Please do keep your replies on the R help list.
On Tue, Aug 7, 2012 at 4:17 PM, hafida goual <hafida...@hotmail.fr> wrote:
>
> HI
>>
>>I know my questions are debile, but please I'm debutante.
>
>>> source("functionaj")
> Error in file(filename, "r", encoding = encoding) :
> cannot open the connection
> In addition: Warning message:
> In file(filename, "r", encoding = encoding) :
> cannot open file 'functionaj': No such file or directory
>
>> source(functionaj)
> Error in source(functionaj) : object 'functionaj' not found
>
>> source('functionaj')
> Error in file(filename, "r", encoding = encoding) :
> cannot open the connection
> In addition: Warning message:
> In file(filename, "r", encoding = encoding) :
> cannot open file 'functionaj': No such file or directory
>
Unlike Matlab, R makes no connection between the name of a function
and the name of the file wherein it is defined.
Say I am at my shell prompt and I create a trivial file like so:
$ echo "test <- function(x) return(x)" > test.R
I can then start R and see if my function exists:
R> test(3) # Error because test() is not yet defined.
But then I can source my file
R> source("test.R")
R> test(3) # it works!
[1] 3
But the name doesn't have to make any sense: back at the shell prompt
echo "test2 <- function(x) return(x + 1)" > flub.R
now in R
R> source("flub.R")
R> flub(3) # Does not exist
R> test2(3) # Works as expected.
[1] 4
If you are on Windows, the command
source(file.choose())
might be of help.
Hope this helps clarify things,
Michael
>>THANKS AGAIN AGAIN
> hafida
>
______________________________________________
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.
