Thank you.  I've tried what you're suggesting, at an earlier suggestion 
from another respondent, and I don't find my variable in any of lists 
ls() through ls(7).

I'm just going back to using R after being away from statistics for 
several years.  I'm thinking I might uninstall R, then reinstall it, and 
redo my work so far (I've kept the commands elsewhere), and avoid using 
"attach," as someone else has suggested.

David
On 12/31/2013 11:32 AM, Duncan Murdoch wrote:
> On 13-12-31 9:48 AM, David Parkhurst wrote:
>> Two or three respondents asked for an example of my problem.  Here's
>> what's happening to me now.  I can't reproduce how I got to this point,
>> though:
>>
>>   > ls()
>> [1] "All8"   "All8Sites"  "A"   "B"  "C"  "i"  "n"  "D"  "F"
>>   > X
>> Error: object 'X' not found
>>   > attach(All8Sites)
>>   > ls()
>> [1] "All8"  "All8Sites"  "A"  "B"  "C"  "i"  "n"  "D"  "F"
>>
>>
>> "X" is one of the variables in the data frame I attached in the third
>> command above, but it's not listed by >ls().  If I enter > X now, its
>> values ARE listed, but it's hiding somewhere.  What is happening here?
>> How can I get the variables in that data frame listed when I attach it?
>
> Use search() to see the search list.  Your dataframe will likely be in 
> position 2.  Use ls(2) to see the variables there.
>
> Duncan Murdoch
>


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