R help - Aug 2010 - Help making box plots in R when the x axis is a quantitative variable

Hello

I'm trying to make boxplots 

However I'm having issues because my x axis is distance downstream on a
river. The boxplots function in r assumes the x axis are categorical
variables but I would like my boxplots to show true distance downstream just
as it would if I used the plots function. However I want to show the box and
whisker diagrams. My distances are not in evenly spaced intervals.

Is there a way to do this with boxplots or perhaps another function?


Seems very simple but I've been trying for days!
Thanks so much in advance


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On Sat, Aug 21, 2010 at 11:42 PM, FishLover
<goldenpuppy_pawz@hotmail.com>wrote:
>
> Hello
>
> I'm trying to make boxplots
>
> However I'm having issues because my x axis is distance downstream on a
> river. The boxplots function in r assumes the x axis are categorical
> variables but I would like my boxplots to show true distance downstream
> just
> as it would if I used the plots function. However I want to show the box
> and
> whisker diagrams. My distances are not in evenly spaced intervals.
>
> Is there a way to do this with boxplots or perhaps another function?
>
>
> Seems very simple but I've been trying for days!
> Thanks so much in advance
>
>
> --
> View this message in context:
>
http://r.789695.n4.nabble.com/Help-making-box-plots-in-R-when-the-x-axis-is-a-quantitative-variable-tp2333967p2333967.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>
	[[alternative HTML version deleted]]

Hi FishLover,

I believe this will answer your question:

# getting some dummy data
seed(10)
y <- rnorm(100)
x <- sample(c(1,2,5.5), 100 , T)

boxplot(y~x) # won't work
boxplot(y~x, at = c(1,2,5.5), xlim = c(0,6)) # will work

Cheers,
Tal


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On Sun, Aug 22, 2010 at 6:42 AM, FishLover
<goldenpuppy_pawz@hotmail.com>wrote:
>
> Hello
>
> I'm trying to make boxplots
>
> However I'm having issues because my x axis is distance downstream on a
> river. The boxplots function in r assumes the x axis are categorical
> variables but I would like my boxplots to show true distance downstream
> just
> as it would if I used the plots function. However I want to show the box
> and
> whisker diagrams. My distances are not in evenly spaced intervals.
>
> Is there a way to do this with boxplots or perhaps another function?
>
>
> Seems very simple but I've been trying for days!
> Thanks so much in advance
>
>
> --
> View this message in context:
>
http://r.789695.n4.nabble.com/Help-making-box-plots-in-R-when-the-x-axis-is-a-quantitative-variable-tp2333967p2333967.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.
>
	[[alternative HTML version deleted]]