Hi, Nick!

plot(......, type="h", lwd=5, lend=3, xaxt="n")
axis(1, at=c(...))

is the way to start, after which you play with the code. For years.

Bob

On 3 April 2010 21:52, Nick Matzke <matzke@berkeley.edu> wrote:

> Hi,
>
> I have a simple task I can't figure out.  I'd like to take some
> measurements I made, e.g.:
>
> year (y-axis)
> 1
> 2
> 3
> 4
> 5
> 6
>
> counts (x-axis)
> 10
> 10
> 20
> 30
> 40
> 50
>
> And then, make a barplot with the x-axis ticks (representing the borders
> between years) between the bars.
>
> However, barplot seems to force you to make the x-axis arbitrary
> categories.  I want it to be continuous (as in a histogram) as I have to bin
> the data by a series of different time periods (1 year intervals, 2 year
> intervals, etc.) and then plot several of the histograms/barplots in a
> series of figures to show how differing resolution changes the pattern.
>
> I have calculated the counts manually, but I can't just pipe the raw data
> into hist due to its weirdness (species stratigraphic ranges).
>
> Basically I want a scatterplot to plot x,y data points, except with
> vertical bars instead of points.
>
> I've tried hacking hist() but so far without luck.
>
> Any help greatly appreciated!
>
> Nick
>
>
> --
> ====================================================
> Nicholas J. Matzke
> Ph.D. Student, Graduate Student Researcher
> Huelsenbeck Lab
> Center for Theoretical Evolutionary Genomics
> 4151 VLSB (Valley Life Sciences Building)
> Department of Integrative Biology
> University of California, Berkeley
>
> Graduate Student Instructor, IB200A
> Principles of Phylogenetics: Systematics
> http://ib.berkeley.edu/courses/ib200a/index.shtml
>
> Lab websites:
> http://ib.berkeley.edu/people/lab_detail.php?lab=54
> http://fisher.berkeley.edu/cteg/hlab.html
> Dept. personal page:
> http://ib.berkeley.edu/people/students/person_detail.php?person=370
> Lab personal page: http://fisher.berkeley.edu/cteg/members/matzke.html
> Lab phone: 510-643-6299
> Dept. fax: 510-643-6264
> Cell phone: 510-301-0179
> Email: matzke@berkeley.edu
>
> Mailing address:
> Department of Integrative Biology
> 3060 VLSB #3140
> Berkeley, CA 94720-3140
>
> -----------------------------------------------------
> "[W]hen people thought the earth was flat, they were wrong. When people
> thought the earth was spherical, they were wrong. But if you think that
> thinking the earth is spherical is just as wrong as thinking the earth is
> flat, then your view is wronger than both of them put together."
>
> Isaac Asimov (1989). "The Relativity of Wrong." The Skeptical Inquirer,
> 14(1), 35-44. Fall 1989.
> http://chem.tufts.edu/AnswersInScience/RelativityofWrong.htm
>
> ______________________________________________
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Bob O'Hara

Biodiversity and Climate Research Centre
Senckenberganlage 25
D-60325 Frankfurt am Main,
Germany

Tel: +49 69 798 40216
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