This is pretty obviously difficulty in completing an assignment for a Coursera
task. You are asked by the Course Director of the entry-level R course to post
your questions to a website established for the purpose of requesting
assistance. Rhelp is a text-only mailing list (although you might have been
duped into thinking that it was a website by the Nabble mirror.) Rhelp has a
"no homework" policy.
--
David.
On Aug 15, 2015, at 10:06 AM, Nikita Dinger wrote:
> I am having a problem in opening the excel files in specdata folder.
>
> I have completed coding the R program for the assignment but when I run the
> following commands in the R console,
>
> *source("pollutantmean.R")*
> *> pollutantmean("specdata", "nitrate", 23)*
>
> I get an error message stating
>
> *Error in file(file, "rt") : cannot open the connection*
> *In addition: Warning message:*
> *In file(file, "rt") :*
> * cannot open file 'specdata/023.csv': No such file or directory*
>
> I tried everything and reset my Working Directory to
>
>
> *C:/Users/acer/My Documents/specdata/rprog-data-specdata/specdata*
>
> After the last specdata folder are all the excel sheets numbered 001 to 332.
>
> I searched the internet and all other options available, and got a solution
> to open it using the following command:
>
> *df <- read.csv("specdata/001.csv")*
>
>
> This generated the following error message
>
> *Error in file(file, "rt") : cannot open the connection*
> *In addition: Warning message:*
> *In file(file, "rt") :*
> * cannot open file 'specdata/001.csv': No such file or directory*
>
> I have tried various other commands also such as
>
>
> *path <- c(paste("./",directory, "/",formatC(id[i], width=3,
> flag=0),".csv",sep=""))*
>
> However, all the commands show some error.
>
> What shall I do?
> I am using the 3.2.1 version of R on a Windows 8 laptop.
>
> Regards,
> Nikita Dinger
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA
______________________________________________
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