On 1/29/2006 1:24 PM, Gabor Grothendieck wrote:
> Normally one expects stdin to be the default on command line
> programs and something like file.choose to be the default on GUI
> programs and this would break that expectation.
We don't currently meet that expectation, so I don't think it would make
things any worse. As I mentioned to Brian, I wouldn't change the
default for scan() (which is stdin everywhere). I haven't done a
complete survey yet, but after looking at a few, I think the rules I
would use are these:
- the function should use the filename argument to find an existing file
- it should not already have a default
- it should be something that would commonly be used interactively
Ones I would change which currently give an error with no filename:
read.table() and friends
dget()
read.dcf()
source()
read.ftable()
tkpager()
md5sum()
Rd_parse()
Ones I probably wouldn't touch:
unz()
file.create(), etc.
file() gives a temporary file for writing
dput(), write.dcf() write to the console
dev2bitmap(), bitmap()
file.show() - which might be called with an empty file list, which we
should treat as a no-op
Ones I'm not sure about right now, because they're relatively obscure:
sys.source()
shell.exec()
Duncan Murdoch
>
> If there were a GUI version of read.table then that would reasonbly
> have file.choose as the default.
>
> On 1/29/06, Duncan Murdoch <[EMAIL PROTECTED]> wrote:
>> On 1/29/2006 11:28 AM, oliver wee wrote:
>>> hi,
>>>
>>> Sorry again to bother you, but I got the file.choose()
>>> to work. Thanks for the help there.
>>>
>>> Unfortunately I encountered a new problem. After I
>>> selected the data, I got this error message:
>>>
>>> Error in scan(file = file, what = what, sep = sep,
>>> quote = quote, dec = dec, :
>>> line 1 did not have 11 elements
>>> In addition: Warning message:
>>> incomplete final line found by readTableHeader on
>>> 'D:\Oliver\Professional\Studies\Time Series
>>> Analysis\spdc2693.data.txt'
>>>
>>> my time series data looks like this...
>>>
>>> ------------
>>> Standard and Poor's 500 Index closing values from 1926
>>> to 1993.
>>>
>>> Date Index
>>> 260101 12.76
>>> 260108 12.78
>>> 260115 12.52
>>> 260122 12.45
>>> 260129 12.74
>>> 260205 12.87
>>> 260212 12.87
>>> 260219 12.74
>>> 260226 12.18
>>> 260305 11.99
>>> 260312 12.15
>>> 260319 11.64
>>> 260326 11.46
>>> ...
>>> (and so on)
>>> ----------
>>>
>>> Should I insert additional attributes besides header =
>>> TRUE?
>> Yes, you need to tell it to skip over the lines of the comment at the
>> start of the file. That looks like 3 lines (including the blank line),
>> so add skip=3 to your read.table call.
>>
>> Duncan Murdoch
>>
>>> thanks.
>>>
>>>
>>> --- Duncan Murdoch <[EMAIL PROTECTED]> wrote:
>>>
>>>> On 1/29/2006 10:26 AM, oliver wee wrote:
>>>>> hello, I have just started using R for doing a
>>>> project
>>>>> in time series...
>>>>>
>>>>> unfortunately, I am having trouble using the
>>>>> read.table function for use in reading my data
>>>> set.
>>>>> This is what I'm getting:
>>>>> I inputted:
>>>>> data <-
>>>>> read.table("D:/Oliver/Professional/Studies/Time
>>>> Series
>>>>> Analysis/spdc2693.data", header = TRUE)
>>>> Generally it's easier to use the dialogs to specify
>>>> the filename, e.g.
>>>>
>>>> read.table(file.choose(), header=TRUE)
>>>>
>>>> Then you shouldn't get the "no such file" message.
>>>> If you do, you
>>>> should check whether other programs (e.g. notepad)
>>>> can open the file.
>>>> Maybe you don't have read permission?
>>>>
>>>> Duncan Murdoch
>>>>
>>>>> I got:
>>>>> Error in file(file, "r") : unable to open
>>>> connection
>>>>> In addition: Warning message:
>>>>> cannot open file
>>>> 'D:/Oliver/Professional/Studies/Time
>>>>> Series Analysis/spdc2693.data', reason 'No such
>>>> file
>>>>> or directory'
>>>>>
>>>>> as I am just a novice programmer, I really would
>>>>> appreciate help from you guys. Is there a need to
>>>>> setpath in R, like in java or something like
>>>> that...
>>>>> I am using the windows version btw.
>>>>>
>>>>> I have also tried to put the file in the work
>>>>> directory of R, so that I only typed
>>>>> data <- read.table("spdc2693.data", header = TRUE)
>>>>> Again, it won't work, with the same error message.
>>>>>
>>>>> I would appreciate any help. thanks again.
>>>>>
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>>>>
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