Date: Tue, 23 Jun 2009 18:24:00 +0100
From: Nick Cox <[email protected]>
Reply-To: [email protected]
To: [email protected]
Subject: st: RE: AW: rounding a tempvar
The reason you got the problem you got is precision. The variable you
created holds a value as close to .71 as is possible, but there is no
exact binary equivalent. But as Martin implies you needn't use new
variables and you should just specify a format.
Nick
[email protected]
Martin Weiss
Use "macro extended functions" as in - help extended_fcn-
*************
clear*
drawnorm x y, n(100) /*
*/ corr(1,0.71 \ 0.71, 1) /*
*/ cstorage(full)
corr
di in red `r(rho)'
di in red %3.2fc `r(rho)'
local wcorr: /*
*/ di %3.2fc `r(rho)'
di `wcorr'
*************
Cathy L. Antonakos
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
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