# Re: [R] Combining several mappings in ggplot2

From: Tribo Laboy <tribolaboy_at_gmail.com>
Date: Wed, 26 Mar 2008 16:41:38 +0000

Hi Thierry

Thanks for replying. I tried your code, but it spit an error on me:

> Orange2 <- data.frame(Tree = as.factor(Tree_v), age = age_v,
+ circumference = circumference_v, Lines = factor(as.numeric(Orange2\$Tree) + %% 4)) Error: unexpected SPECIAL in:
"Orange2 <- data.frame(Tree = as.factor(Tree_v), age = age_v, circumference = circumference_v, Lines = factor(as.numeric(Orange2\$Tree) + %%"

Am I typing it correctly? What does the %% 4 or %%5 mean by the way?

Regards,

TL

On Wed, Mar 26, 2008 at 11:26 AM, ONKELINX, Thierry <Thierry.ONKELINX_at_inbo.be> wrote:
> Tribo,
>
> It looks like geom_line() accepts only 4 linetypes and you asked for 5.
>
> library(ggplot2)
>
> Tree_v <- rep(c(1:5),each = 5)
> age_v <- rep(seq(1,25, by = 5),5) + 10*runif(25)
> circumference_v <- rep(seq(21,45, by = 5), 5)*Tree_v + 25*runif(25)
>
> #This will work
>
> Orange2 <- data.frame(Tree = as.factor(Tree_v), age = age_v,
> circumference = circumference_v, Lines = factor(as.numeric(Orange2\$Tree)
> %% 4))
> ggplot(data = Orange2, aes(x = age, y = circumference, color = Tree,
> linetype = Lines)) + geom_line()
>
> #This won't
>
> Orange2 <- data.frame(Tree = as.factor(Tree_v), age = age_v,
> circumference = circumference_v, Lines = factor(as.numeric(Orange2\$Tree)
> %% 5))
>
> ggplot(data = Orange2, aes(x = age, y = circumference, color = Tree,
> linetype = Lines)) + geom_line()
>
> HTH,
>
> Thierry
>
> ------------------------------------------------------------------------
> ----
> ir. Thierry Onkelinx
> Instituut voor natuur- en bosonderzoek / Research Institute for Nature
> and Forest
> Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
> methodology and quality assurance
> Gaverstraat 4
> 9500 Geraardsbergen
> Belgium
> tel. + 32 54/436 185
> Thierry.Onkelinx_at_inbo.be
> www.inbo.be
>
> To call in the statistician after the experiment is done may be no more
> than asking him to perform a post-mortem examination: he may be able to
> say what the experiment died of.
> ~ Sir Ronald Aylmer Fisher
>
> The plural of anecdote is not data.
> ~ Roger Brinner
>
> The combination of some data and an aching desire for an answer does not
> ensure that a reasonable answer can be extracted from a given body of
> data.
> ~ John Tukey
>
> -----Oorspronkelijk bericht-----
> Van: r-help-bounces_at_r-project.org [mailto:r-help-bounces_at_r-project.org]
> Namens Tribo Laboy
> Verzonden: woensdag 26 maart 2008 12:01
> CC: r-help_at_r-project.org
> Onderwerp: Re: [R] Combining several mappings in ggplot2
>
>
>
> Apologies! I though that the Orange dataset comes with R, but it is in
> fact in the package "datasets".
>
> So here's another "Orange2" dataset for the example:
>
> Tree_v = rep(c(1:5),each = 5)
> age_v = rep(seq(1,25, by = 5),5) + 10*runif(25)
> circumference_v <- rep(seq(21,45, by = 5), 5)*Tree_v + 25*runif(25)
> Orange2 <- data.frame(Tree = as.factor(Tree_v), age = age_v,
> circumference = circumference_v)
>
>
> This works fine:
>
> ggplot(data = Orange2, aes(x = age, y = circumference, color = Tree))
> + geom_line()
>
> These generate errors (included):
>
> > ggplot(data = Orange2, aes(x = age, y = circumference, color = Tree,
> linetype = Tree)) + geom_line()
> Error in get("check_domain", env = ., inherits = TRUE)(., ...) :
> Too many values in domain (5 > 4)
>
>
> > ggplot(data = Orange2, aes(x = age, y = circumference, color = Tree))
> + geom_line() + scale_linetype_manual(value = c(1:5))
> Error in unit(values, units, data = data) :
> 'x' and 'units' must have length > 0
>
>
> What am I doing wrong?
>
>
> Regards,
>
> TL
>
>
>
> On Wed, Mar 26, 2008 at 2:08 AM, hadley wickham <h.wickham_at_gmail.com>
> wrote:
> > On Tue, Mar 25, 2008 at 11:48 AM, Tribo Laboy <tribolaboy_at_gmail.com>
> wrote:
> > > Hello,
> > >
> > > I want to be able to make a plot that has several series with
> > > different color and linetype.
> > > Online documentation suggest that this is possible, but I haven't
> found how:
> > >
> > > "We can also create redundant mappings, mapping the same variable
> to
> > > multiple aesthetics. This is most useful when producing a graphic
> for
> > > both colour and black and white display."
> > >
> > > Here's what I have to get the color
> > > ggplot(data = Orange, aes(x = age, y = circumference, color =
> Tree)) +
> > > geom_line()
> > >
> > > if i try this I get an error:
> > > ggplot(data = Orange, aes(x = age, y = circumference, color =
> Tree,
> > > linetype = Tree)) + geom_line()
> >
> > Please provide a reproducible example (or at least describe the
> >
> >
> >
> > --
> >
>
> ______________________________________________
> R-help_at_r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help