Hi,
I'm new in the mailing list but I would appreciate if you could help
me with this:
I have a big matrix from where I need to delete specific rows. The
second entry on these rows to delete should match any string within a
list (other file with just one column).
Thank you so much!
Laura
___
Laura Rodriguez Murillo wrote:
> Hi,
>
> I'm new in the mailing list but I would appreciate if you could help
> me with this:
> I have a big matrix from where I need to delete specific rows. The
> second entry on these rows to delete should match any string within a
> list (other file with just one
Thank you. I think grep would do it, but the list of expressions I
need to match is too long so they are stored in a file. So the
question would be how I can tell R to look into that file to look for
the expressions that I want to match.
Thank you again for your help
Laura
2009/2/6 Wacek Kusnier
Laura Rodriguez Murillo wrote:
> Thank you. I think grep would do it, but the list of expressions I
> need to match is too long so they are stored in a file.
what does 'too long' mean?
> So the
> question would be how I can tell R to look into that file to look for
> the expressions that I want
yep, it definitely sounds like a work for perl, but I don't know perl
(unfortunately). I'm still stuck with this so I'm giving more details
in case it helps:
I have file A with 382 columns and 30 rows. There are rows where
only the entry in first column is duplicated in other rows. In these
ca
I regularly deal with a similar pattern at work. People send me these
big long .csv files and I have to run them through some pattern analysis
to decide which rows I keep and which rows I kill off.
As others have mentioned, Perl is a good candidate for this task.
Another option would be a quick SQ
Hi Laura,
You might want to read the manual on Data importation and exportation on
the cran webpage http://cran.r-project.org/
Otherwise, have a look at ?read.table.
Sebastien
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Thank you so much! I finally got it.
Laura
2009/2/6 Sebastien Bihorel :
> Hi Laura,
>
> You might want to read the manual on Data importation and exportation on the
> cran webpage http://cran.r-project.org/
> Otherwise, have a look at ?read.table.
>
> Sebastien
>
Andrew Choens wrote:
> I regularly deal with a similar pattern at work. People send me these
> big long .csv files and I have to run them through some pattern analysis
> to decide which rows I keep and which rows I kill off.
>
> As others have mentioned, Perl is a good candidate for this task.
> An
Interesting. Thanks.
On Sat, 2009-02-07 at 02:36 +0100, Wacek Kusnierczyk wrote:
> Andrew Choens wrote:
> > I regularly deal with a similar pattern at work. People send me these
> > big long .csv files and I have to run them through some pattern analysis
> > to decide which rows I keep and which r
Andrew Choens wrote:
> Interesting. Thanks.
>
> On Sat, 2009-02-07 at 02:36 +0100, Wacek Kusnierczyk wrote:
>
>> yes, you can do this with sed. suppose you have two files, one (say,
>> sample.txt) with the data to be filtered, record fields separated by,
>> e.g., a tab character, and another (s
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