Pter Malewski wrote
On Fri, Jun 01, 2001 at 03:49:50PM +0100, Prof Brian D Prof Brian D
Ripley wrote:
That is *not* the same thing. It replaces one Trellis plot by a series of plots, and loses some of the overall calculations (for example of common scales).
Oh I haven't metioned that! In my case there is no much harm because the plots that I'm currently making runs with scales=list(relation="free")...
BTW: when I said Trellis, I meant the original not lattice. > >
Is there a principal difference between lattice ans trellis except that the grid functions are so diffend an thus the panel-functions?
From my brief look atthe lattice and grid libraries, it is
remarkable is how similar lattice() is to trellis() its functions, while being very dissimilar underneath, mainly at the level of the functions in the grid library. This layering means that user code that is written for trellis, and which involves anything more than straightworward function calls, is unlikely to carry directly across to lattice. There are however large benefits in the grid/lattice separation of the code into layers. The grid library can be a basis for new graphics functions, or libraries, that greatly extend lattice, or do quite different things from lattice. The code in trellis is not layered in this way. A consequence is that it would be difficult and (perhaps even more importantly) generate some pretty contorted code, if one were to write another graphics library on top of trellis. Paul Murrell will probably think this so obvious that it is hardly worth saying, but maybe it needs to be said. John Maindonald email : john.maindonald at anu.edu.au Statistical Consulting Unit, phone : (6125)3998 c/o CMA, SMS, fax : (6125)5549 John Dedman Mathematical Sciences Building Australian National University Canberra ACT 0200 Australia -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._