[R] Plotting monthly timeseries with an x-axis in "time format"

[vittorio]

You're right! It was kmail under kde to distort your message.
It works.
Thanks a lot
Vittorio
Il Monday 03 December 2007 22:34:48 Gabor Grothendieck ha scritto:
> Maybe your email software corrupted it somehow.  Often
> email software will cause weird line wrappings, for example.
> Or maybe you have an old version of R or zoo.  I am running zoo
> 1.4.0 and "R version 2.6.0 Patched (2007-10-08 r43124)"
>
> I just located my post in the archives
> https://stat.ethz.ch/pipermail/r-help/2007-December/147481.html
>
> and copied it from there pasting it into a fresh R session and
> it worked.
>
> On Dec 3, 2007 4:16 PM, vittorio <vdemart1 at tin.it> wrote:
> > Unfortunately something doesn't work:
> > > tab <- ts(cbind(A = c(79.47, 89.13, 84.86, 75.68, 72.82, 78.87, 93.46,
> >
> > + 78.18, 82.46, 77.25, 80.95, 84.39, 81.7, 74.76, 65.29, 60.3,
> > + 66.59, 73.19, 92.39, 65.76, 77.45, 74.22, 101.36, 100.01), B = c(77.95,
> > + 76.73, 51.2, 51.86, 51.29, 49.45, 53.88, 47.96, 55.07, 45.34,
> > + 37.07, 37.53, 47.79, 37.5, 30.35, 37.78, 34.13, 39.14, 39.89,
> > + 35.46, 36.54, 38.39, 47.33, 45.34)), start = c(2006, 1), freq = 12)
> >
> > > library(zoo)
> > > pnl.xaxis <- function(...) {
> >
> > + lines(...)
> > Error: unexpected input in:
> > "pnl.xaxis <- function(...) {
> > "
> >
> > What's wrong with it?
> > Ciao Vittorio
> >
> > Il Monday 03 December 2007 20:40:16 Gabor Grothendieck ha scritto:
> > > This can be done with plot.zoo and a panel function:
> > >
> > > tab <- ts(cbind(A = c(79.47, 89.13, 84.86, 75.68, 72.82, 78.87, 93.46,
> > > 78.18, 82.46, 77.25, 80.95, 84.39, 81.7, 74.76, 65.29, 60.3,
> > > 66.59, 73.19, 92.39, 65.76, 77.45, 74.22, 101.36, 100.01), B = c(77.95,
> > > 76.73, 51.2, 51.86, 51.29, 49.45, 53.88, 47.96, 55.07, 45.34,
> > > 37.07, 37.53, 47.79, 37.5, 30.35, 37.78, 34.13, 39.14, 39.89,
> > > 35.46, 36.54, 38.39, 47.33, 45.34)), start = c(2006, 1), freq = 12)
> > >
> > > library(zoo)
> > > pnl.xaxis <- function(...) {
> > >      lines(...)
> > >      panel.number <- parent.frame()$panel.number
> > >      nser <- parent.frame()$nser
> > >      # if bottom panel
> > >      if (!length(panel.number) || panel.number == nser) {
> > >            tt <- list(...)[[1]]
> > >            ym <- as.yearmon(tt)
> > >            mon <- as.numeric(format(ym, "%m"))
> > >            yy <- format(ym, "%y")
> > >            mm <- substring(month.abb[mon], 1, 1)
> > >            axis(1, tt[mon == 1], yy[mon == 1], cex.axis = 0.7)
> > >            axis(1, tt[mon > 1], mm[mon > 1], cex.axis = 0.5, tcl =
> > > -0.3) }
> > > }
> > > plot(as.zoo(tab), panel = pnl.xaxis, xaxt = "n")
> > >
> > > On Dec 3, 2007 12:11 PM, vittorio <vdemart1 at tin.it> wrote:
> > > > I have the following timeseries "tab"
> > > > =====================================
> > > >
> > > > > str(tab)
> > > >
> > > >  mts [1:23, 1:2] 79.5 89.1 84.9 75.7 72.8 ...
> > > >  - attr(*, "dimnames")=List of 2
> > > >  ..$ : NULL
> > > >  ..$ : chr [1:2] "Ipex...I" "Omel...E"
> > > >  - attr(*, "tsp")= num [1:3] 2006 2008   12
> > > >  - attr(*, "class")= chr [1:2] "mts" "ts"
> > > >
> > > > > tab
> > > >
> > > >         Ipex...I Omel...E
> > > > Jan 2006    79.47    77.95
> > > > Feb 2006    89.13    76.73
> > > > Mar 2006    84.86    51.20
> > > > Apr 2006    75.68    51.86
> > > > May 2006    72.82    51.29
> > > > Jun 2006    78.87    49.45
> > > > Jul 2006    93.46    53.88
> > > > Aug 2006    78.18    47.96
> > > > Sep 2006    82.46    55.07
> > > > Oct 2006    77.25    45.34
> > > > Nov 2006    80.95    37.07
> > > > Dec 2006    84.39    37.53
> > > > Jan 2007    81.70    47.79
> > > > Feb 2007    74.76    37.50
> > > > Mar 2007    65.29    30.35
> > > > Apr 2007    60.30    37.78
> > > > May 2007    66.59    34.13
> > > > Jun 2007    73.19    39.14
> > > > Jul 2007    92.39    39.89
> > > > Aug 2007    65.76    35.46
> > > > Sep 2007    77.45    36.54
> > > > Oct 2007    74.22    38.39
> > > > Nov 2007   101.36    47.33
> > > > Dec 2007   100.01  45.34
> > > > ===============================
> > > >
> > > > Plotting tab with a simple "plot(tab,plot.type="single")" I'm
> > > > obtaining a graph  with the x axis in an orrible decimal format so
> > > > that,e.g., Jan 2006 is 2006.0 and Nov 2006 is 2006.8(33)!
> > > >
> > > >  Instead I would like to see the x-axis in a more human-readable
> > > > format, for instance, 12 tics for each year and a label at the
> > > > beginning of each quarter of the year: 2006.1, 2006.4,2006.7.
> > > >  - OR -
> > > > more elegantly, I would like to have the 12 tics with the month
> > > > shortened labels: Jan, Feb, etc. and below, say June, one label for
> > > > the year.
> > > >
> > > > Please help.
> > > >
> > > > Ciao
> > > > Vittorio
> > > >