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st: rounding a tempvar


From   "Cathy L. Antonakos" <cathya@umich.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: rounding a tempvar
Date   Tue, 23 Jun 2009 12:18:14 -0400 (EDT)

Dear Statalist,

I want to display a correlation on a graph, rounded to 2 decimal places. A new, temporary variable, generated as follows, does not produce the rounded correlation I expect (r = 0.71).

. corr wandurav wanrate
(obs=177)

             | wandurav  wanrate
-------------+------------------
    wandurav |   1.0000
     wanrate |   0.7085   1.0000

. display `r(rho)'
.70846375

. tempvar wcorr

. gen `wcorr' = round(`r(rho)', .01)

. display `wcorr'
.70999998


There must be a simple way to do this. Thanks for your help.
Cathy

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