Help its urgent
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 Nu?ez Rico <josue_n_r at 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]]
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Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/