I haven't tested the solutions proposed in this thread, but it seems  
possible that they may run afoul of the float problems discussed  
earlier in the week: see <http://www.stata.com/statalist/archive/2009-06/msg00569.html 
> and subsequent thread.
If I understand the bottom line of that discussion, the solution for  
Dan's code would be simply to replace the appropriate line with:
replace `var' = .  if float(`var') == float(0.0001)
I'm less certain if Kit's (otherwise clever and concise) code will  
have float issues.
On Jun 19, 2009, at 1:37 PM, Dan Blanchette wrote:
ds, has(type numeric)
foreach var of varlist `r(varlist)' {
 replace `var' = .  if `var' == 0.0001
}
On Jun 19, 2009, at 2:31 PM, Kit Baum wrote:
ds, has(type numeric)
mvdecode `r(varlist)' , mv(0.0001)
On Jun 20, 2009, at 8:43 AM, Roy Wada wrote:
for var _all : cap replace X=. if X==0.0001
I'm not certain if this will work, as I cannot find a guide to the  
syntax of the now deprecated -for- command: -help for- simply notes  
that "for is an out-of-date command as of Stata 8" and recommends  
using -foreach- (as in Dan's example) or -forvalues-.  Also, while - 
capture-ing all the failed replacements should work, I would expect it  
to be slower than the above examples, particularly as the number of  
non-numerical series in the OP's dataset increases.  (And the above- 
mentioned float issue likely still exists.)
HTH,
Mike
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