R help - Oct 2010 - Trouble accessing cov function from stats library

Dear all

I am trying to use the cov function in the stats library. I have no problem
using this function from the console. However, in my R script I received a
"function not found" message. Then I called stats::cov(...) and
received an error message that the function was not exported. Then I tried
stats:::cov (three colons) and received the error

Error in get(name, envir = asNamespace(pkg), inherits = FALSE) :
  object 'Cov' not found
I am also importing the ltm library, though I'm not aware of a cov function
in ltm that could be causing a conflict. Any suggestions?

Thanks

Barth


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On Oct 11, 2010, at 10:27 AM, Barth B. Riley wrote:
> Dear all
>
> I am trying to use the cov function in the stats library. I have no  
> problem using this function from the console. However, in my R  
> script I received a "function not found" message. Then I called  
> stats::cov(...) and received an error message that the function was  
> not exported. Then I tried stats:::cov (three colons) and received  
> the error
>
> Error in get(name, envir = asNamespace(pkg), inherits = FALSE) :
>  object 'Cov' not found
You are misspelling it. R is case-sensitive.
> I am also importing the ltm library, though I'm not aware of a cov  
> function in ltm that could be causing a conflict. Any suggestions?
>
> Thanks
>
> Barth

David Winsemius, MD
West Hartford, CT

Note that R is case sensitive, so cov and Cov are different.
>>> 
From: "Barth B. Riley" <bbriley@chestnut.org>
To:"r-help@r-project.org" <r-help@r-project.org>
Date: 12/Oct/2010 3:31a
Subject: [R] Trouble accessing cov function from stats library
Dear all

I am trying to use the cov function in the stats library. I have no problem
using this function from the console. However, in my R script I received a
"function not found" message. Then I called stats::cov(...) and
received an error message that the function was not exported. Then I tried
stats:::cov (three colons) and received the error

Error in get(name, envir = asNamespace(pkg), inherits = FALSE) :
  object 'Cov' not found
I am also importing the ltm library, though I'm not aware of a cov function
in ltm that could be causing a conflict. Any suggestions?

Thanks

Barth


________________________________
PRIVILEGED AND CONFIDENTIAL INFORMATION
This transmittal and any attachments may contain PRIVILEGED AND
CONFIDENTIAL information and is intended only for the use of the
addressee. If you are not the designated recipient, or an employee
or agent authorized to deliver such transmittals to the designated
recipient, you are hereby notified that any dissemination,
copying or publication of this transmittal is strictly prohibited. If
you have received this transmittal in error, please notify us
immediately by replying to the sender and delete this copy from your
system. You may also call us at (309) 827-6026 for assistance.

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