Thank you all. all.equal is very helpful since I am also interested in finding the mismatched prices.
On 5/25/05, John Fox <[EMAIL PROTECTED]> wrote: > Dear Omar, > > Perhaps I'm missing something, but why not just subtract one matrix from the > other and test the difference in relation to the precision that you require > for the comparison? E.g., to test near equality, something like, abs(A - B) > < 1e-13. > > I hope this helps, > John > > -------------------------------- > John Fox > Department of Sociology > McMaster University > Hamilton, Ontario > Canada L8S 4M4 > 905-525-9140x23604 > http://socserv.mcmaster.ca/jfox > -------------------------------- > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Omar Lakkis > > Sent: Wednesday, May 25, 2005 9:09 AM > > To: r-help@stat.math.ethz.ch > > Subject: [R] precision problem > > > > 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 > > ______________________________________________ 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