Nick - Thanks for your suggestion. I thought about making my own version of
-tabdisp- and putting this in, but I can't find code for tabdisp.ado in the
ado folders of Stata. Do you know if it exists as part of some larger file?
Al
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Nick Cox
Sent: Thursday, July 28, 2005 12:39 PM
To: [email protected]
Subject: st: RE: warning for -tabdisplay-
Although -disp- is an acceptable abbreviation for -display-, -tabdisp- is
the only name in question here.
I am agnostic on this point, even though I have on occasion been bitten by
this. While you're waiting for StataCorp to think about and possibly do
this, the check is not too difficult:
foreach v of var v1 v2 v3 {
bysort cess (`v') : assert `v'[1] == `v'[_N] }
Nick
[email protected]
FEIVESON, ALAN
> I often like to use the -tabdisplay- command, but when I do, I
> sometimes have this lurking fear that the variables in the "cell" are
> not really constant, in which case using -tabdisplay- may give
> erroneous information. Of course I can check for constant variables by
> issuing other commands first, but this is a waste of time if they
> really are constant. So I would like to propose that -tabdiplay- be
> modified to give a warning message if a variable in the "cell" is not
> constant. e.g.
>
>
> . tabdisp sess,cell(v1 v2 v3)
> *** warning - v2 is not constant *****
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