Theuer Stefan
> To this solution i have 2 questions:
> 1) What is the meaning of the transpose mark, in my opinion
> the syntax should also run without this mark.
The original questioner clearly specified that he wanted
a column vector. In this case, -tabstat- saves results
as a row vector. For that desired outcome, you need
to transpose. If you are happy with a row
vector, the transpose is indeed unnecessary.
> 2) if i like getting not alone the results of the total
> mean but also the differences between the mean of all items
> and grouped items i used the following ado file. My
> question is, is there a way to use the labels of the
> by-variable for the matrix list command at the bottom?
>
> program define compmean
> version 8.0
> syntax varlist [if] [in], by(varname)
>
> marksample touse
> quietly levels `by' if `touse', local(K)
>
>
>
> * total
>
> di as text _newline(2) "{hline 104}"_newline "total means"_newline
> tabstat `varlist' if `touse', stats(mean) format(%9.3f)
> save casewise
> matrix total = r(StatTot)
> di _newline "{hline 104}" _newline(2)
>
> * groupwise
>
> di _newline "{hline 104}" _newline "means of the groups" _newline
> tabstat `varlist' if `touse', stats(mean) by(`by')
> format(%9.3f) save casewise nototal miss
> di _newline "{hline 104}" _newline(2)
>
> * matixes of the means of the groups and differencies of the means
>
> foreach num of numlist 1/`K'{
> matrix cl`num' = r(Stat`num')
> matrix cl`num't = (cl`num' - total)*100
>
> }
>
> * display
> di _newline(2) "{hline 104}" _newline "differences of the
> means" _newline
>
> foreach num of numlist 1/`K' {
> di _continue "Cluster `num' "
> matrix list cl`num't, noheader format(%9.1f) noblank nonames
> }
>
> di "{hline 104}"
>
> end
> exit
This program is still fairly buggy e.g. it seems
to assume categorical variables are numeric and
labelled 1 up.
I'd approach this from the point of view of
creating temporary variables which are deviations
from the mean, and then calling up -tabstat-;
that is, do more upstream of -tabstat- and
much less downstream.
Nick Cox
> > . tabstat experience education children, s(mean) save
> > . matrix mean = r(StatTot)'
> > . matrix li mean
> >
> > Note the transpose mark.
Mohamad Khalid Dimaporo
> > > Im a beginner with stata and cant find a simple method to
> > > create a (n x 1)
> > > matrix of my variable averages. For example, what command
> > > do I type to get a
> > > 3 x 1 matrix of the averages of experience education children.
Nick
[email protected]
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