[R] histogram-like barplot? (or reverse?)

[Kjetil Halvorsen]

It might work to just say
barplot(table(...))

Kjetil

CC  Or maybe even   plot(table(...))



On Sat, Apr 3, 2010 at 5:14 PM, Bob O'Hara <rni.boh at gmail.com> wrote:
> 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 at 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:
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>> Lab personal page: http://fisher.berkeley.edu/cteg/members/matzke.html
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>> Dept. fax: 510-643-6264
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>> Email: matzke at berkeley.edu
>>
>> Mailing address:
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>> 3060 VLSB #3140
>> Berkeley, CA 94720-3140
>>
>> -----------------------------------------------------
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>> 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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>
>
>
> --
> Bob O'Hara
>
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>