
just to add to ted's explanation in case it helps to fix the email 
server problem: below are the two Recipients  and one of the two is 
always contained in the repeated emails that I'm receiving.  Also,  of 
course i don't mean to claim that the names contained in below are 
doing anything to cause the problem .  VEC Operator is just an example. 
There are 3 or 4 others that repeat also. The repeating seems to have 
slowed down but it's still happening off and on ? Thanks.

 
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Subject: Re: [R] VEC Operator in R
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Subject: Re: [R] VEC Operator in R
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On Thu, Oct 23, 2008 at  2:37 PM, Patrick Burns wrote:

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 From: "Patrick Burns" <pburns@pburns.seanet.com>
To: "megh" <megh700004@yahoo.com>
Cc: r-help@r-project.org
Date: Thu Oct 23 13:24:49 CDT 2008
Subject: Re: [R] VEC Operator in R

For 'VEC' you may not need to do anything -- in
a lot of circumstances it will just work.

For 'VECH' you can write a function using the
'lower.tri' function.

But it seems to me that the assumption behind your
question is that a simple function that someone else
has written is going to be better than a simple function
that you write.  Not true (barring bugs).

R is egalitarian -- your functions have the same standing
as "official" functions. A lot of times it is faster to write
a function of your own rather than search out someone
else's even if you know such functions exist.

Patrick Burns
patrick@burns-stat.com <mailto:patrick@burns-stat.com>   
<mailto:patrick@burns-stat.com>
+44 (0)20 8525 0696
http://www.burns-stat.com <http://www.burns-stat.com>   
<http://www.burns-stat.com>
(home of S Poetry and "A Guide for the Unwilling S User")

megh wrote:
> Can anyone please tell whether there is any R function to act as "VEC" 
> and
> "VECH" operator on Matrix? Yes of course, I can write a
> user-defined-function for that or else, I can put dim(mat) <- NULL. 
> However
> I am looking for some R function.
>
> Your help will be highly appreciated.
>
> Regards,
>

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