R help - Dec 2011 - Writing a function, want a string argument to define the name of the excel sheet to be called

My question is this: is there a way I can make one of the arguments of the
function be a string the user can enter, and then have that be the excel
filename? ie,

foo <- function(x,y,NAME){

#make a matrix with x rows and y cols
M <- matrix(nrow=x,ncol=y)
#write the matrix
write.table(M, file = "result.csv",append=TRUE, sep = ",") 
}

I've had a look but I couldn't find help for this particular problem and
it's one I'd like to solve, so I can change make several excel files to
solve the analysis my actual function does.

Thank you very much,
Aodh?n

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Sure, change your example as follows and then you can pass the name properly:

foo <- function(x,y,NAME = "filename.csv"){

#make a matrix with x rows and y cols
M <- matrix(nrow=x,ncol=y)
#write the matrix
write.table(M, file = NAME,append=TRUE, sep = ",") 
}

Bryan
****************
Prof. Bryan Hanson
Dept of Chemistry & Biochemistry
DePauw University
Greencastle IN 46135 USA
academic.depauw.edu/~hanson/deadpezsociety.html
github.com/bryanhanson
academic.depauw.edu/~hanson/UMP/Index.html

On Dec 1, 2011, at 8:43 AM, AOLeary wrote:
> My question is this: is there a way I can make one of the arguments of the
> function be a string the user can enter, and then have that be the excel
> filename? ie,
> 
> foo <- function(x,y,NAME){
> 
> #make a matrix with x rows and y cols
> M <- matrix(nrow=x,ncol=y)
> #write the matrix
> write.table(M, file = "result.csv",append=TRUE, sep =
",")
> }
> 
> I've had a look but I couldn't find help for this particular
problem and
> it's one I'd like to solve, so I can change make several excel
files to
> solve the analysis my actual function does.
> 
> Thank you very much,
> Aodh?n
> 
> --
> View this message in context:
http://r.789695.n4.nabble.com/Writing-a-function-want-a-string-argument-to-define-the-name-of-the-excel-sheet-to-be-called-tp4128384p4128384.html
> Sent from the R help mailing list archive at Nabble.com.
> 
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> 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.

Thank you very much, that does exactly what I want it to! :)

Aodh?n

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