On Jun 22, 2013, at 8:22 AM, Andras Farkas wrote:
> Bert,
>
> you did judge all right, indeed, I do not have a clue about how
> lattice/trellis graphics works. With regards to "Feel free to demonstrate
> publicly that **I** don't have a clue if I have misunderstood or misjudged",
> thank you, but I will pass on that... I do not feel it is important for me to
> publicly demonstrate the fact that someone does not know as much about the
> area of **my** primary interest as **I** do, instead, I would rather teach
> them... There are others that do a great job at this kind of "public
> demonstration":-).
>
> by overlaying this is what I meant:
>
> library(lattice)
> y <-c(1:58)
> x <-runif(58,5,10)
> z <-runif(58,8,12)
> dataset <-data.frame(y,x,z)
>
> dotplot(y ~ c(x,z), data = dataset,col=c("blue","red"))
I think you should wait a bit before doing any more lattice demonstrations.
That approach completely obscures the source of hte values from 'x' and 'z'
groups. Using y ~ x+z would be much more informative (as advised by Duncan
MacKay
--
David
>
> thanks for the help,
>
> Cheers,
>
> Andras
>
> --- On Fri, 6/21/13, Bert Gunter <gunter.ber...@gene.com> wrote:
>
>> From: Bert Gunter <gunter.ber...@gene.com>
>> Subject: Re: [R] overlay 2 dot plots
>> To: "Andras Farkas" <motyoc...@yahoo.com>
>> Cc: r-help@r-project.org
>> Date: Friday, June 21, 2013, 4:37 PM
>> dotplot is a lattice function. "add"
>> is an argument to some base
>> graphics. Never the twain shall meet. There is no "add"
>> argument to
>> dotplot -- did you read the lattice Help for dotplot (found
>> under
>> xyplot)??
>>
>> I don't understand what you mean by "overlay" dotplots, but
>> lattice
>> does this via conditioning variables or groups, depending on
>> what you
>> have in mind.
>>
>> In any case, it appears to me that you need to first read a
>> tutorial
>> or book on lattice/trellis graphics before proceeding. Or
>> find someone
>> local who can help you: afaics, you do not have a clue about
>> how
>> lattice/trellis graphics works. It's far more than (I) can
>> or should
>> be communicated on r-help.
>>
>> Feel free to demonstrate publicly that **I** don't have a
>> clue if I
>> have misunderstood or misjudged.
>>
>> Cheers,
>> Bert
>>
>>
>> On Fri, Jun 21, 2013 at 12:43 PM, Andras Farkas <motyoc...@yahoo.com>
>> wrote:
>>> Dear All,
>>>
>>> wonder if you would provide your insights on the
>> following: the code:
>>>
>>> library(lattice)
>>> y <-c(1:58)
>>> x <-runif(58,5,10)
>>> z <-runif(58,8,12)
>>> dataset <-data.frame(y,x)
>>> dotplot(y ~ x, data = dataset)
>>> dataset <-data.frame(y,z)
>>> dotplot(y~z,data = dataset,col="red")
>>>
>>> I would like to overlay the two plots, but no success
>> so far, I tryed the add=TRUE command, but does not seem to
>> work with this plot...
>>>
>>> appreciate the insights,
>>>
>>> Andras
>>>
>>> ______________________________________________
>>> 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.
>>
>>
>>
>> --
>>
>> Bert Gunter
>> Genentech Nonclinical Biostatistics
>>
>> Internal Contact Info:
>> Phone: 467-7374
>> Website:
>> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
>>
>
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA
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