I think what you want is something like this
system(sprintf('C:/Users/.../dssp-2.0.4-win32.exe -i data%d.txt -o
data%d.dssp', i, i))
On Fri, Feb 15, 2013 at 12:33 PM, Esam Tolba <eato...@gmail.com> wrote:
> hi all
> I am using r (2.15.2) in windows 7 32bit
> I want to execute an external program from r console. the program is a
> command line program which needs the following format to start
> C:/Users/.../dssp-2.0.4-win32.exe -i
> data_1.txt -o data_1.dssp
> I used the system command as:
> system
> ('C:/Users/.../dssp-2.0.4-win32.exe -i data.txt -o data.dssp')
> it worked.
> Now I want to use the program on a list of files, so for that I used a
> for loop and sprintf
> for (i in 1:10) {
> system
> ('C:/Users/.../dssp-2.0.4-win32.exe -i sprintf("data_%s.txt",i) -o
> sprintf("data_%s.dssp",i)')
> but I received the following error
> No such file
> Warning message:
> running command 'C:/Users/.../dssp-2.0.4-win32.exe
> -i sprintf("data_%s.txt",i) -o sprintf("data_%s.dssp",i)' had status 1
>
>
> SO, what is my mistake? and is there a way to update the input file
> name based on the for loop counter
>
> Best Regards,
>
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--
Jim Holtman
Data Munger Guru
What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.
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