Full_Name: Jeremiah Cohen Version: 2.9.0 OS: Windows XP Submission from: (NULL) (129.59.230.235)
I believe there is a bug in the seq() function for certain values of the "from" argument. Here are examples: > seq(-.2, .1, .1) [1] -0.2 -0.1 0.0 0.1 > seq(-.3, .1, .1) [1] -3.000000e-01 -2.000000e-01 -1.000000e-01 5.551115e-17 1.000000e-01 > seq(-.4, .1, .1) [1] -0.4 -0.3 -0.2 -0.1 0.0 0.1 > seq(-.5, .1, .1) [1] -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 > seq(-.6, .1, .1) [1] -6.000000e-01 -5.000000e-01 -4.000000e-01 -3.000000e-01 -2.000000e-01 -1.000000e-01 1.110223e-16 1.000000e-01 > seq(-.7, .1, .1) [1] -7.000000e-01 -6.000000e-01 -5.000000e-01 -4.000000e-01 -3.000000e-01 -2.000000e-01 -1.000000e-01 1.110223e-16 [9] 1.000000e-01 > seq(-.8, .1, .1) [1] -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 So, for example, > which(seq(-.2, .1, .1) == 0) [1] 3 > which(seq(-.3, .1, .1) == 0) integer(0) Here are the results of the "version" command on my machine: platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 2 minor 9.0 year 2009 month 04 day 17 svn rev 48333 language R version.string R version 2.9.0 (2009-04-17) ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel