Thanks Haris, I eventually got this to work thanks to some off-list
help and lots of trials and error. I have to admit I still don't
understand all the details of the procedure (the "generic" paradigm
in particular escapes me), but at least I have achieved a working
example that I can alter and study step by step.
Thanks again,
Baptiste
On 28 Jun 2008, at 19:13, Charilaos Skiadas wrote:
On Jun 27, 2008, at 1:44 PM, baptiste Auguié wrote:
DeaR list,
Pardon the stupidity of this question but I've been trying this
for a while now without success.
I've followed the example given in the green book "programming
with data", and I now have a working example of a S4 class with a
few methods (plot, summary, as.data.frame). It's all very nice in
one file, but I cannot find the way to put this information in a
package. I've created several simple packages (without S4 classes)
in the past using package.skeleton and manual editing / adding of
some files.
The question I have now is where do the setClass and setMethod
live in the folder tree? I sort of believe they should be defined
in a source file in the sub-directory R/, but is there a special
name to give to these files, how do they get recognised during
installation or build?
I've tried to find the answer in "writing R extensions" but I must
have missed the relevant section.
I don't think there's any particular name needed for the file. I
had a look at Matrix for an example when I was writing an S4
package, and kind of followed what they were doing. In my example,
I had one file that had all the setGeneric calls, and another one
named after my S4 class containing setClass and setMethod. And then
you need to work on the NAMESPACE file. I think to some extent this
is described in "1.6.6 Name spaces with formal classes and methods".
Hopefully someone more experienced than me can offer a more
authoritative answer.
Many thanks,
Sincerely,
Baptiste
Haris Skiadas
Department of Mathematics and Computer Science
Hanover College
PS: I'm not sure a minimal example is relevant, I could provide
one if requested.
OS is MacOS 10.4,
> sessionInfo()
R version 2.7.0 RC (2008-04-21 r45421)
powerpc-apple-darwin8.10.1
locale:
en_GB.UTF-8/en_US.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8
attached base packages:
[1] datasets utils stats graphics grDevices splines
grid methods base
_____________________________
Baptiste Auguié
Physics Department
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK
Phone: +44 1392 264187
http://newton.ex.ac.uk/research/emag
http://projects.ex.ac.uk/atto
_____________________________
Baptiste Auguié
Physics Department
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK
Phone: +44 1392 264187
http://newton.ex.ac.uk/research/emag
http://projects.ex.ac.uk/atto
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