Thanks All!

On Thu, Dec 8, 2011 at 7:41 PM, Robert Baer <rbaer@atsu.edu> wrote:

> Hello All,
> This works,
> results <- read.table("plink.txt",T)
>
> while this doesn't.
> results <- read.table("plink.txt")
> --------------------
> The T is the value for the second parameter which you show from the help
> file printout you looked at to be header.  Thus, you are writing in short
> cut:
> results <- read.table("plink.txt", header=T)    # parameters are assigned
> by position when names are not explicit.
>
> Further, you should know that T is a variable with the value TRUE
> (boolean). Most people recommend you write it out to avoid unexpected
> reassignments of the variable T to something other than TRUE.  Thus, you
> should write:
> results <- read.table("plink.txt", header=TRUE)  # this is explicit of
> what works for plink.txt
>
> Finally, by header = TRUE, you are saying that the first row of your file
> contains the column headings for your data which apparently it does if it
> it works.  Hopes this helps you understand the help file which at least you
> took the time to read.  Good on you!
>
> HTH,
> Rob
>
>
>
>  Make sure your data frame contains columns CHR, BP, and P
>
> What does adding the "T" in read.table do? Which argument does this
> correspond to? I tried searching for it but didn't find the answer in:
>
>
>    read.table(file, header = FALSE, sep = "", quote = "\"'",
>               dec = ".", row.names, col.names,
>               as.is = !stringsAsFactors,
>               na.strings = "NA", colClasses = NA, nrows = -1,
>               skip = 0, check.names = TRUE, fill = !blank.lines.skip,
>               strip.white = FALSE, blank.lines.skip = TRUE,
>               comment.char = "#",
>               allowEscapes = FALSE, flush = FALSE,
>               stringsAsFactors = default.stringsAsFactors(),
>               fileEncoding = "", encoding = "unknown")
>
>
> Could someone please explain?
> Thanks
> P
>
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>
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>
>
> ------------------------------**------------
> Robert W. Baer, Ph.D.
> Professor of Physiology
> Kirksville College of Osteopathic Medicine
> A. T. Still University of Health Sciences
> 800 W. Jefferson St.
> Kirksville, MO 63501
> 660-626-2322
> FAX 660-626-2965
>

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