Thankyou very much rui.i was trying the following command but i was
unsuccessful in implementing the secondary axis.
> library(lattice)> df <- data.frame(x = x, y = y, z= z)> >
> xyplot(x~y,data=df,groups=z,+
> par.settings=list(superpose.symbol=list(pch=1:4,+
> col='black')))
By the way, is there a way that instead of making a separate secondary axis, we
could put a small classification number on the top of every symbol?? Thankyou
very much for helping me out....
Elisa
> Date: Mon, 11 Mar 2013 21:33:33 +0000
> From: ruipbarra...@sapo.pt
> To: eliza_bo...@hotmail.com
> CC: r-help@r-project.org
> Subject: Re: [R] plot pch
>
> Hello,
>
> Try the following.
>
> dat <-
> structure(list(x = c(52.5211966906669, 49.8818953734405, 45.176643179385,
> 52.2988909042952, 46.1007828702965, 53.4910266471472, 49.013651970548,
> 55.1218462810432, 56.922347550005, 50.7531277271902), y =
> c(23.953008533893,
> 45.1590889001506, 62.5358474328017, 39.4861634272874, 49.3108455233261,
> 46.0010163238786, 46.5779093951996, 37.4552698003145, 46.4057156535496,
> 56.667549695452), z = c(1, 4, 1, 2, 1, 3, 4, 2, 1, 3), r = 1:10), .Names
> = c("x",
> "y", "z", "r"), row.names = c(NA, -10L), class = "data.frame")
>
> ch <- c(2, 22, 5, 1, 4) # triangle, rectangle, rhombus, circle, cross.
> plot(dat$x, dat$y, pch = ch[dat$z])
> axis(4, at = dat$y, labels = seq_along(dat$y)[order(dat$y)])
>
>
> Also, if you want to see the pch characters, run without worrying about
> the warnings (in general a bad tip, not really important here)
>
> plot(1, type = "n", xlim=c(0, 17), ylim=c(0, 17))
> for(x in 1:16) for(y in 1:16)
> points(x, y, pch = (x - 1)*16 + y)
>
>
> They go first column with x = 1, from y = 1 to 16, etc.
>
>
> Hope this helps,
>
> Rui Barradas
>
> Em 11-03-2013 17:43, eliza botto escreveu:
> >
> > Dear xpeRts,
> >
> > I would like to ask a question about plotting in R.
> > I have four columns in which first column contains x-coordinate and second
> > column contains y-coordinate of certain points, whereas the third column
> > "z" contains classification number of those points from 1 to 4, it should
> > be noted that this column doesn't quantify anything, but just classify the
> > points. More precisely like the following
> >
> >
> >> dput(v)
> >
> >
> > structure(list(x = c(52.5211966906669, 49.8818953734405, 45.176643179385,
> > 52.2988909042952, 46.1007828702965, 53.4910266471472, 49.013651970548,
> > 55.1218462810432, 56.922347550005, 50.7531277271902), y = c(23.953008533893,
> > 45.1590889001506, 62.5358474328017, 39.4861634272874, 49.3108455233261,
> > 46.0010163238786, 46.5779093951996, 37.4552698003145, 46.4057156535496,
> > 56.667549695452), z = c(1, 4, 1, 2, 1, 3, 4, 2, 1, 3), r = 1:10), .Names =
> > c("x",
> > "y", "z", "r"), row.names = c(NA, -10L), class = "data.frame")
> >
> >
> > What i want to do is to locate, in the space of "x" and "y", each point (in
> > classified section) with different shape for each classified section range
> > from 1 to 4, by command "pch".
> > There should also be a y-axis on the right end of x-axis (secondary axis),
> > which carries the the point number as in column "r". As there are ten
> > points so that axis should range to 10 for the presentation of each point
> > number. More precisely, z=1 should be located at a point where x=52.52120,
> > y=23.95301 and r=1.
> > where,
> > x= x-axis
> >
> > y=y-axis on the left end of x-axis
> >
> > r=y-axis on the right end of x-axis (secondary axis)
> >
> > For points belonging to classification 1 there should be a triangle
> > For points belonging to classification 2 there should be a rectangle
> > and so on...
> > in my orinigal data i have 5 classifications.
> >
> > i hope i was clear, but in case i my wording is confusing, kindly let me
> > know.
> >
> > Elisa
> >
> > [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@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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