st: trouble with replace and decimals

[Ben Zipperer <benzipperer@gmail.com>]

I am having trouble with the --replace-- command. Below is a simple
example. My intention is to make var1=9 for all observations with
var3==1.1. What is wrong with my code?

Thanks for your help,
Ben


. clear

. mata st_addobs(1)

. gen var1 = 0

. gen var2 = 1

. gen var3 = 1.1

. sum

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
        var1 |         1           0           .          0          0
        var2 |         1           1           .          1          1
        var3 |         1         1.1           .        1.1        1.1

. replace var1 = 9 if var3==1.1
(0 real changes made)

. replace var1 = 9 if var2==1
(1 real change made)

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/