[R] Neighbour List to Matrix

A J
Fri, 17 Feb 2012 12:42:36 -0000

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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