Dear Ulas, A number of people have suggested changing the print precision via the digits argument to print(), and have explained that what you see when a number is printed doesn't necessarily reflect the precision of the stored number. You can also reset the digits option, which defaults to 7. (You'll still lose trailing zeroes, however.) For you example:
> options(digits=10) > mdat [,1] [,2] [,3] [,4] [1,] 0.018797295 1.000000000 0.010500242 0.074216423 [2,] 0.444620855 0.000320438 1.108755638 0.036289824 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 Ulas Karaoz > Sent: Thursday, January 06, 2005 6:57 PM > To: R-help@stat.math.ethz.ch > Subject: [R] How to avoid rounding of matrix elements? > > Hi all R-users, > If I have a matrix with numeric elements as follows, the > values are rounded when I try to refer to a specifici element > using [], the value is rounded. > The same thing happens if the matrix is read from a file, the > values are stored to the correct precision but then when I > try to refer to a specific element (such as using [], it is rounded. > > How do I avoid this rounding? > > >mdat<-matrix(c(0.0187972950,0.4446208550,1.0000000000,0.00032 > 04380,0.0105002420,1.1087556380,0.0742164230,0.0362898240), > nrow = 2, ncol=4) > > mdat > [,1] [,2] [,3] [,4] > [1,] 0.01879729 1.000000000 0.01050024 0.07421642 [2,] > 0.44462085 0.000320438 1.10875564 0.03628982 > > Thanks. > > ______________________________________________ > 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