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st: re: generating a sequence of numbers in Mata


From   Kit Baum <baum@bc.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: re: generating a sequence of numbers in Mata
Date   Mon, 1 Oct 2007 22:05:29 -0400

Le Wang wonders why his Mata routine comes up one short some of the time. Just the usual finite-precision-arithmetic problem: remember that 0.1 is an irrational number in binary, so that adding it up 19 times does not necessarily give you exactly 1.90. Replace the line computing the number of points with

n=ceil((to-from)/increment) +1 /* Number of points*/

and it should work.


Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


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