements to the Resource Data Set

The CPM Procedure

Enhancements to the Resource Data Set

Recall that the RESOURCEIN data set (referred to as the Resource data set) contains all of the necessary information about the resources that are to be used by PROC CPM to schedule the project. Typically, the Resource data set contains the resource variables (numeric), a type identifier variable (character) that identifies the type of information in each observation, a period variable (numeric and usually a SAS time, date, or datetime variable), and a RESID variable that is used to specify alternate resources.

The value of the type identifier variable in each observation tells CPM how to interpret that observation. Valid values for this variable are RESLEVEL, RESTYPE, RESPRTY, SUPLEVEL, ALTPRTY, ALTRATE, RESRCDUR, CALENDAR, MULTALT, MINARATE, and AUXRES. The last three keywords are new in Release 8.1 and are interpreted as described below.

If the value of the type identifier variable is MULTALT, that observation indicates which resources can have multiple alternate resources. The value 1 for a resource variable in the observation indicates that multiple alternates are allowed for that resource, and a value 0 indicates that multiple alternates are not allowed. See the "Specifying Multiple Alternates" section for details.

If the value of the type identifier variable is MINARATE, that observation indicates the minimum rate of substitution for each resource, whenever multiple alternates are used. Note that the MINARATE values specified in this observation are used only if the MULTIPLEALTERNATES option is specified or if the Resource data set has an observation with the type identifier value of MULTALT.

If the type identifier variable is specified as AUXRES, the Resource data set must also have a RESID variable identifying the resource for which the current observation lists the required auxiliary resources. See the "Auxiliary Resources" section for details.

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