search for: bodley

Full_Name: John Bodley Version: 2.5.1 (2007-06-27) OS: Windows XP Submission from: (NULL) (12.144.182.66) I was fitting a number of time series in R using the stats::HoltWinters method to define a single exponential smoothing model, i.e., beta = gamma = 0. I came across an example where the fitted value of alpha was...

An update on this: I just patched HoltWinters() to use optimize() in the univariate case, and it now computes the correct value. David John Bodley wrote: > Hi, > > Thanks for the quick response. I upgraded by version of R on Windows to the > latest (2.7.0) and re-ran the analysis and get the same result of 48.87989. > > The original time series was a non-regular zoo() object and I converted it > to a time series with da...

...tarting value help? However, HoltWinters is using optim() in a case it is not designed for (one-dimensional optimization): see the note on its help page. I think this could easily be changed, but as HoltWinters is contributed code I am Cc:ing the author for comment. On Fri, 16 May 2008, john.bodley at gmail.com wrote: > Full_Name: John Bodley > Version: 2.5.1 (2007-06-27) > OS: Windows XP > Submission from: (NULL) (12.144.182.66) > > > I was fitting a number of time series in R using the stats::HoltWinters method > to define a single exponential smoothing model, i.e.,...

...ever, HoltWinters is using optim() in a case it is not designed for > (one-dimensional optimization): see the note on its help page. I think > this could easily be changed, but as HoltWinters is contributed code I > am Cc:ing the author for comment. > > On Fri, 16 May 2008, john.bodley at gmail.com wrote: > >> Full_Name: John Bodley >> Version: 2.5.1 (2007-06-27) >> OS: Windows XP >> Submission from: (NULL) (12.144.182.66) >> >> >> I was fitting a number of time series in R using the >> stats::HoltWinters method >> to def...

...e greatly appreciated. Using samba 2.2.5. Basically it's just to protect against idiots who delete a file or folder by accident. I realize they could just write empty files with same name but not worried about that. They need to update files and create files but no delete. Please help. Charles Bodley

Hi, I have a data frame which has a subset of columns containing character representations of dates. The data frame is obtained via the DBI::fetch(rs, ...) method. I would like to convert all the columns which were originally dates in the database to R dates. I can obtain a logical index of columns which are dates via > idx <- dbColumnInfo(rs)$type == "DATE". I'm having