[R] plot two graphs with different length of data

[Eric Hu]

Thanks Jim. This seems to work for my case already.

Eric

On 6/13/06, Jim Lemon <jim at bitwrit.com.au> wrote:
> Eric Hu wrote:
> > Hi I am trying to plot two data set in the same picture window without
> > overlapping with each other. I am using the format plot(x1,y1,x2,y2)
> > but get the following error message:
> >
> >
> >>plot(as.numeric(r0[,4]),as.numeric(r0[,7]),as.numeric(r0[,4]),as.numeric(r0[,7][ind[,1]]))
> >
> > Error in plot.window(xlim, ylim, log, asp, ...) :
> >         invalid 'ylim' value
> >
> > Can anyone tell me what went wrong? Thanks.
>
> plot is probably interpreting one of your data vectors as the ylim
> argument. If you want to plot multiple data series of different lengths,
> it is probably simplest to use points() (or lines()) after plotting the
> first one. For an example of this, see:
>
> http://cran.r-project.org/doc/contrib/Lemon-kickstart/kr_addat.html
>
> Jim
>