It is hard to understand that your R code will not work with a double matrix since double is just short for double precision floating point matrix. Your only alternative would be integer.
>From ?numeric "It is a historical anomaly that R has two names for its floating-point vectors, double and numeric (and formerly had real). "double is the name of the type. numeric is the name of the mode and also of the implicit class." ------------------------------------- David L Carlson Associate Professor of Anthropology Texas A&M University College Station, TX 77840-4352 -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of bruce...@umn.edu Sent: Wednesday, July 31, 2013 3:48 PM To: r-help@r-project.org Subject: [R] double matrix? Hi- I have a 37 X 473971 character matrix that I am trying to convert into a numeric matrix. When I use the code: class(matrix) = "numeric" I end up with something called a "double matrix" whose dimensions are still 37 X 473971 I have also tried new = apply(matrix,2, as.numeric) and got the same thing. The analysis code I am ultimately attempting to run on this data requires that it be in a numerical matrix, and it is really not okay with a double matrix. Does anyone know how to fix this? Thanks. -- Jessica R.B. Musselman, MS T32 Trainee/Doctoral Candidate University of Minnesota Department of Pediatrics Division of Epidemiology/Clinical Research Mayo Mail Code 715 Room 1-195 Moos Tower 420 Delaware St. SE Minneapolis MN 55455 Phone: (612)626-3281 email: bruce...@umn.edu ______________________________________________ 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. ______________________________________________ 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.
