Re: [R] 'breackpoints' (package 'strucchange'): 2 blocking error messages when using for multiple regression model testing

2011-07-30 Thread Michel Lutz
o all of this makes sense. Even is it's painful for me, because I don't know what happened in the system... Time for me to investigate. Thank you very very much, Achim. Enjoy your week-end. Michel On Sat, Jul 30, 2011 at 11:34 AM, Achim Zeileis wrote: > On Sat, 30 Jul 2011, Michel

Re: [R] 'breackpoints' (package 'strucchange'): 2 blocking error messages when using for multiple regression model testing

2011-07-30 Thread Michel Lutz
don't know what to do. Warm thanks, have a nice week-end. Michel On Sat, Jul 30, 2011 at 1:28 AM, Achim Zeileis wrote: > On Fri, 29 Jul 2011, Michel Lutz wrote: > > Achim, >> >> Thank you so much for this prompt answer. Really appreciated ! >> >> Anyway,

[R] 'breackpoints' (package 'strucchange'): 2 blocking error messages when using for multiple regression model testing

2011-07-29 Thread Michel Lutz
Hi Hadley, Thanks for the idea, but this was a typo... My code is the following: D <- data.frame(CPU=pred.cor2$CPU, PREP=PREP, BRG=BIZ$JOBPREPLOTRULE_BRG, CLOG=res.WIP, WE=DUMMY) model.mes <- CPU~PREP+BRG+CLOG+WE stab.model <- Fstats(model.mes, data = D, from = 0.1, vcov = function(x,

Re: [R] 'breackpoints' (package 'strucchange'): 2 blocking error messages when using for multiple regression model testing

2011-07-29 Thread Michel Lutz
Achim, Thank you so much for this prompt answer. Really appreciated ! Anyway, I am still a bit lost... don't you mind if I ask you somme additional questions? * *one standard approach is to employ a HACcovariance matrix* I did many researches but I never found this recommendation. The only paper

[R] 'breackpoints' (package 'strucchange'): 2 blocking error messages when using for multiple regression model testing

2011-07-29 Thread Michel Lutz
Good morning to all, I am encountering a blocking issue when using the function 'breackpoints' from package 'strucchange'. *Context:* I use a data frame, 248 observations of 5 variables, no NA. I compute a linear model, as y~x1+...+x4 x4 is a dummy variable (0 or 1). I want to check this model

[R] Fwd: [R-sig-hpc] Holtman's levelplot ?

2010-08-24 Thread Michel Lutz
://www.perfdynamics.com/Classes/Outlines/gdata.html and we just discussed this plot 2 weeks ago. --Neil Gunther Taking The Pith Out Of Performance http://perfdynamics.blogspot.com/ Follow me on Twitter http://twitter.com/DrQz Performance Dynamics Company http://www.perfdynamics.com/ >>&g