R help - Jan 2002 - handle a sequence of strings with for loop

Hi all,

I have a string sequence:
"my00", "my01", "my02",...,"my99". 
I would like to process them one by one use a for loop like:

for(i in 0:99){
	str <- paste("my", i, sep="")
	print(str)
}

But this only works with string "my10" to "my99". 
In Python, this problem can be solved by string formating zero fill such as 
print "%02d", i;
which will give 
00, 01, ...,09,10,...,99

I wonder if R has similar solutions?

Regards,
Jonathan


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On Mon, 28 Jan 2002 jonathan_li at agilent.com wrote:
> Hi all,
>
> I have a string sequence:
> "my00", "my01", "my02",...,"my99".
> I would like to process them one by one use a for loop like:
>
> for(i in 0:99){
> 	str <- paste("my", i, sep="")
> 	print(str)
> }
>
> But this only works with string "my10" to "my99".
> In Python, this problem can be solved by string formating zero fill such as
> print "%02d", i;
> which will give
> 00, 01, ...,09,10,...,99
>
> I wonder if R has similar solutions?
?formatC. As in
> formatC(9, width=2, flag="0")
[1] "09"


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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jonathan_li at agilent.com wrote:
> 
> Hi all,
> 
> I have a string sequence:
> "my00", "my01", "my02",...,"my99".
> I would like to process them one by one use a for loop like:
> 
> for(i in 0:99){
>         str <- paste("my", i, sep="")
>         print(str)
> }
> 
> But this only works with string "my10" to "my99".
> In Python, this problem can be solved by string formating zero fill such as
> print "%02d", i;
> which will give
> 00, 01, ...,09,10,...,99
> 
> I wonder if R has similar solutions?

Details in ?formatC

In your case:
  formatC(i, width=2, flag=0)

Uwe
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