[R] precision problem

From: Omar Lakkis <uofiowa_at_gmail.com>
Date: Thu 26 May 2005 - 00:08:30 EST

I have prices that I am finding difficult to compare with ==, > and >, due to precision. For example: the numbers should match, with '==', but they differ in the magnitude of 1e-14 due to bunch of calculations that I run on them. Programming with java, I am used to implementing a function that compares the difference between the numbers to a pre determined precision factor. This could be very slow when I have two matrices of numbers that I could otherwise compare with a simple '==',
'>' or '<' in R.

What is teh best solution for this problem? Can I control the precision of ==, > and < without having to reimplement the operations in a slow way?

R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu May 26 00:17:45 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:32:05 EST