Re: [Rd] setMethod("Logic", ...)

2006-09-04 Thread Martin Maechler
> "Robin" == Robin Hankin <[EMAIL PROTECTED]> > on Mon, 4 Sep 2006 09:41:46 +0100 writes: Robin> Professor Ripley Robin> thank you for this (and indeed thank you for solving my earlier Robin> problem on octonions). Robin> I still don't know how to force logic operatio

Re: [Rd] setMethod("Logic", ...)

2006-09-04 Thread Prof Brian Ripley
On Mon, 4 Sep 2006, Robin Hankin wrote: > Professor Ripley > > thank you for this (and indeed thank you for solving my earlier > problem on octonions). > > I still don't know how to force logic operations on brob objects to give an > error. I found this in the methods sources ## R does no

Re: [Rd] setMethod("Logic", ...)

2006-09-04 Thread Robin Hankin
Professor Ripley thank you for this (and indeed thank you for solving my earlier problem on octonions). I still don't know how to force logic operations on brob objects to give an error. 06, at 16:45, Prof Brian Ripley wrote: > Accordng to the S4groupGeneric page, there is no such group. >

Re: [Rd] setMethod("Logic", ...)

2006-09-01 Thread Prof Brian Ripley
Accordng to the S4groupGeneric page, there is no such group. My guess as to why: Those operators are not S3 generic in R, and S4 dispatch is piggy-backed on S3 dispatch (not necessarily, but for convenience). On Fri, 1 Sep 2006, Robin Hankin wrote: > Hi > > > In V&R the "polynomial" class i