[R] Plotting a graph of many lines between groups of points...
jfkincaidsu at netscape.net
Tue Jul 15 22:30:05 CEST 2003
johnson.2060 at osu.edu wrote:
> 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
is this stored as a data.frame? a matrix? In any case there seems to be
a problem with your indexing ...
> 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.
indexing is ok if you have df$v3[i] ....
> 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)
could you send the actual code for your plot? Perhaps some way to
construct the data. at this point things are a bit murky.
> Do I need to turn these into vectors before plotting them?
Thus my question about how the data are stored...
> Any help would be greatly appreciated.
> R-help at stat.math.ethz.ch mailing list
Joel F. Kincaid, Ph. D.
Department of Economics and Finance
Franklin P. Perdue School of Business
Salisbury Maryland, 21801
Phone: (410) 548-4416
Email: jfkincaid at salisbury.edu
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