Your files do not have data appropriate to your commands. Since you
did not provide the data (see last line of every message to r-help)
there is not much more that can be said.
On Sat, Sep 26, 2009 at 4:24 AM, e-letter <inp...@gmail.com> wrote:
> I created separate text files for the 2 data sets. I enter the
> following comands:
>
> library(zoo)
> library(chron)
> z1<-read.zoo(textConnection("/path/to/test1.txt"),header=FALSE,sep=",",FUN=times)
> z2<-read.zoo(textConnection("/path/to/test2.txt"),header=FALSE,sep=",",FUN=times)
> z3<-window(na.approx(merge(z1,z2)),time(z1))
> plot(z3$z1,z3$z2)
> Error in plot.window(xlim, ylim, log, asp, ...) :
> need finite 'xlim' values
> In addition: Warning messages:
> 1: no non-missing arguments to min; returning Inf in: min(x)
> 2: no non-missing arguments to max; returning -Inf in: max(x)
> 3: no non-missing arguments to min; returning Inf in: min(x)
> 4: no non-missing arguments to max; returning -Inf in: max(x)
>
> The resultant graph window was blank, so I entered the following command
>
> plot(z3$z1,z3$z2,xlim=c(0,100),ylim=c(0,100))
>
> The graph window showed y axis (labelled 'z3$z1') and x axis (labelled
> 'Index').
>
> I do not understand the instruction "...to use window to pick off..."
>
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