early.time {ProjectManagement}

Early time for a deterministic projects

Description

This function calculates the early time for one project.

Usage

early.time(prec1and2 = matrix(0), prec3and4 = matrix(0), duration)

Arguments

prec1and2

A matrix indicating the order of precedence type 1 and 2 between the activities (Default=matrix(0)). If value (i,j)=1 then activity i precedes type 1 to j, and if (i,j)=2 then activity i precedes type 2 to j. Cycles cannot exist in a project, i.e. if an activity i precedes j then j cannot precede i.

prec3and4

A matrix indicating the order of precedence type 3 and 4 between the activities (Default=matrix(0)). If value (i,j)=3 then activity i precedes type 3 to j, and if (i,j)=4 then activity i precedes type 4 to j. Cycles cannot exist in a project, i.e. if an activity i precedes j then j cannot precede i.

duration

vector with the duración for each activities.

Value

Early time vector.

References

burke

Burke, R. (2013). Project management: planning and control techniques. New Jersey, USA.

Examples

prec1and2<-matrix(c(0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0),nrow=5,ncol=5,byrow=TRUE)
duration<-c(3,2,1,1.5,4.2)
early.time(prec1and2,duration=duration)