Check you input data.  You have some non-numeric characters in columns where
you are expecting numerics.

The parameter is

stringsAsFactors=FALSE

You had it spelt wrong.  After reading in your data, do the conversion to
numeric and then examine which locations contain NA; this will point you to
the problem line in your input.  Also if you use 'colClasses', I think it
will error the offending line.

On Mon, May 3, 2010 at 7:21 PM, vincent.deluard <
vincent.deluard@trimtabs.com> wrote:

>
> Hi John,
>
>
>
> Thanks for responding so quickly.
>
>
>
> So I tried:
>
>
>
> Test2[1:3,1:3])
>
> 'data.frame':   3 obs. of  3 variables:
>
>  $ Date      : Factor w/ 2480 levels "A UN Equity",..: 1033 2396 613
>
>  $ X4.20.2010: Factor w/ 1994 levels "0.24","0.33",..: 953 497 1814
>
>  $ X4.19.2010: Factor w/ 1957 levels "0.24","0.33",..: 933 486 1779
>
>
>
> But I am not sure how to interpret it.
>
>
>
> The stringAsFactors = False option did not work either.
>
>
>
> > Test2 <- read.table('Test2.csv', sep=",", header=TRUE,
> stringAsFactors=FALSE)
>
> Error in read.table("Test2.csv", sep = ",", header = TRUE, stringAsFactors
> = FALSE) :
>
>  unused argument(s) (stringAsFactors = FALSE)
>
>
>
> If you want to look at it, I attach a section of my data.
>
>
>
> Right now if I type:
>
> > Test2[2,2]+1
>
> Which should return 19.72
>
>
>
> I get
>
> [1] NA
>
> Warning message:
>
> In Ops.factor(Test2[2, 2], 1) : + not meaningful for factors
>
>
>
> Your help is SO appreciated!
>
>
>
> --------------------------------------------
>
> Vincent Deluard
>
>  <mailto:Vincent.Deluard@TrimTabs.com> Vincent.Deluard@TrimTabs.com
>
> Global Equity Strategist, CFA Charter Award Pending
>
> TrimTabs Investment Research
>
> 40 Wall Street, 28th Floor
>
> New York, NY 10005
>
> Phone: (+1) 646-512-5616
>
>
>
> From: John Kane-2 [via R] [mailto:
> ml-node+2124731-1168690456-90534@n4.nabble.com<ml-node%2B2124731-1168690456-90534@n4.nabble.com>
> ]
> Sent: Monday, May 03, 2010 6:51 PM
> To: vincent.deluard
> Subject: Re: / Operator not meaningful for factors
>
>
>
>  I think that you are correct.  R has the annoying habit of converting
> character data to factors when you don't want it
> to while it is importing data.  This is because the in the option
> "stringsAsFactors" is set to TRUE for some weird
> historical reasons.
>
> Try the command str(insert name of data) and see what happens.  It should
> show you which columns of data are being
> treated as factors.
>
> You can convert the back to character or to numeric.  See the FAQ Part 7
> "How do I convert factors to numeric? " or you
> can use the String as options command in the read.table to FALSE
>
> Something like this should work, I think, but it's not tested
> read.table("C:/rdata/trees.csv", stringsAsFactors=FALSE)
>
>
>
>
>
> --- On Mon, 5/3/10, vincent.deluard <[hidden email]> wrote:
>
>
> > From: vincent.deluard <[hidden email]>
> > Subject: Re: [R] / Operator not meaningful for factors
> > To: [hidden email]
> > Received: Monday, May 3, 2010, 6:22 PM
> >
> > Hi there,
> >
> > This will sound very stupid because I just started using R
> > but I see you had
> > similar problems.
> >
> > I just loaded a very large dataset (2950*6602) from csv
> > into R. The format
> > is ticker=row, date=column.
> > Every time I want to compute basic operations, R returns
> > "In Ops.factor: not
> > meaningful for factors"
> >
> > I believe it is because R does not read the data as numbers
> > but I am not
> > sure. Can anybody help?
> >
> > Thanks!
> > --
> > View this message in context:
> http://r.789695.n4.nabble.com/Operator-not-meaningful-for-factors-tp791563p2124697.html
> > Sent from the R help mailing list archive at Nabble.com.
> >
> > ______________________________________________
> > [hidden email]
> > mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> > and provide commented, minimal, self-contained,
> > reproducible code.
> >
>
>
> ______________________________________________
> [hidden email] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>
>
>
>  _____
>
> View message @
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> To unsubscribe from Re: / Operator not meaningful for factors, click
> < (link removed)
> AwNTU4Mzk3>  here.
>
>
>
>
>
> --
> View this message in context:
> http://r.789695.n4.nabble.com/Operator-not-meaningful-for-factors-tp791563p2124759.html
> Sent from the R help mailing list archive at Nabble.com.
>
>        [[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<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?

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