On Fri, Nov 14, 2008 at 05:05:32PM +0100, Chang Jia-Ming wrote:
> I want to write a function to plot a picture for each inputting file like
> the following example.
> plot_test <- function(f1,f2)
> {
> plot_file(f1);
> plot_file(f2);
> }
>
> However, the above function just could plot two input file.
> If the number of input file is not sure, it could be 2, 3 or more.
> plot_test(f1, f2)
> plot_test(f1, f2, f3) .... or more
> I would like to run function, for instance "plot_file", for each input file.
> How could I do?
> Is there any solution like argv and argc in C to read arguments in R?
I would make the function accept only one argument which would be
a vector of filenames:
foo <- function(files) {
for (filename in files) {
do_something(filename)
}
}
foo( c('File1', 'AnotherFile', 'File3') )
Alternatively, you could use "...":
foo <- function(...) {
for (filename in list(...)) {
do_something(filename)
}
}
foo( 'File1', 'AnotherFile', 'File3')
cu
Philipp
--
Dr. Philipp Pagel
Lehrstuhl für Genomorientierte Bioinformatik
Technische Universität München
Wissenschaftszentrum Weihenstephan
85350 Freising, Germany
http://mips.gsf.de/staff/pagel
______________________________________________
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.
