[R] dotchart for matrix data

e-letter inpost at gmail.com
Sat Dec 18 19:27:00 CET 2010

On 18/12/2010, Peter Ehlers <ehlers at ucalgary.ca> wrote:
> On 2010-12-18 07:50, e-letter wrote:
>>> Ben Bolker
>>> Sat, 18 Dec 2010 07:07:24 -0800
> [... snip ...]
>> I am trying to create a chart like this
>> (http://www.b-eye-network.com/images/content/Fig4_3.jpg); so this is
>> not possible using R?
> That looks an awful lot like what lattice's dotplot would
> produce. So: have you tried dotplot() as Ben has suggested?

For the benefit of other novices, this is what I did (gnu/linux):

to a command terminal as root
start R

In another terminal as normal user


The resultant graph shows the categories on the abscissa and there
does not seem to be a way of selecting two columns from the original
matrix. It is not like the graph cited in the hyperlink quoted above,
but at least I have successfully followed instructions!

I changed the axes with the command:


I believe there is a command to select only certain rows of data which
I think will achieve the desired graph, if unable I'll ask again, so
thank you all.

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