[R] Neighbour List to Matrix

jim holtman jholtman at gmail.com
Fri Feb 17 19:12:55 CET 2012

You might want to post a better example of what your data looks like.
In the email, it is hard to tell how to split the data into rows that
can be read with three fields since it looks like the data is composed
of pairs of numbers.

On Fri, Feb 17, 2012 at 7:42 AM, A J <anxusgo at hotmail.com> wrote:
> Hi everybody!I'm a new user of R. I've been having a look to sotored mails in list, but I've been not able to find one suiting to my need. The issue is I have a neighbour list in a TXT file, just as lists generated by social network softwares (f.i. Pajek), where you get Field1, Field2, Value. In my case, list follow the next way:ID1  IDP2    SUMVAL1 56      0.0659358951    900     0.0441101851    1409    0.1963141973    4       0.0713203883    83      0.0162695643    529     0.0113592393    883     0.0122425333    1242    0.0165589244    3       0.0043070244    7       0.0046998214    16      0.0047351125    7       0.0103249265    16      0.0112505045    498     0.0097098585    502     0.0047757495    508     0.031411560
> The question is, how can I convert this list into a matrix? I think is good to know that list contain more than 600000 rows with around 14000 nodes (participants). If it's possible I would like to know all necessary stetps to do this. This is: load the TXT file, create the matrix through data contained in it, and finally to export to CSV or TXT file. Any idea or suggestion will be wellcome!Thank you very much in advance.AJ
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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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