[R] Reading parts of data files

[jim holtman]

?file   -  how to use connections
?read.table    'skip' parameter, colClasses to only read columns you want

That is not a large file.  Read the whole thing in and then extract
the data you need.

On Tue, Nov 23, 2010 at 6:05 AM, fbielejec <fbielejec at gmail.com> wrote:
> Dear,
>
> I'm doing analysis where I need to work on relatively large (50-60 MB)
> text files, though I'm really interested only in parts with binary
> variables (named indicators1, indicators2, ... etc.)
>
> Every text file contains other numeric columns, but not always the same
> and not always in the same order - therefore I would rather need a
> method connecting to file and reading only colums with respect to name
> pattern (ie indicators + number). That should speed things up (now I
> have to clean data by hand) but also leave less memory footprint. Could
> You point me towards sth?
>
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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?