bcp (version 2.1.2)

RealInt: US Ex-post Real Interest Rate data, 1961(1):1986(3)

Description

US ex-post real interest rate: the three-month treasury bill deflated by the CPI inflation rate.

Usage

data("RealInt")

format

A quarterly time series from 1961(1) to 1986(3).

source

The data is available online in the data archive of the Journal of Applied Econometrics. url: http://qed.econ.queensu.ca/jae/2003-v18.1/bai-perron/.

References

Bai J., Perron P. (2003), Computation and Analysis of Multiple Structural Change Models, Journal of Applied Econometrics, 18, 1-22. url: http://qed.econ.queensu.ca/jae/2003-v18.1/bai-perron/.

Achim Zeileis, Friedrich Leisch, Bruce Hansen, Kurt Hornik, Christian Kleiber (2006), The strucchange Package, version 1.3-1, CRAN: The Comprehensive R Network.

Examples

##### RealInt #####
  data("RealInt")
  bcp.ri <- bcp(as.vector(RealInt))
  plot.bcp(bcp.ri)
  
  # to see bcp and Bai and Perron results run:
  if(require("strucchange")) {
  bp <- breakpoints(RealInt ~ 1, h = 2)$breakpoints
  rho <- rep(0, length(RealInt))
  rho[bp] <- 1
  b.num<-1 + c(0,cumsum(rho[1:(length(rho)-1)]))
  bp.mean <- unlist(lapply(split(RealInt,b.num),mean))
  bp.ri <- rep(0,length(RealInt))
  for(i in 1:length(bp.ri)) bp.ri[i] <- bp.mean[b.num[i]]
  xax <- seq(1961, 1987, length=103)
  op<-par(mfrow=c(2,1),col.lab="black",col.main="black")
  op2 <- par(mar=c(0,4,4,2),xaxt="n", cex.axis=0.75)
  plot(1:length(bcp.ri$data), bcp.ri$data, col="grey", pch=20, xlab="", ylab="Posterior Mean", main="U.S. Ex-Post Interest Rate")
  lines(bcp.ri$posterior.mean, lwd=2)
  lines(bp.ri, col="blue")
  par(op2)
  op3 <- par(mar=c(5,4,0,2), xaxt="s", cex.axis=0.75)
  plot(xax, bcp.ri$posterior.prob, yaxt="n", type="l", ylim=c(0,1), xlab="Year", ylab="Posterior Probability", main="")
  for(i in 1:length(bp.ri)) abline(v=xax[bp[i]], col="blue")
  axis(2, yaxp=c(0, 0.9, 3))
  par(op3)
  par(op)
  } else {
    cat("strucchange is not loaded")
  }