Re: [R] read a file into a matrix
read.delim gives me a data.frame. Is there a function that can return the result in a matrix rather than data.frame? m - as.matrix(read.delim(..)) -steve -- Steve Lianoglou Graduate Student: Computational Systems Biology | Memorial Sloan-Kettering Cancer Center | Weill Medical College of Cornell University Contact Info: http://cbio.mskcc.org/~lianos/contact __ 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.
Re: [R] read a file into a matrix
On Sat, Nov 21, 2009 at 11:55 AM, Steve Lianoglou mailinglist.honey...@gmail.com wrote: read.delim gives me a data.frame. Is there a function that can return the result in a matrix rather than data.frame? m - as.matrix(read.delim(..)) I knew this approach. But this takes an extra step. Is there a command that read a file directly into a matrix? Regards, Peng __ 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.
Re: [R] read a file into a matrix
I can't think of anything that is already built in. But you can always: read.as.matrix - function(...) as.matrix(read.delim(...)) and now you get one step only ;-) b On Nov 20, 2009, at 4:01 PM, Peng Yu wrote: On Sat, Nov 21, 2009 at 11:55 AM, Steve Lianoglou mailinglist.honey...@gmail.com wrote: read.delim gives me a data.frame. Is there a function that can return the result in a matrix rather than data.frame? m - as.matrix(read.delim(..)) I knew this approach. But this takes an extra step. Is there a command that read a file directly into a matrix? Regards, Peng __ 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.
Re: [R] read a file into a matrix
On Nov 20, 2009, at 1:01 PM, Peng Yu wrote: On Sat, Nov 21, 2009 at 11:55 AM, Steve Lianoglou mailinglist.honey...@gmail.com wrote: read.delim gives me a data.frame. Is there a function that can return the result in a matrix rather than data.frame? m - as.matrix(read.delim(..)) I knew this approach. But this takes an extra step. Is there a command that read a file directly into a matrix? You can wrap matrix() around a scan() call. An example might prompt more specifics. You also could easily modify read.delim (which is after all a wrapped scan call) to create a matrix rather than a dataframe. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ 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.
Re: [R] read a file into a matrix
What is wrong with the extra step? Is it taking too much time (you did not specify that), is it taking too much memory? How many times are you going to be doing it? If not many, then may be it is OK. You have to quantify what you are asking for. It may take longer to send a message to R-Help and get a response than to just read the file in and process it. On Fri, Nov 20, 2009 at 1:01 PM, Peng Yu pengyu...@gmail.com wrote: On Sat, Nov 21, 2009 at 11:55 AM, Steve Lianoglou mailinglist.honey...@gmail.com wrote: read.delim gives me a data.frame. Is there a function that can return the result in a matrix rather than data.frame? m - as.matrix(read.delim(..)) I knew this approach. But this takes an extra step. Is there a command that read a file directly into a matrix? Regards, Peng __ 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. -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? __ 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.
