[R] Plotting a graph of many lines between groups of points.. .
Liaw, Andy
andy_liaw at merck.com
Tue Jul 15 22:46:19 CEST 2003
> From: Andrew Johnson [mailto:johnson.2060 at osu.edu]
>
> I have a data file read into a data frame.
>
> For example,
>
> V1 V2 V3 V4
> 1 1 1 3 4
> 2 2 3 5 10
> . . . . .
> . . . . .
> n V1[n] V2[n] V3[n] V4[n]
>
> to n=many thousand
>
> I want to plot a graph with many line segments, where
> v1[i]=x1, v2[i]=y1,
> v3[i]=x2, v4[i]=y2 for i=1,n.
>
> This seems relatively simple in theory but I've spent quite a
> bit of time
> trying to make it happen with plot(type=), points(x,y), or
> lines(x,y) to no
> avail.
>
> Do I need to turn these into vectors before plotting them?
See if matplot(mydata[,c(1,3)], mydata[,c(2,4)]) does what you want. If so,
check the help page for matplot for other options.
HTH,
Andy
> Any help would be greatly appreciated.
>
> Thanks,
> Andrew
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo> /r-help
>
------------------------------------------------------------------------------
Notice: This e-mail message, together with any attachments, ...{{dropped}}
More information about the R-help
mailing list