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From | <Stefan.Gawrich@hlpug.hessen.de> |
To | <statalist@hsphsun2.harvard.edu> |
Subject | st: RE: precision Problem taking string from double var |
Date | Fri, 29 Oct 2010 14:23:06 +0200 |
Thanks Maarten and Nick! Creating an integer var is not so good in this special case because these files are huge already. Formatting the string output "%4.2" works fine. Doubles have 16 digits precision but without -format- option the -string- function does not follow that. Example: clear set obs 2 gen double x = 45.0000049 if _n == 1 replace x = 45.0000050 if _n == 2 gen string = string(x) gen str2 y =substr(string(x),4,2) gen str2 z =substr(string(x, "%4.2f"),4,2) br Thanks again Stefan * * 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/