The Mata functions -select()- and -length()- are closest in spirit. For example:
*********************************
sysuse auto, clear
mata
st_view(X=.,., ("price", "mpg", "weight", "length"))
Y = select(X, X[., 1]:>mean(X[.,1]))
length(Y)
end
*********************************
keeps the rows of the data matrix for which the price of the car is
greater than the mean.
T
On Tue, Aug 25, 2009 at 5:12 PM, Frank Peter<[email protected]> wrote:
> Dear Statalister,
>
> Please, I am new to Stata, I am trying to replicate some R commands in Stata. I will like to know the equivalent of length and subset in Stata.
>
> Thanks.
>
> Frank
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
--
To every ω-consistent recursive class κ of formulae there correspond
recursive class signs r, such that neither v Gen r nor Neg(v Gen r)
belongs to Flg(κ) (where v is the free variable of r).
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
