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From: "John D'Errico" <woodchips@rochester.rr.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: checki if a matrix is positive-semidefinite
Date: Sat, 5 Jan 2008 09:50:55 +0000 (UTC)
Organization: John D'Errico (1-3LEW5R)
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"Roger Stafford" <ellieandrogerxyzzy@mindspring.com.invalid> wrote in 
message <fln5fe$rhk$1@fred.mathworks.com>...
>   Oops!  My apologies for accidentally clicking on the "Flag as spam" line 
instead 
> of the "View original format" line just above it on this thread.  If anyone 
knows 
> how to undo this unintended action please do so.
> 
> Roger Stafford

I did it once by accident too. I ended up
flagging enough posts as spam on one day
that it became a reflex action. So when I
went up there to respond to a post, I flagged
it instead.

You can't undo it. But the good news is, that
does not matter. You hurt nothing by your
mis-click. Since it takes 5 DIFFERENT people
to flag something as spam, only multiple
people making the same mistake as you do
will cause the post to go away. And the
probability of many people all mis-clicking
on the same post is quite small. This is the
wisdom of their choice to force multiple
people to flag a post as spam.

And, in the very rare event of a post
disappearing by such a compound mistake, 
I imagine that an e-mail to our friendly
Matlab Central administrator would resolve
the problem.

One thing that could be done is to propose
to their team that they change the "flag as
spam" link to a flag as spam checkbox, that
can then be unchecked. It seems to me a
simple enough change that they might swap
it in on some upgrade to the site. I'm not at
all sure it is necessary though.

John