The CPM Procedure

Missing Values in Input Data Sets

The following table summarizes the treatment of missing values for variables in the input data sets used by PROC CPM.

Table 2.26: Treatment of Missing Values in the CPM Procedure

Data Set	Variable	Value Used / Assumption Made /
		Action Taken
CALEDATA	CALID	default calendar (0 or DEFAULT)
	D_LENGTH	DAYLENGTH, if available.
		8:00, if INTERVAL = WORKDAY, DTWRKDAY
		24:00, otherwise
	_SUN_	corresponding shift for default
	...	calendar
	_SAT_
DATA	ACTIVITY	input error: procedure stops with error message
	ACTDELAY	DELAY= specification
	ACTPRTY	infinity (indicates lowest priority)
	ALIGNDATE	project start date for start activity
	ALIGNTYPE	SGE: if ALIGNDATE is not missing
	A_FINISH	see the section "Progress Updating" for details
	A_START	see the section "Progress Updating" for details
	B_FINISH	updated if UPDATE= option is on
	B_START	updated if UPDATE= option is on
	CALID	default calendar (0 or DEFAULT)
	DURATION	input error: procedure stops with error message
	FINISH	value ignored
	HEADNODE	input error: procedure stops with error message
	ID	missing
	LAG	FS_0: if corresponding successor
		variable value is not missing
	MAXNSEGMT	calculated from MINSEGMTDUR
	MINSEGMTDUR	0.2 * DURATION
	PCTCOMP	see the section "Progress Updating" for details
	PROJECT	activity is at highest level
	REMDUR	see the section "Progress Updating" for details
	RESOURCE	0
	START	value ignored
	SUCCESSOR	value ignored
	TAILNODE	input error: procedure stops with error message
	WORK	resources use fixed duration
HOLIDATA	CALID	holiday applies to all calendars defined
	HOLIDAY	observation ignored
	HOLIDUR	ignored if HOLIFIN is not missing;
		1, otherwise
	HOLIFIN	ignored if HOLIDUR is not missing;
		HOLIDAY (1 unit of INTERVAL), otherwise
RESOURCEIN	OBSTYPE	RESLEVEL
	PERIOD	input error if OBSTYPE is RESLEVEL,
		otherwise ignored
	RESID	observation ignored
	RESOURCE	1.0, if OBSTYPE is RESTYPE
		infinity, if OBSTYPE is RESPRTY
		0.0, if OBSTYPE is RESUSAGE
		0.0, if OBSTYPE is SUPLEVEL
		0.0, if OBSTYPE is RESLEVEL and this
		is the first observation of this type
		otherwise, equal to value in previous
		observation
WORKDATA	any numeric	00:00, if first observation
	variable	24:00, otherwise