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st: historical maximum


From   Kit Baum <baum@bc.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: historical maximum
Date   Mon, 26 Sep 2005 21:50:55 -0400

Michael suggested

You can get the running/cumulative maximum using subscripting, such as

gen cummax=x in 1
replace cummax=max(x,cummax[_n-1]) in 2/l

If you have panel data or missing data/gaps, you may want to check out using
time series operators by using tsset.


The egen function record (think of setting a record...) handles the nitty-gritty details quite nicely. It is available in the egenmore package from ssc. It will deal with panel data and missing values.


Kit Baum, Boston College Economics
http://ideas.repec.org/e/pba1.html


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