addProbability: Add a Pure Probability
In ftree: Fault Trees and Event Trees for Risk and Reliability Analysis

Description Usage Arguments Value References Examples

Modifies an existing fault tree with the addition of a pure probability.

1	addProbability(DF, at, prob, name="", description="")

`DF`	A fault tree dataframe such as returned from ftree.make or related add... functions.
`at`	The ID of the parent node for this addition.
`prob`	A probability value >0 && <1
`name`	A short identifying string
`description`	An optional string providing more detail for this probability.

Returns the input fault tree dataframe appended with an entry row for the defined probability.

Nicholls, David [Editor] (2005) System Reliability Toolkit Reliability information Analysis Center

O'Connor, Patrick D.T. (1991) Practical Reliability Engineering John Wiley & Sons

Vesely, W.E., Goldberg, F.F., Roberts, N.H., Haasl, D.F. (1981) Fault Tree Handbook U.S. Nuclear Regulatory Commission

Vesely, W.E., Stamatelato, M., Dugan, J., Fragola, J., Minarick, J., Railsback, J. (2002) Fault Tree Handbook with Aerospace Applications NASA

Doelp, L.C., Lee, G.K., Linney, R.E., Ormsby R.W. (1984) Quantitative fault tree analysis: Gate-by-gate method Plant/Operations Progress Volume 3, Issue 4 American Institute of Chemical Engineers

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mytree <-ftree.make(type="and", name="common cause failure of redundant pumps")
mytree<-addActive(mytree,at=1,mttf=3,mttr=12/8760, name="Pump")
mytree <- addProbability(mytree,  at=1, prob=.05, name="common cause beta factor")