[R] how can I plot bar plots with all the bars (negative andpositive) in the same direction????

[Robert Baer]

It occurred to me after my initial post that you will need a little more 
"fixing" of your axis labels if you have data that is not trivial integers 
as in your example.  Consider the following solution for some irrational 
random numbers:
    dat=rnorm(20)
    dat1=dat-min(dat)
    barplot(dat1,axes=FALSE)
    axis(2, round(seq(from=min(dat1),to=max(dat1),length.out=10), digits=1), 
round(seq(from=min(dat),to=max(dat),length.out=10), digits=1))

Rob Baer


>I believe that you will have to draw them in ggplot2 as someone mentioned 
>or in base graphics.  Here is a rough first attempt that may give you some 
>ideas.
> ================================
> xx <- -3:4
> yy <- rep(-3,length(xx))
> plot(xx,xx,  type="n", xlim=c(-4, 5))
> rect(xx, yy, xx+.5, xx )
> ================================
>
> --- On Fri, 9/3/10, Zoppoli, Gabriele (NIH/NCI) [G] 
> <zoppolig at mail.nih.gov> wrote:
>
>> From: Zoppoli, Gabriele (NIH/NCI) [G] <zoppolig at mail.nih.gov>
>> Subject: [R] how can I plot bar plots with all the bars (negative and 
>> positive) in the same direction????
>> To: "r-help at r-project.org" <r-help at r-project.org>
>> Received: Friday, September 3, 2010, 1:12 PM
>> Dear r-help mailing list,
>>
>> this seems stupid, but I actually don't find the solution:
>>
>> if I have a vector of numbers x of length n, ranging, say,
>> from -3 to 4, if I do
>>
>> barplot (x)
>>
>> all the values below 0 go downwards, and all the positive
>> values go upward. How can I make them all begin from the
>> minimum pointing upwards?
>>
>> Thanks!
>>
>>
>> Gabriele Zoppoli, MD
>> Ph.D. Fellow, Experimental and Clinical Oncology and
>> Hematology, University of Genova, Genova, Italy
>> Guest Researcher, LMP, NCI, NIH, Bethesda MD
>>
>> Work: 301-451-8575
>> Mobile: 301-204-5642
>> Email: zoppolig at mail.nih.gov
>> ______________________________________________
>> 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.
>