[R] overlay 2 dot plots

[David Winsemius]

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.berton at gene.com> wrote:
> 
>> From: Bert Gunter <gunter.berton at gene.com>
>> Subject: Re: [R] overlay 2 dot plots
>> To: "Andras Farkas" <motyocska at yahoo.com>
>> Cc: r-help at 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 <motyocska at 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 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.
>> 
>> 
>> 
>> -- 
>> 
>> 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
>> 
> 
> ______________________________________________
> 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.

David Winsemius
Alameda, CA, USA