[R] NLME: Limitations of using identify to interact with scatterplots?

[Paul Murrell]

Hi

Take a look at panel.identify() (in the 'lattice' package).

I'm not sure if it will help you because I cannot run your example code.

Paul


Douglas Bates wrote:
> Most plotting functions in the nlme package use lattice graphics
> functions based on the grid package.  Identify will not work with
> lattice graphics.  I'm not sure if there is a replacement.
> 
> On 8/17/06, Greg Distiller <gregd at stats.uct.ac.za> wrote:
>> I have a quick question regarding the use of identify to interact with
>> points on a scatterplot. My question is essentially: can identify be used
>> when one is plotting model objects to generate diagnostic plots?
>> Specifically I am using NLME.
>> For example, I am plotting the fitted values on the x axis vs a variable
>> called log2game with the following code:
>>
>> plot(D2C29.nlme, log2game ~ fitted(.), abline=c(0,1))
>>
>> and then I have tried to use identify as follows:
>>
>> identify(D2C29.nlme$fitted[,2],Data2$log2game,row.names(Data2))
>>
>> (if I leave out the [,2] on the fitted attributes then I am told that x and
>> y are not the same length and it appears that this is due to the fact that
>> the fitted attribute has 2 columns.)
>>
>> but I get an error message that "plot.new has not been called yet".
>>
>> I am not sure if this is because I am doing something wrong or if identify
>> simply cannot be used in this context.
>>
>> Many thanks
>>
>> Greg
>>
>> ______________________________________________
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>> 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.
>>
> 
> ______________________________________________
> R-help at stat.math.ethz.ch 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.

-- 
Dr Paul Murrell
Department of Statistics
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