Re: Reinstalling packages was ---Re: st: Re: -firstdigit- available from SSC----

["Zou Hong" <hzou@ln.edu.hk>]

Dear Ronnie, many thanks. I will try it.
Joe

----- Original Message ----- 
From: "Ronnie Babigumira" <rb.glists@gmail.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Monday, May 28, 2007 5:20 PM
Subject: Reinstalling packages was ---Re: st: Re: -firstdigit- available 
from SSC----



> The list of (unofficial) user-written ado files is very long and I doubt 
> you will want to install all of them.
>
> If you would like to reinstall the ones you installed before reinstalling 
> your Stata system. You would need to have a record of the packages you had 
> installed (you could have used -ado dir-, -adolist- to do this)
>
> All that said, I am not sure whether uninstalling Stata also removes the 
> directory in which these unofficial ado's are stored. You can check where 
> your unofficial stuff is using -sysdir- and you can check to see if your 
> packages are still on the system by running -ado dir-
>
> Hope this helps
>
>
> Zou Hong wrote:
>
> > Dear All,
> >
> > I have reinstalled my Stata system and run "update all" in Stata.
> >
> > I wonder whether there is a simply way to identify and install all 
> > (unofficial) user-written ado files (like ivreg2 and xtabond2 and many 
> > others).
> >
> > Many thanks
> > Joe
> >
> > ----- Original Message ----- 
> > From: "Nick Cox" <n.j.cox@durham.ac.uk>
> > To: <statalist@hsphsun2.harvard.edu>
> > Cc: <nikos@iza.org>
> > Sent: Thursday, May 24, 2007 12:03 AM
> > Subject: st: -firstdigit- available from SSC
> >
> >
> >
> > > Thanks to Kit Baum, a new package -firstdigit-
> > > is now available from SSC. Stata 9 is required,
> > > as the program depends on Mata. Use -ssc-
> > > to install if interested.
> > >
> > > -firstdigit- tabulates and analyses the first
> > > digits of numeric variables.  It also tests
> > > Benford's law that digits d = 1,..,9 occur
> > > with probabilities log10(1 + 1/d). Thus given
> > > data of 12, 345, 6789, etc., it would extract
> > > 1, 3, 6, etc., tabulate the frequencies of
> > > the digits 1 to 9 and give a chi-square test
> > > of the law.
> > >
> > > Users of Stata 8 may wish to look at -benford-
> > > by Nikos Askitas, also available from SSC
> > > (and revised today).
> > >
> > > Alternatively, users of Stata 8 may use -chitest-
> > > from the package -tab_chi-, also available from
> > > SSC, for this purpose. The help details a Benford's
> > > Law example.
> > >
> > > Mata users may be interested to see how the main
> > > work goes in Mata:
> > >
> > > void fd_work(string scalar varname,
> > >             string scalar tousename,
> > >             string scalar percent)
> > > {
> > >        real colvector y, obs, exp
> > >        real scalar n, i, chisq
> > >        string scalar name
> > >
> > >        y = st_data(., varname, tousename)
> > >        n = rows(y)
> > >        exp = obs = J(9, 1, 0)
> > >
> > >        y = strtoreal(substr(strofreal(y), 1, 1))
> > >
> > >        for (i = 1; i <= 9; i++) {
> > >                obs[i] = colsum(y :== i)
> > >                exp[i] = n * log10(1 + 1/i)
> > >                name = "r(obs" + strofreal(i) + ")"
> > >                st_numscalar(name,
> > >                        percent == "" ? obs[i] : 100 * obs[i] / n)
> > >                name = "r(exp" + strofreal(i) + ")"
> > >                st_numscalar(name,
> > >                        percent == "" ? exp[i] : 100 * log10(1 + 1/i))
> > >        }
> > >
> > >        chisq = colsum(((obs - exp):^2) :/ exp)
> > >        st_numscalar("r(p)", chi2tail(8, chisq))
> > >        st_numscalar("r(chisq)", chisq)
> > >        st_numscalar("r(N)", n)
> > > }
> > >
> > > Nick
> > > n.j.cox@durham.ac.uk
> > >
> > > *
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> >
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