Hi Josue, This should help, you are almost there.
# consider this dat <- c(1, 2) # passing TRUE/FALSE to the extraction function dat[c(TRUE, FALSE)] # Now moving to an array # Create an array with dimensions 100, 13 filled with random normal numbers dat <- array(data = rnorm(100*13), dim = c(100, 13)) # Now apply the principle above to the array # the logical test returns TRUE/FALSE, which is used to select from column 1 dat[ ,1][dat[ ,1] < 0] # for the entire dataset dat[dat < 0] Cheers, Josh On Fri, Oct 1, 2010 at 5:52 PM, Josue Nuñez Rico <josue_...@hotmail.com> wrote: > > Hi I am student of Masters and wanted to know if you can help with a problem > I have. I have an array of 100 * 13 and need to extract all values of that > array that are less than a value p = x, insert this code data = c (dat [, 1]> > = p1), but only and managed to tell me if is false or true that the data in > "column 1" of Table "dat" is greater than p1 and what I need is to extract > the values from the table. > urgent > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
