[R] Question concerning ggplot

Rainer M Krug RKrug at sun.ac.za
Tue Oct 24 14:00:04 CEST 2006


hadley wickham wrote:
>> When using
>> ggsmooth(method=lm)
>> is there a way to show the results of the separate linear regressions?
> 
> Do you mean doing a seperate linear regression for each group in your
> data?  If so, have a look at ?gggroup for some examples of exactly
> that.

No.

I do the following:

 > p <- ggplot(cc, . ~ expert, aesthetic=list(y=x0050, x=generation))
 > ggjitter(p)
 > ggsmooth(method=lm)

And I get six columns in the graph, one for each expert and 
ggsmooth(method=lm) draws the linear regression lines into the graphs.
I would like to have the coefficients and the R-square values of the 
linear regressions to analyse them further and to print them in the graphs.



> 
> Hadley


-- 
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)

Department of Conservation Ecology and Entomology
University of Stellenbosch
Matieland 7602
South Africa

Tel:		+27 - (0)72 808 2975 (w)
Fax:		+27 - (0)21 808 3304
Cell:		+27 - (0)83 9479 042

email:	RKrug at sun.ac.za
       	Rainer at krugs.de



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