< >
Linn said
I have problems in generating a variable I
need in my calculations:
I need to generate a variable X2 as a mean
of the variable X1 and the next
x1[_n+1] til X1[_n+8]. Thus the value of X2
is going to change for each observation in
the samlpe
Can this be done using egen?
As this variable X2 will be changed it is
not very practical to calculate the mean
by typing X2=(X1 + X1[_n+1] etc..)/n.
tssmooth ma x2 = x1, window(0 1 8)
You could apply this with an -if- condition if you only want to update
a certain part of the x2 sequence. If that is
the case, the easiest thing would be to use a -tempvar- to hold the
smoothed fragment, and then move the resulting observations back into
the x2 series.
Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html
*
* 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/
