[R] Question concerning Loading large Data Sets

Spencer Brackett @pbr@ckett20 @end|ng |rom @@|ntjo@ephh@@com
Mon May 6 01:14:53 CEST 2019


In case there is any confusion... "~/Vakul's GBM code" was set up in the
working directory (via setwd) as the folder in which the file 'mapper.txt'
is contained... thereby making the "~/Vakul's GBM code/mapper.txt" as

Should I perhaps reset my working directory to the file I'm trying to
access, exclusively?

On Sun, May 5, 2019 at 7:09 PM Spencer Brackett <
spbrackett20 using saintjosephhs.com> wrote:

> Good evening,
> I am attempting to reproduce the following lines of code...
> library(data.table)
> anno = as.data.frame(fread(file = "file name", sep ="\t", header = T))
> The following is my attempt...
> > library(data.table)
> > mapper <- read.delim("~/Vakul's GBM code/mapper.txt")
> >   View(mapper)
> ## fread() was used as datset is quite large ##
> > GBM_meth <- fread("~/Vakul's GBM code/mapper.txt")
> > anno = as.data.frame(fread(file = "~/Vakul's GBM code/mapper.txt", sep
> ="\t", header = T))
> Via View(mapper), I can view the dataset contained within the "mapper.txt"
> file, but the >anno = as.data.frame portion does not trigger any sort of
> 'response' on R and simply brings my cursor down to the next line, ready
> for further implementation. Should I be getting some sort of output from R,
> and if so what should I expect?
> I apologize in advance for any errors in the summary of the above script
> Best,
> Spencer Brackett

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