Dear Maarten, Ron, Joseph,
Thank you very much for the
useful commands and solutions.
I will learn how to do it
and try it.
> I'm not sure what the "significance" of a peak is,
> and I notice that
> you have rather shyly surrounded it with quotes.
> What exactly do you
> want to find out about the peak.
What I would like to show:
(1) whether the curve is really rising up and
fallind down, instead of monotonously
rising/falling.
(2) whether the "x" (not "y") for the peak
is significantly different,
when there are two or more of such curves,
Indeed there are some mathematical models
but, when I tried to apply them by "nl",
they did not converge.
Yoshiro
--------------------------------------
Celebrate Yahoo! JAPAN 10th Anniversary
http://pr.mail.yahoo.co.jp/10thann/
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/