SmithWilsonYieldCurve (version 1.1.1)

SmithWilsonYieldCurve-package: Fit yield curves using the Smith-Wilson method

Description

A package to fit yield curves using the Smith-Wilson method

Author

Phil Joubert

Details

The main function exposed in this package is fFitSmithWilsonYieldCurve, which takes market data in the form of a vector of cashflow times, a matrix of cashflows and a vector of market prices. It returns an object of class "SmithWilsonYieldCurve".

A convenience function fFitSmithWilsonYieldCurveToInstruments takes a dataframe containing market instrument data as type, tenor, frequency and rate. It extracts the required vectors and matrices and then calls fFitSmithWilsonYieldCurve.

Objects of class SmithWilsonYieldCurve are a list, the first element of which is a function P(t), which returns the zero coupon bond price of the fitted curve at time t.

References

Smith A. and Wilson, T. - "Fitting Yield curves with long Term Constraints" (2001)

Examples

dfInstruments <- data.frame(c("SWAP", "SWAP"), c(1,10), c(1,1), c(0.025, 0.05))
	colnames( dfInstruments ) <- c( "Type", "Tenor", "Frequency", "Rate" )
	Curve <- fFitSmithWilsonYieldCurveToInstruments( dfInstruments, 0.04, 0.1 )
	plot( Curve )