[R] Reading data

[David Winsemius]

On Oct 28, 2009, at 11:46 AM, Val wrote:

> Val, please take it slow, you are missing basic stuff here.
>>
>> (1) Windows Explorer may hide extensions; the 'Type' column should
>> read 'R file' anyway.
>>
>
> *   Yes I looked at it and it only shows type.  To check I downloaded
> another script with   R extension "test.R" and the type column shows  
> the
> exact extension(i.e., test.R).
> *
>
>
>>
>> (2) Script files are included in your workspace with the comand  
>> source().
>> Please type ?source for details.
>>
>> (3) You should call files with their path and extensions (in your  
>> case
>> 'Rossi.R')
>> I can open the script using this command,
>>
>      *  Rossi <- read.table( file.choose(),header=T)
> *
> *Why I  can not open with this command?*
>
> Rossi <- read.table("C:/Documents and Settings/Val/My
> Documents/R_data/prd/Rossi.dat",header=T)
>
> *David,
> *You suggested to use ,
>
> Rossi <- read.table(paste("C:/Documents and Settings/Val/My
> Documents/R_data/prd", "Rossi.dat", sep="/"), header=T)
>
> This is not working as well  I got the same error message.

H0: there is no file by that name in that directory.
HA: (or Windows and the email process is mucking up the spaces in the  
path). I do not "see" a space between "My" and "Documents" in the  
email representation.

  I originally asked and you never answered...HOW did your save  
"Rossi" or "Rossi.dat"? Code and output ... we want all your code and  
console output!

So, please reproduce complete code and complete error messages. There  
are often details in those messages that new users are unable to decode.


>
> Any help is highly appreciated
>
> Val
>
>
>
>
>
>
>
>
>
>> Hope the above help,
>>
>>
>> On Wed, Oct 28, 2009 at 3:55 PM, Val <valkremk at gmail.com> wrote:
>>> The working directory is
>>>
>>>> getwd()
>>> [1] "C:/Documents and Settings/Val/My Documents"
>>>
>>> The data file(Rossi.dat) and the script(Rossi.R) are in
>>> "C:/Documents and Settings/Val/My Documents/R_data/prd"
>>>
>>> How should I write to read the file?
>>>
>>>   source(???)   # what should be included here?
>>>
>>> Rossi <- read.table('Rossi.dat',header=T)
>>>>
>>>
>>> I still  got the same error message.
>>>
>>> Error in file(file, "r") : cannot open the connection
>>> In addition: Warning message:
>>> In file(file, "r") : cannot open file 'Rossi': No such file or  
>>> directory
>>>
>>>
>>> Thanks
>>> Val
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Wed, Oct 28, 2009 at 10:32 AM, David Winsemius <
>> dwinsemius at comcast.net>wrote:
>>>
>>>>
>>>> On Oct 28, 2009, at 10:04 AM, Val wrote:
>>>>
>>>> Hi User's,
>>>>>
>>>>> This might be a simple question but it is giving me a hard time  
>>>>> as I am
>> a
>>>>> new user.
>>>>> I installed  R version 2.9.2 (2009-08-24)
>>>>>
>>>>> 1. I just copied a short script from Fox (2002) as a practice    
>>>>> and
>> wanted
>>>>> to save it as Rossi.R.
>>>>>
>>>>
>>>> How?
>>>>
>>>>
>>>> The system saved it without complain but when I looked at  using a
>> windows
>>>>> explorer  it is not *.R file but only Rossi. Why this is  
>>>>> happening?
>>>>>
>>>>
>>>> If you were to include the code, we perhaps could tell you. In its
>> default
>>>> mode Windows may be hiding the extension from you. (Or possibly  
>>>> because
>> R
>>>> does not postpend file types and (I am now guessing here about a  
>>>> package
>> I
>>>> have not used and don't even know if you are) neither does Rcmdr.)
>>>>
>>>>
>>>>
>>>>
>>>>> 2. the script and the data files are in the same working  
>>>>> directory.
>> When I
>>>>> run the following script
>>>>>
>>>>> Rossi <- read.table('Rossi',header=T)
>>>>>>
>>>>>
>>>> No path specification. And ??? thought you said it was a script,  
>>>> which
>>>> would have been loaded with source()
>>>>
>>>>
>>>>  Rossi[1:5,1:10]
>>>>>>
>>>>>
>>>> But this suggests you are using it as data. ????
>>>>
>>>> What do you get when your type this:
>>>>
>>>> getwd()
>>>>
>>>> the working directory is > getwd()
>>> [1] "C:/Documents and Settings/val/My Documents"
>>>> getwd()
>>>
>>>
>>>
>>>
>>>
>>>> Maybe if you tried (untested)... Nah ... not going to do further
>> guessing.
>>>> Read the posting guide and supply the missing elements.
>>>>
>>>>
>>>>
>>>>
>>>>> I got the following error messages
>>>>>
>>>>>          Error in file(file, "r") : cannot open the connection
>>>>>          In addition: Warning message:
>>>>>          In file(file, "r") : cannot open file 'Rossi': No such  
>>>>> file
>> or
>>>>> directory
>>>>>
>>>>>> Rossi[1:5,1:10]
>>>>>>
>>>>>         Error: object 'Rossi' not found
>>>>>
>>>>>
>>>>> Thank you for your help in advance
>>>>>
>>>>> Val
>>>>>
>>>> --
>>>>
>>>> David Winsemius, MD
>>>> Heritage Laboratories
>>>> West Hartford, CT
>>>>
>>>>
>>>
>>>       [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> R-help at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

David Winsemius, MD
Heritage Laboratories
West Hartford, CT