ProjectManagement (version 1.5.2)

early.time: 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)

Value

Early time vector.

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.

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)