[R] Line Graph - Greater than 2 variables on plot

[hadley wickham]

Or with a little data manipulation, in ggplot2:

library(ggplot2)
qplot(D, value, data=melt(wag, m="D"), colour=variable, geom="line")


Hadley

On 9/21/07, Francisco J. Zagmutt <gerifalte28 at hotmail.com> wrote:
> You can also use the facilities in the lattice package.  Using Jim´s
> data names:
>
> require(lattice)
> xyplot(A+B+C~D, data=wag, type="l", auto.key=list(points = FALSE, lines
> = TRUE, space = "bottom"), ylab="value", main="Three variable plot")
>
> Regards,
>
> Francisco
>
>
> Jim Lemon wrote:
> > Wayne Aldo Gavioli wrote:
> >> Hello all,
> >>
> >> I was wondering if anyone knew how to construct a multiple line graph on R,
> >> where there are 2 (or more) sets of data points plotted against some x axis of
> >> data, and you can draw a line on the graph connecting each set of data points.
> >>
> >> For example:
> >>
> >> A               B              C          D
> >> 0.6566        2.1185        1.2320        5
> >> 0.647         2.0865        1.2325        10
> >> 0.6532        2.1060        1.2287        15
> >> 0.6487        2.1290        1.2313        20
> >> 0.6594        2.1285        1.2341        25
> >> 0.6577        2.1070        1.2343        30
> >> 0.6579        2.1345        1.2340        35
> >> 0.6734        2.1705        1.2362        40
> >> 0.675         2.1845        1.2372        45
> >> 0.6592        2.1550        1.2340        50
> >> 0.6647        2.1710        1.2305        55
> >>
> >>
> >>
> >> Would there be a way:
> >> a) To graph all the points of data in sets A, B and C as Y coordinates on one
> >> graph, using the points in set D as the X-axis/coordinates for all 3 sets (A, B
> >> and C)?
> >> b) To be able to draw 3 lines on the graph that connect each set of data (1 line
> >> connects all the A points, one line connects all the B points, one line connects
> >> all the C points)
> >>
> >>
> >> I couldn't find anything in the examples or the help section about multiple
> >> lines on the same graph, only one line.
> >>
> > Hi Wayne,
> >
> > Assume your data is in a data frame named "wag":
> >
> > plot(wag$D,wag$A,main="Three variable plot",xlab="D",ylab="Value",
> >   ylim=range(wag[c("A","B","C")]),type="l",col=2)
> > lines(wag$D,wag$B,type="l",pch=2,col=3)
> > lines(wag$D,wag$C,type="l",pch=3,col=4)
> > legend(25,1.9,c("A","B","C"),lty=1,col=2:4)
> >
> > Jim
> >
> > ______________________________________________
> > R-help at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


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