Sara,
You're quite welcome.
Robert
Robert A. Yaffee, Ph.D.
Research Professor
Shirley M. Ehrenkranz
School of Social Work
New York University
home address:
Apt 19-W
2100 Linwood Ave.
Fort Lee, NJ
07024-3171
Phone: 201-242-3824
Fax: 201-242-3825
[email protected]
----- Original Message -----
From: sara borelli <[email protected]>
Date: Monday, May 7, 2007 10:01 am
Subject: Re: st: cumulate values of X whithin group
To: [email protected]
> thank you very much!
> sara
>
> --- Robert A Yaffee <[email protected]> ha scritto:
>
> > Sara,
> > Use a generate rather than a replace statement in
> > the last line.
> >
> >
> > gen member=substr(var1,1,6)
> > gen oldate = substr(var1,10,14)
> > gen x = substr(var1,29,4)
> > drop if _n ==1
> > destring member, replace
> > destring x, replace
> > drop if _n == 5
> > drop var1
> > gen date=date(oldate,"md20y")
> > format date %td
> > gen cumx = sum(x)- x
> >
> > Cheers,
> > Robert
> >
> >
> >
> > Robert A. Yaffee, Ph.D.
> > Research Professor
> > Shirley M. Ehrenkranz
> > School of Social Work
> > New York University
> >
> > home address:
> > Apt 19-W
> > 2100 Linwood Ave.
> > Fort Lee, NJ
> > 07024-3171
> > Phone: 201-242-3824
> > Fax: 201-242-3825
> > [email protected]
> >
> > ----- Original Message -----
> > From: sara borelli <[email protected]>
> > Date: Saturday, May 5, 2007 2:45 pm
> > Subject: st: cumulate values of X whithin group
> > To: [email protected]
> >
> >
> > > Dear Statalist members,
> > >
> > > I have the following question:
> > >
> > >
> > > Member Date X
> > > 133 04-05-2000 1
> > > 133 04-07-2000 4
> > > 133 05-06-2000 2
> > > 133 07-10-2000 3
> > >
> > > 145 06-05-2000 5
> > > 145 06-15-2000 5
> > > 145 08-05-2000 0
> > > 145 10-20-2000 2
> > > 145 11-05-2000 4
> > > 145 12-03-2000 6
> > >
> > > Within each member, I need to create a variable
> > that
> > > cumulates the values of X up to the date of the
> > > current observation excluding the value of X of
> > the
> > > current observation, that is I need to create Xnew
> > > such that:
> > >
> > > Member Date X Xnew
> > > 133 04-05-2000 1 0
> > > 133 04-07-2000 4 1
> > > 133 05-06-2000 2 5
> > > 133 07-10-2000 3 7
> > >
> > > 145 06-05-2000 5 0
> > > 145 06-15-2000 5 5
> > > 145 08-05-2000 0 10
> > > 145 10-20-2000 2 10
> > > 145 11-05-2000 4 12
> > > 145 12-03-2000 6 16
> > >
> > > any help would be really appreciated
> > > [email protected]
> > >
> > >
> > >
> > > ___________________________________
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> > con la nuova Yahoo!
> > > Mail: http://it.docs.yahoo.com/nowyoucan.html
> > > *
> > > * For searches and help try:
> > > *
> > http://www.stata.com/support/faqs/res/findit.html
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> > *
> > * For searches and help try:
> > *
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> >
>
>
>
>
>
>
>
> ___________________________________
> L'email della prossima generazione? Puoi averla con la nuova Yahoo!
> Mail:
> http://it.docs.yahoo.com/nowyoucan.html
> *
> * For searches and help try:
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*
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