>
> If you read each of your 230,000 variables in separately, you can
> combine them into a matrix or dataframe using cbind(variablename1, 2,
> etc.).
>
> HTH,


I used read.table("file.csv", header = TRUE, row.names = 1, sep=",",
strip.white = TRUE)
to read it in but I could easily only read in the matrix. Or I should say I
could make a file that has only the relevant data with no column or
observation names.
How would I then read it in as a matrix?


  *Vincent Davis
720-301-3003 *
vincent@vincentdavis.net
 my blog <http://vincentdavis.net> |
LinkedIn<http://www.linkedin.com/in/vincentdavis>


On Mon, Mar 15, 2010 at 11:32 PM, Joshua Wiley <jwiley.psych@gmail.com>wrote:

> Hello Vincent,
>
> The command to correlate two variables and a set is the same (see
> ?cor).  How have you read the data in?  If it is a matrix or data
> frame, you should be able to just use cor(name_of_your_matrix) and it
> will return the correlation matrix for all variables in your matrix or
> data frame.
>
> If you read each of your 230,000 variables in separately, you can
> combine them into a matrix or dataframe using cbind(variablename1, 2,
> etc.).
>
> HTH,
>
>
> Josh
>
>
>
> On Mon, Mar 15, 2010 at 10:12 PM, Vincent Davis
> <vincent@vincentdavis.net> wrote:
> > So I am very new to R. Have been using python for a project and need to
> > calculate the correlation coefficient matrix for my data set. the data is
> in
> > the range of 10-15 observations of 230,000 variables. ie the correlation
> > matrix would be 230,000X230,000  Using python and the numpy.corrcoef() I
> run
> > out of memory if I try to do this with more than ~30,000 variables.
> >
> > I was able to load the data into R, remember I am newbe so this is big :)
> >
> > I could find commands that would calculate the correlation between 2
> > variables but not for a set of variables. How do I do this?
> >
> > Am I going to be able to do this with R, I have the 64 bit version
> installed
> > and have access to an 8 core machine with 48GB of memory.
> >
> >
> >  *Vincent Davis
> > 720-301-3003 *
> > vincent@vincentdavis.net
> >  my blog <http://vincentdavis.net> |
> > LinkedIn<http://www.linkedin.com/in/vincentdavis>
> >
> >        [[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
> Senior in Psychology
> University of California, Riverside
> http://www.joshuawiley.com/
>

	[[alternative HTML version deleted]]

