thanks,
I'am not veru used with R!!
regards
2010/8/21 Henrique Dallazuanna <www...@gmail.com>
> Adel,
>
> read.table return a data.frame, Gavin showed, you need pass which column
> will be plotted to hist.
> scan return a vector.
>
>
> On Sat, Aug 21, 2010 at 10:59 AM, Adel ESSAFI <adeless...@gmail.com>wrote:
>
>> It works fine.
>>
>> Could you explain to me why it did not worked for read.table?
>>
>> regards
>> Adel
>>
>>
>> 2010/8/21 Henrique Dallazuanna <www...@gmail.com>
>>
>> Try this:
>>>
>>> a <- scan('dureetasks.txt')
>>> hist(a)
>>>
>>> On Sat, Aug 21, 2010 at 10:32 AM, Adel ESSAFI <adeless...@gmail.com>wrote:
>>>
>>>> Hi
>>>> In fact, I searching for a simpler solution. I remember that I have
>>>> done
>>>> this without these functions (but I forgot)
>>>> simply, is there any function that "force" R to take variable a as
>>>> table ?
>>>>
>>>> Regards
>>>> Adel
>>>>
>>>>
>>>>
>>>> > a=read.table("dureetasks.txt")
>>>> > summary(a)
>>>> V1
>>>> Min. : 1
>>>> 1st Qu.: 77
>>>> Median : 2658
>>>> Mean : 25802
>>>> 3rd Qu.: 42558
>>>> Max. :1575814
>>>> > hist(a);
>>>> Error in hist.default(a) : 'x' must be numeric
>>>>
>>>>
>>>>
>>>> 2010/8/21 Gavin Simpson <gavin.simp...@ucl.ac.uk>
>>>>
>>>> > On Sat, 2010-08-21 at 11:37 +0200, Adel ESSAFI wrote:
>>>> > > Hi list
>>>> > >
>>>> > > I loaded the content of a file dureetasks.txt to variable a. This
>>>> file
>>>> > > contains an interger per line.
>>>> > > when I print a vector, it displays correctly.
>>>> > > however, when I try to print the histogram, I get this error
>>>> message
>>>> > >
>>>> > > > a=read.table("dureetasks.txt")
>>>> > > > hist(a)
>>>> > > Error in hist.default(a) : 'x' must be numeric
>>>> > >
>>>> > > Can you help please?
>>>> >
>>>> > class(a)
>>>> >
>>>> > str(a)
>>>> >
>>>> > > a <- data.frame(x = rnorm(100))
>>>> > > hist(a)
>>>> > Error in hist.default(a) : 'x' must be numeric
>>>> >
>>>> > So I suspect a is a data frame with a single column/variable. You need
>>>> > to pass hist the vector from /inside/ a that you want to plot:
>>>> >
>>>> > > with(a, hist(x))
>>>> >
>>>> > is one way to do that. Note that 'x' is used because that is the name
>>>> of
>>>> > the variable (component really) in a that I want to plot:
>>>> >
>>>> > > names(a)
>>>> > [1] "x"
>>>> >
>>>> > You will need to work out what the correct name is for the component
>>>> you
>>>> > want to plot. If there was no header to your text file then IIRC the
>>>> > variable will be named X1, but run names(a) and see what it returns.
>>>> >
>>>> > Because we don't have your dureetasks.txt file, there is no way for me
>>>> > to clarify that this is the problem and nothing else. If you can't
>>>> send
>>>> > us data at the very least use tools like str(a) and class(a), and
>>>> > head(a) to show us what the data look like.
>>>> >
>>>> > HTH
>>>> >
>>>> > G
>>>> >
>>>> > >
>>>> > > regards
>>>> > >
>>>> > >
>>>> > >
>>>> > >
>>>> > > ______________________________________________
>>>> > > R-help@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.
>>>> >
>>>> > --
>>>> > %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
>>>> > Dr. Gavin Simpson [t] +44 (0)20 7679 0522
>>>> > ECRC, UCL Geography, [f] +44 (0)20 7679 0565
>>>> > Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk
>>>> > Gower Street, London [w]
>>>> > http://www.ucl.ac.uk/~ucfagls/<http://www.ucl.ac.uk/%7Eucfagls/>
>>>> <http://www.ucl.ac.uk/%7Eucfagls/>
>>>>
>>>> > UK. WC1E 6BT. [w] http://www.freshwaters.org.uk
>>>> > %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
>>>> >
>>>> >
>>>>
>>>>
>>>> --
>>>> PhD candidate in Computer Science
>>>> Address
>>>> 3 avenue lamine, cité ezzahra, Sousse 4000
>>>> Tunisia
>>>> tel: +216 97 246 706 (+33640302046 jusqu'au 15/6)
>>>> fax: +216 71 391 166
>>>>
>>>> [[alternative HTML version deleted]]
>>>>
>>>>
>>>> ______________________________________________
>>>> R-help@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.
>>>>
>>>>
>>>
>>>
>>> --
>>> Henrique Dallazuanna
>>> Curitiba-Paraná-Brasil
>>> 25° 25' 40" S 49° 16' 22" O
>>>
>>
>>
>>
>> --
>> PhD candidate in Computer Science
>> Address
>> 3 avenue lamine, cité ezzahra, Sousse 4000
>> Tunisia
>> tel: +216 97 246 706 (+33640302046 jusqu'au 15/6)
>> fax: +216 71 391 166
>>
>
>
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>
--
PhD candidate in Computer Science
Address
3 avenue lamine, cité ezzahra, Sousse 4000
Tunisia
tel: +216 97 246 706 (+33640302046 jusqu'au 15/6)
fax: +216 71 391 166
[[alternative HTML version deleted]]
______________________________________________
R-help@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.
