R help - Apr 2001 - how to do java-like hashtables in R, R from a java progra mmer's p onit of view

It sounds like we are kindred spirits.

I am using an old PC, with linux installed, running tcpdump as my packet
sniffer.

I will experiment with data frames as you suggest to get the hang of R some
more
before worrying about hashtables again.

Chris Marshall

-----Original Message-----
From: M. Edward (Ed) Borasky
To: Chris Marshall
Cc: r-help at stat.math.ethz.ch
Sent: 4/25/01 4:44 PM
Subject: Re: [R] how to do java-like hashtables in R, R from a java
programmer's p onit of view

On Wed, 25 Apr 2001, Chris Marshall wrote:

[snip]

I do some *very* similar things, except that I do the data structuring
in
Perl and create comma-separated value files that I can read directly
into
R with "read.csv". The basic data structure in R is the data frame,
and
most
of my Perl code simply builds data frames.

I have actually processed sniffer-like data. In the specific case, I
simply
built a list indexed by time stamp in milliseconds (column 1). Column 2
is the
"from" IP address, column 2 is to "to" IP address, column 3
is the byte
count
and column 4 is the protocol. In actuality, my data came from Microsoft
SMS
NetMon rather than from a sniffer. Then all I have to do is read the
data into
a statistics package (when I did this I used Minitab, not R) and I can
easily
do analysis on packets by source, destination, protocol, etc. Contact me
off-
list for more details.
--
znmeb at aracnet.com (M. Edward Borasky) http://www.aracnet.com/~znmeb

How to Stop A Folksinger Cold # 3
"If you miss the train I'm on..."
Tough.

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