search for: siew

Displaying 7 results from an estimated 7 matches for "siew".

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2003 Sep 14
1
reading in a file with multiple data types
...t they do not seem to yield the appropriate structure that allows the extraction of the numeric blocks correctly (due to the line spaces, tabs and spaces). I gratefully appreciate any advice and suggestion on how to obtain the desired data matrices/ dataframes from this data file in R. Thank you, Siew-Leng *Using R1.7.1. on windows ME, and on Unix. ------------------------------------ My data file contains data in the following block structure : 1) block of a summary (char) 2) line spaces 3) text line 4) Data : stored as : number \t number (spc) number (spc) number (spc) ... and so on. [the n...
2003 Aug 04
1
Error in calling stepAIC() from within a function
...encing a baffling behaviour of stepAIC(), and I hope to get any advice/help on what went wrong or I'd missed. I greatly appreciate any advice given. I am using stepAIC() to, say, select a model via stepwise selection method. R Version : 1.7.1 Windows ME Many thanks and best regards, Siew-Leng ***Issue : When stepAIC() is placed within a function, it seems that stepAIC() cannot detect the data matrix, and the program is halted as a result. However, when the same codes are copied, paste and run in R workspace, stepAIC can execute and R is able to produce the desired ou...
2007 Apr 18
2
[Bridge] Neighbour table overflow
Hi, I had successfully setup my bridge (br0) but after few minutes the br0 interface seems not working. ifconfig eth0 0.0.0.0 ifconfig eth5 0.0.0.0 brctl addbr br0 brctl addif br0 eth0 brctl addif br0 eth5 brctl stp br0 on I check on my system's /var/log/syslog file. It shows something strange messages as below: - Jan 2 10:44:22 fw01 kernel: ipt_tcpmss_target: bad length (64 bytes)
2004 Dec 12
2
Help : generating correlation matrix with a particular structure
Hi, I would like to generate a correlation matrix with a particular structure. For example, a 3n x 3n matrix : A_(nxn) aI_(nxn) bI_(nxn) aI_(nxn) A_(nxn) cI_(nxn) aI_(nxn) cI_(nxn) A_(nxn) where - A_(nxn) is a *specified* symmetric, positive definite nxn matrix. - I_(nxn) is an identity matrix of order n - a, b, c are (any) real numbers Many attempts have been unsuccessful because a
2004 May 16
2
Error in using coxph()
Hi, I am getting errors of the following kind. I can't seem to point the source of the error. I would greatly appreciate any advice. Many thanks and good day, -Melinda Error message : ---------------- "Ran out of iterations and did not converge in: fitter(X, Y, strats, offset, init, control, weights = weights,..." Details : --------- E is a vector of survival times (or censored
2004 Dec 13
1
Re: Help : generating correlation matrix with a particular
...Friars London EC3N 2PH phone: +44 (0)20 7528 4702 fax: +44 (0)20 7558 3785 >Message: 2 >Date: 12 Dec 2004 14:58:38 +0100 >From: Peter Dalgaard <p.dalgaard at biostat.ku.dk> >Subject: Re: [R] Help : generating correlation matrix with a > particular structure >To: Siew Leng TENG <siewlengteng at yahoo.com> >Cc: r-help at stat.math.ethz.ch >Message-ID: <x2sm6bd3e9.fsf at biostat.ku.dk> >Content-Type: text/plain; charset=us-ascii > >Siew Leng TENG <siewlengteng at yahoo.com> writes: > >> Hi, >> >> I would like...
2003 Jul 30
0
stepAIC()
Hi, I am experiencing a baffling behaviour of stepAIC(), and I hope to get any advice/help on this. Greatly appreciate any kind advice given. I am using stepAIC() to, say, select a model via stepwise selection method. R Version : 1.7.1 Windows ME Many thanks! ***Issue : When stepAIC() is placed within a function, it seems that stepAIC() cannot detect the data matrix, and the program is