Shouldn't
if `i'==`j' & `j' ==`k' {
work?
/Jan
----- Original Message -----
From: "Christophe Bontemps" <[email protected]>
To: <[email protected]>
Sent: Friday, March 12, 2004 2:45 PM
Subject: st: Trouble with " if"
> Hi Everybody,
> I find strange the way stata handle a double equality condition in "if"
> statements
>
> Running the following trible loop on i, j and k with a condition like"
if
> `i'==`j'==`k' " gives a wrong answer, no warnings, no errors.
> Of course i know the solution for this problem but why does Stata accept
> these misleading statements in "if" ?
> running on Stata 8 SE the following :
> forvalues i = 1/3 {
> forvalues j = 1/3 {
> forvalues k = 1/3 {
> display in yellow " i=`i' j=`j' k=`k' "
>
> if `i'==`j'==`k' {
> di in green " case 1"
> }
> else {
> di in red "case 2"
> }
> }
> }
> }
> Gives
> i=1 j=1 k=1
> case 1
> i=1 j=1 k=2
> case 2
> .
> .
> i=2 j=2 k=1
> case 1
> i=2 j=2 k=2
> case 2
> i=2 j=2 k=3
> .
> .
> i=3 j=3 k=1
> case 1
> i=3 j=3 k=2
> case 2
> i=3 j=3 k=3
> case 2
>
>
> Thanks
>
> *
> * 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/
>
*
* 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/
