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Re: st: more than double precision (higher than 16 digit)
From
"Michael N. Mitchell" <[email protected]>
To
[email protected]
Subject
Re: st: more than double precision (higher than 16 digit)
Date
Sun, 28 Nov 2010 18:47:26 -0800
Dear Nicola
I wonder if you might make a new id variable based on the string variable like this...
sysuse auto
egen id = group(make)
Then you could use the new id variable for the program that requires the numeric id
variable.
I hope that helps,
Michael N. Mitchell
Data Management Using Stata - http://www.stata.com/bookstore/dmus.html
A Visual Guide to Stata Graphics - http://www.stata.com/bookstore/vgsg.html
Stata tidbit of the week - http://www.MichaelNormanMitchell.com
On 2010-11-28 4.27 PM, Nicola Man wrote:
Hi,
I am having problems with precision for a numeric variable (it is an ID variable). I have been keeping it as a string variable as there are more than 16 digits (the maximum number of exact digits stored in double precision, which problem I also encountered in other softwares like Excel and SPSS).
However, I now want to do some computation with a user-written program in STATA that needs it to be stored as a number. Would be great if someone would help me with this.
Thanks!
Nicola
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