R help - Sep 2008 - for-loop for opening a series of files

Hello,

I am fairly new to R programming.  I have a series of netcdf files that 
I am able to open one at a time using open.ncdf.  I want to write this 
into an R script so that I can successively open each file by date in a 
for-loop.  Any suggestions?

Thanks

Brian Pettegrew

-- 
Brian Pettegrew
Research Associate
Cooperative Institute for Environmental Sciences
NOAA/ESRL/Global Systems Division
Boulder, CO  
Phone: (303) 497-4129
E-mail: Brian.P.Pettegrew at noaa.gov

Hi, you may use list.files('dir-of-your-files', ...) to get the paths
of all the files, and use file.info() to get the date attribute, then
order them by date, and finally in a loop

for(i in paths-of-your-files){
open.ncdf(i, ...)
...
}

Regards,
Yihui
--
Yihui Xie <xieyihui at gmail.com>
Phone: +86-(0)10-82509086 Fax: +86-(0)10-82509086
Mobile: +86-15810805877
Homepage: http://www.yihui.name
School of Statistics, Room 1037, Mingde Main Building,
Renmin University of China, Beijing, 100872, China



On Thu, Sep 18, 2008 at 5:13 AM, Brian Pettegrew
<Brian.P.Pettegrew at noaa.gov> wrote:
> Hello,
>
> I am fairly new to R programming.  I have a series of netcdf files that I
am
> able to open one at a time using open.ncdf.  I want to write this into an R
> script so that I can successively open each file by date in a for-loop. 
Any
> suggestions?
>
> Thanks
>
> Brian Pettegrew
>
> --
> Brian Pettegrew
> Research Associate
> Cooperative Institute for Environmental Sciences
> NOAA/ESRL/Global Systems Division
> Boulder, CO  Phone: (303) 497-4129
> E-mail: Brian.P.Pettegrew at noaa.gov
>
>