List,

I am using the 'tisPlot' function in Jeff Hallman's excellent tis package 
and was hoping that someone could spare me from having to dig into the 
code of his 'tisPlot' function.  So far as I can tell, the preferred 
method of controlling the plotting of the x-axis is using the 'xTickFreq' 
and 'xTickSkip' options.  Unfortunately, the where the data ends up on the 
resultant plot is not invariant to this choice, as indicated in the 
documentation of the 'xTickFreq' option.  Has anyone adjusted the 
frequency of their x-axis label using this package before?  I imagine that 
there must be a better way of doing what I am trying to accomplish, but if 
not, does anyone have a suggestion on how to work around this without 
digging into the function itself?

## an example

library(tis)

strt <- ti(20000101, "monthly")
dat  <- tis(runif(9*12 - 1), start=strt) # ends in 11/2008

par(mfrow=c(2,1))
tisPlot(dat, xTickFreq="monthly", xTickSkip=6) # graph ends in 11/2008, 
but looks to start some time in late 1999
tisPlot(dat, xTickFreq="monthly", xTickSkip=12) # graph looks to end 
around 3/2009

## end

TIA,

Kyle

___________________________________________
Research Associate, Macroeconomics
Federal Reserve Bank of San Francisco

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