[R] question about the tisPlot function in package tis

[Gabor Grothendieck]

Sorry that should have been:
library(zoo)
z <- as.zoo(dat, class = "yearmon")
plot(z)
xyplot(z)


On Tue, Dec 2, 2008 at 2:35 PM, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
> The development version of zoo has a tis to zoo conversion function
> that would allow you to plot your data using plot.zoo and xplot.zoo
> in which case you can use classic graphics axis function (for plot.zoo)
> or lattice facilities (with xyplot.zoo):
>
> source("http://r-forge.r-project.org/plugins/scmsvn/viewcvs.php/*checkout*/pkg/R/as.zoo.tis.R?rev=524&root=zoo")
> z <- as.zoo(dat, class = "yearmon")
> plot(dat)
> xyplot(dat)
>
> There are many examples at ?plot.zoo and ?xyplot.zoo and
> in the three zoo vignettes.
>
> On Tue, Dec 2, 2008 at 1:49 PM,  <Kyle.Matoba at sf.frb.org> wrote:
>> 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
>>
>>        [[alternative HTML version deleted]]
>>
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>