[R] plot two graphs with different length of data

[Eric Hu]

thank you, Joerg. I am able to use points() to add the new data in the
current plot.

Eric

On 6/13/06, Joerg van den Hoff <j.van_den_hoff at fz-rossendorf.de> 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.
> >
> > Eric
> >
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>
> matplot(cbind(x1,x2), cbind(y1,y2)) might be what you want.
>
> (if x1, x2 and y1,y2 are of equal length. otherwise pad the short  ones
> with NAs or use  `matplot' with type =n (to get the scaling of the plot
> right), followed by `plot(x1,y1), lines(x2,y2)')
>