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RE: st: RE: notes lost in append


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: notes lost in append
Date   Sat, 8 May 2004 19:36:57 +0100

I don't see that this offers much of a way ahead.

If I have one dataset in memory, then clearly 
I can do something with its -notes-, but 
the main difficulty is getting at the 
-notes- in other datasets. This is not 
to say that there is not an elaborate way 
of getting into each dataset and pushing 
out a copy of the notes from each, but it all 
sounds awfully messy. 

Perhaps, however, you can see a way of putting 
this into code. 

Nick 
n.j.cox@durham.ac.uk 

Fred Wolfe
 
> I think there is a possible work-around. As notes are stored as 
> -var[note(n)]:-, one could pull off the notes from each data 
> set prio to 
> the append/merge, compare them and then merge them into the 
> master set 
> according to some rule. I could see how this might be useful.
> 
> Fred
> 
> At 12:45 PM 5/8/2004, you wrote:
> >What kind of work-around are you expecting?
> >
> >Stata's problem, I think, is that it expects at most one
> >note for each combination of name and number, e.g. "mpg"
> >and "1".
> >
> >In addition, as the variables in the datasets typically
> >have the same names -- little point in -append-ing
> >otherwise -- it is difficult to think of a work-around
> >other than having unique variable names in each dataset,
> >to each of which you attach -notes-. I haven't tested that.
> >
> >A clumsier alternative is to store text in a string
> >variable in each dataset.
> >
> >Devra Golbe
> >
> > > I would like to append two data files each having notes.  As
> > > the output
> > > below indicates,  notes from the "using" file are evidently
> > > not retained
> > > when the master file already contains notes on the same
> > > variable.  The same
> > > is true for a note attached to the file as a whole:  while it
> > > is possible
> > > to have multiple notes, if the master file contains such
> > > notes, none are
> > > retained from the using file.
> > >
> > > Does anyone know of a work-around?
> > >
> > > Thanks,
> > > Devra
> > >
> > > --------------------------------------------------------------
> > > -----------
> > > . use "C:\Stata8\auto.dta"
> > > (1978 Automobile Data)
> > >
> > > . keep if foreign==0
> > > (22 observations deleted)
> > >
> > > . notes
> > > . note: these are the domestic obs
> > > . note make: TS created in Domestic file
> > > . note price: TS created in Domestic file
> > > . save autoD, replace
> > > file autoD.dta saved
> > >
> > > . notes
> > >
> > > _dta:
> > >    1.  these are the domestic obs
> > > make:
> > >    1.  7 May 2004 16:19 created in Domestic file
> > > price:
> > >    1.  7 May 2004 16:19 created in Domestic file
> > > . clear
> > >
> > > . use "C:\Stata8\auto.dta"
> > > (1978 Automobile Data)
> > >
> > > . keep if foreign==1
> > > (52 observations deleted)
> > >
> > > . notes
> > >
> > > . note: these are the foreign obs
> > > . note: this is a second note attached to the foreign file
> > > . note make: TS created in Foreign file
> > > . note make: this is a 2nd note attached to make in the 
> Foreign file
> > > . note mpg: TS created in foreign file
> > >
> > > . save autoF, replace
> > > file autoF.dta saved
> > >
> > > . notes
> > > _dta:
> > >    1.  these are the foreign obs
> > >    2.  this is a second note attached to the foreign file
> > > make:
> > >    1.  7 May 2004 16:19 created in Foreign file
> > >    2.  this is a 2nd note attached to make in the Foreign file
> > > mpg:
> > >    1.  7 May 2004 16:19 created in foreign file
> > >
> > > . append using "D:\Documents and Settings\Devra\My
> > > Documents\TEMP\autoD.dta"
> > > (label origin already defined)
> > >
> > > . notes
> > > _dta:
> > >    1.  these are the foreign obs
> > >    2.  this is a second note attached to the foreign file
> > > make:
> > >    1.  7 May 2004 16:19 created in Foreign file
> > >    2.  this is a 2nd note attached to make in the Foreign file
> > > price:
> > >    1.  7 May 2004 16:19 created in Domestic file
> > > mpg:
> > >    1.  7 May 2004 16:19 created in foreign file
> >
> >*
> >*   For searches and help try:
> >*   http://www.stata.com/support/faqs/res/findit.html
> >*   http://www.stata.com/support/statalist/faq
> >*   http://www.ats.ucla.edu/stat/stata/
> 
> 
> Fred Wolfe
> National Data Bank for Rheumatic Diseases
> Wichita, Kansas
> Tel (316) 263-2125     Fax (316) 263-0761
> fwolfe@arthritis-research.org
> 

*
*   For searches and help try:
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*   http://www.stata.com/support/statalist/faq
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