[R] Object not Found Error on a .csv file

Sarah Goslee sarah.goslee at gmail.com
Thu Jan 16 23:26:06 CET 2014

Hi Valerie,

Assuming GfullUA is a column of your data frame task2analyses, you
need to tell R where to look. It's trying to find an object called
GfullUA, and there isn't one.

Here are two ways:
with(task2analyses, cor(GfullUA, GFullUA))

cor(task2analyses$GfullUA, task2analyses$GFullUA)

You might want to read the Introduction to R that came with your
software installation.


On Thu, Jan 16, 2014 at 1:32 PM, Valerie Shalin <valerie at knoesis.org> wrote:
> Hello:
> I am a new user, running the latest version of R on my Mac.  I have started by reading a file with the read.csv command:
> task2analyses <- read.csv(file="GroupsWithRTsEqualN.csv",head=TRUE,sep=",")
> When I print it out in R, the file appears to be intact, with the proper headers.  Yet, when I run test commands like the following:
>> cor(GfullUA,GFullUA)
> I get back a message Error in is.data.frame(y) : object 'GFullUA' not found
> This is not the case for all of the variables in the file.  Some can be tested with is.numeric (or character). And some are read
> properly when I test the summary command.
> I have looked on Google, and have been unsuccessful in searching documentation.
> Thanks for any help,
> Valerie Shalin

Sarah Goslee

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