[R] how to process this in R

[Sarah Goslee]

Hi,

You might want to check out ?system ?read.table and ?subset
and also ?sub and maybe ?strsplit

Reading one of the good intro to R documents out there would
also help you get started with this fairly straightforward task

Beyond that, you did a good job of explaining your problem, but
this is one of the cases where knowing your OS would be
awfully useful.

Sarah

On Wed, Jul 7, 2010 at 1:49 PM, jd6688 <jdsignature at gmail.com> wrote:
>
> Here are what i am going to accomplish:
>
> I have 400 files named as xxx.txt. the content of the file looks like the
> following:
>
>    name    count
>
> 1. aaa     100
> 2. bbb    2000
> 3. ccc    300
> 4. ddd   3000
>
> ........
> more that 1000 rows in each files.
>
> these are the areas i need help:
> 1. how can i only read in the files with the string patterns ggg or fff as
> part of the file names?
>  for instance, I only need the file names with the ggg or fff in it
>     xxxxx_ggg_yyyyy_1.txt
>     yyyy_fff_yyyy_xxx.txt
>
>    i don't need to read in the files, such as xxxx_aaa_yyyy.txt
>
> 2.how cam rename the files:
>
>  for instance: xxxxx_ggg_yyyyy_1.txt======>changed to ggg1a.txt
>
>
> 3.after the files read in, how can i only keep the rows with the aaa and
> bbb, everything elses show be removed from the files, but the files still
> remain the same file name?
>
>   for instance, in the xxxxx_ggg_yyyyy_1.txt file, it shouls looks like:
>  name    count
>
> 1. aaa    100
> 2. bbb    2000
> 3. aaa    300
> 4. bbb    400
>
>
> Thanks so lot, I am very new to R, I am looking forward to any helps from
> you.
>
> --

-- 
Sarah Goslee
http://www.functionaldiversity.org