[R] I need help in seeing the code

[peter dalgaard]

On 22 Jul 2014, at 08:31 , PIKAL Petr <petr.pikal at precheza.cz> wrote:

> Hi
> 
> Anyway. AFAIK your code looks OK to me, provided you want find the number of rows without NA in each file.
> 

...however, it is not clear to any of us whether the teacher has been instructing students to avoid expanding the vector of answers on each iteration, or maybe even teaching the semantics of lapply/sapply. It is also not clear that the response should contain the index number rather than the name of each file.

-pd

> Petr
> 
> 
>> -----Original Message-----
>> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
>> project.org] On Behalf Of Sarah Goslee
>> Sent: Tuesday, July 22, 2014 8:22 AM
>> To: Darius Mulia
>> Cc: r-help at r-project.org
>> Subject: Re: [R] I need help in seeing the code
>> 
>> Hi Darius,
>> 
>> This is the main R-help list. We don't know anything about your
>> Coursera class, including what your code is supposed to do. Not only
>> that, this list has a no homework policy.
>> 
>> You need to use the discussion group associated with your course, or
>> whatever materials it provides, to get assistance.
>> 
>> Sarah
>> 
>> On Tuesday, July 22, 2014, Darius Mulia <muliadarius at gmail.com> wrote:
>> 
>>> Hi there,
>>> 
>>> I am Darius and I am taking the R Programming course in Coursera. I
>>> have a problem that I had spent so much looking for the problem. I
>>> wrote my code and I believe that the code works perfectly fine
>> because
>>> it produces the result as what the course demanded. However, when I
>>> tried to submit it, it says that my code is wrong. I do believe I
>> make
>>> mistake, but I cannot seem to find it. the code is as follow:
>>> 
>>> Complete.R
>>> 
>>> complete <- function(directory, id = 1:332) {
>>>  file <- list.files(directory, full.names=TRUE)
>>>  nobs <- c()
>>>  for (i in id){
>>>    file1 <- read.csv(file[i])
>>>    nobs1 <- sum(complete.cases(file1))
>>>    nobs <- c(nobs, nobs1)
>>>    df <- data.frame(nobs)
>>>  }
>>>  return(data.frame(id,df))
>>> }
>>> 
>>> 
>>> Please give me a hint where I should look at.
>>> 
>>> Thank you very much for your time and concern. I look forward hearing
>>> back from you.
>>> 
>>> Sincerely,
>>> 
>>> Darius Mulia.
>>> 
>>>        [[alternative HTML version deleted]]
>>> 
>>> ______________________________________________
>>> R-help at r-project.org <javascript:;> 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.
>>> 
>> 
>> 
>> --
>> Sarah Goslee
>> http://www.stringpage.com
>> http://www.sarahgoslee.com
>> http://www.functionaldiversity.org
>> 
>>      [[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.
> 
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> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com