Re: st: superposed rolled windows

["Michael S. Hanson" <mshanson@wesleyan.edu>]

On Jun 27, 2006, at 11:00 AM, Jeph Herrin wrote:

> Never mind, I figured out "F".  Funny that it isn't even
> mentioned on the time series functions page.
	That may be because it technically is not a function: it's an  
operator.  See -help tsvarlist-.

	I would agree that this information is not the easiest thing to find  
if you aren't certain what you are looking for:  -hsearch time series  
operators- (in Stata 9.2 or later) returns -tsvarlist- as the second  
link, while -hsearch time series functions- doesn't give -tsvarlist-  
until the 78th entry on my machine -- long after most people would  
give up searching, I suspect.

	I have observed over time (small pun intended) that many people  
think of L., F., D., and S. as functions instead of operators, and  
thus have trouble tracking down the information they need.  Note that  
in -help time- it does say, "See -varlist- for a table of time-series  
operators," but that sentence apparently is easy to miss.  Perhaps an  
explicit mention of -tsvarlist- under "Data management tools and time- 
series operators" on the -help time- page would, well, help.  A link  
to -tsvarlist- in the Description paragraph of -help  
time_series_operators- similarly might mitigate some of this  
confusion.  HTH.

                                        -- Mike


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