Re: [R] Superimposing y-variables in Lattice formulas

2008-11-17 Thread Deepayan Sarkar
On Sun, Nov 16, 2008 at 7:27 PM, Stavros Macrakis [EMAIL PROTECTED] wrote: Thank you for the pointer to your paper Getting Started with Lattice Graphics -- it looks very useful. I think we're talking past each other on the question of the semantics of formula operators, and it's probably not

Re: [R] Superimposing y-variables in Lattice formulas

2008-11-16 Thread Stavros Macrakis
Deepayan, Thanks again for your explanations. I must admit I am still struggling with some of these concepts (though I have in fact read more than just help pages!), and I would be delighted to find a holistic introduction to the concepts of formulae and of the lattice system -- in fact I have

Re: [R] Superimposing y-variables in Lattice formulas

2008-11-16 Thread Deepayan Sarkar
On 11/16/08, Stavros Macrakis [EMAIL PROTECTED] wrote: Deepayan, Thanks again for your explanations. I must admit I am still struggling with some of these concepts (though I have in fact read more than just help pages!), and I would be delighted to find a holistic introduction to the

Re: [R] Superimposing y-variables in Lattice formulas

2008-11-16 Thread Rolf Turner
Deepayan --- you are too patient by half! :-) cheers, Rolf Turner ## Attention:\ This e-mail message is privileged and confid...{{dropped:9}} __

Re: [R] Superimposing y-variables in Lattice formulas

2008-11-16 Thread Stavros Macrakis
Thank you for the pointer to your paper Getting Started with Lattice Graphics -- it looks very useful. I think we're talking past each other on the question of the semantics of formula operators, and it's probably not productive to continue. I would guess that the underlying issue is that we

Re: [R] Superimposing y-variables in Lattice formulas

2008-11-16 Thread hadley wickham
Hi Stavros, I think we're talking past each other on the question of the semantics of formula operators, and it's probably not productive to continue. I would guess that the underlying issue is that we come from different communities, and so have different background assumptions. Perhaps

Re: [R] Superimposing y-variables in Lattice formulas

2008-11-15 Thread Stavros Macrakis
On Fri, Nov 14, 2008 at 6:55 PM, Deepayan Sarkar [EMAIL PROTECTED] wrote: ...But how do I specify that I want to display all the Subjects on a... single graph, superimposing them all? Have you tried xyplot ( conc ~ time , Indometh, groups = Subject ) ? Thanks very much for your help! That

Re: [R] Superimposing y-variables in Lattice formulas

2008-11-15 Thread Deepayan Sarkar
On 11/15/08, Stavros Macrakis [EMAIL PROTECTED] wrote: On Fri, Nov 14, 2008 at 6:55 PM, Deepayan Sarkar [EMAIL PROTECTED] wrote: ...But how do I specify that I want to display all the Subjects on a... single graph, superimposing them all? Have you tried xyplot ( conc ~ time ,

[R] Superimposing y-variables in Lattice formulas

2008-11-14 Thread Stavros Macrakis
Given a data frame of a categorical variable and two continuous variables, I would like to display one continuous variable against the other for each value of the categorical variable, all superimposed on the same plot. For example: data(Indometh); str(Indometh) Classes 'nfnGroupedData',

Re: [R] Superimposing y-variables in Lattice formulas

2008-11-14 Thread Deepayan Sarkar
On Fri, Nov 14, 2008 at 1:23 PM, Stavros Macrakis [EMAIL PROTECTED] wrote: Given a data frame of a categorical variable and two continuous variables, I would like to display one continuous variable against the other for each value of the categorical variable, all superimposed on the same plot.