Dear R People:
Hello again. I'm trying to have 3 graphics windows visible
simultaneously. I set up a zoo series.
Then I plot the original series. I use the locator function to select
2 values from the original series, which generates a subset of the
original series.
Next, I plot the subset.
The last step is to produce an EWMA chart from the subset series.
Fair enough. I've tried all sort of things, but can only have 2
graphics windows open with "stuff" in them. If I go into the blank
window and maximize it, then it appears. But other than that, it does
not.
> xdate <- seq(as.Date("1998-01-01"),as.Date("2010-06-30"),by="day")
> length(xdate)
[1] 4564
> xt <- zoo(rnorm(4564),order=xdate)
> #Here is the function itself:
> eplot
function (x)
{
require(zoo)
require(qcc)
windows()
plot(x)
z <- locator(2,type="l",col="red")
windows()
plot(window(x, start = min(z$x), end = max(z$x)))
windows()
ewma(window(x, start = min(z$x), end = max(z$x)))
dev.set(3)
plot(window(x, start = min(z$x), end = max(z$x)))
}
> sessionInfo()
R version 2.11.1 (2010-05-31)
i386-pc-mingw32
locale:
[1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United
States.1252 LC_MONETARY=English_United States.1252 LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] qcc_2.0.1 zoo_1.6-3 proto_0.3-8
loaded via a namespace (and not attached):
[1] dynlm_0.2-3 grid_2.11.1 lattice_0.18-8
strucchange_1.4-0 tcltk_2.11.1 tools_2.11.1 traitr_0.7
>
Any help would be much appreciated.
Thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodg...@gmail.com
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