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Thread Subject:
a huge loss for the file exchange

Subject: a huge loss for the file exchange

From: Andres

Date: 20 Jun, 2011 12:08:04

Message: 1 of 34

I am still shocked since i just found out than John d'Errico has removed (almost) all of his contributions to the mathworks file exchange. I haven't found any background on that, I only got a short message from him in reply to a mail regarding one of his submissions.

I think quite all of us agree that John has published the most excellent and useful work on the file exchange, with great support. I would be a tremendous loss if it just vanished.

Does anyone know some details / statements... (I don't want to bother him) ?

Subject: a huge loss for the file exchange

From: Mark Shore

Date: 20 Jun, 2011 15:40:14

Message: 2 of 34

Seconded. I've found John's contributions to be enormously useful, both for their direct applications and as a guide to how MATLAB programming should be done.

Subject: a huge loss for the file exchange

From: Mark Shore

Date: 20 Jun, 2011 15:49:04

Message: 3 of 34

I suppose the recent change to his FEX personal profile is a clue.

Subject: a huge loss for the file exchange

From: Anon

Date: 20 Jun, 2011 15:49:04

Message: 4 of 34

If John removed nearly all his files, this would be a tremendous loss for the community. Hope to have you back here, John!

Subject: a huge loss for the file exchange

From: ImageAnalyst

Date: 20 Jun, 2011 16:43:12

Message: 5 of 34

On Jun 20, 11:49 am, "Mark Shore" <msh...@magmageosciences.ca> wrote:
> I suppose the recent change to his FEX personal profile is a clue.

And how did you see that? I can't find him anywhere:
http://www.mathworks.com/matlabcentral/fileexchange/?term=author%3Ad%27errico
What does it say (or did it say)?

Subject: a huge loss for the file exchange

From: Alan Weiss

Date: 20 Jun, 2011 16:53:50

Message: 6 of 34

On 6/20/2011 12:43 PM, ImageAnalyst wrote:
> On Jun 20, 11:49 am, "Mark Shore"<msh...@magmageosciences.ca> wrote:
>> I suppose the recent change to his FEX personal profile is a clue.
>
> And how did you see that? I can't find him anywhere:
> http://www.mathworks.com/matlabcentral/fileexchange/?term=author%3Ad%27errico
> What does it say (or did it say)?

http://www.mathworks.com/matlabcentral/fileexchange/authors/679
And his personal profile: "Gone Fishin'"
http://www.youtube.com/watch?v=IqdtzJvliMk

Alan Weiss
MATLAB mathematical toolbox documentation

Subject: a huge loss for the file exchange

From: Mark Shore

Date: 20 Jun, 2011 16:57:05

Message: 7 of 34

ImageAnalyst <imageanalyst@mailinator.com> wrote in message <a787afcb-37cf-478a-9250-94aae31d75a4@16g2000yqy.googlegroups.com>...
> On Jun 20, 11:49 am, "Mark Shore" <msh...@magmageosciences.ca> wrote:
> > I suppose the recent change to his FEX personal profile is a clue.
>
> And how did you see that? I can't find him anywhere:
> http://www.mathworks.com/matlabcentral/fileexchange/?term=author%3Ad%27errico
> What does it say (or did it say)?

It links to a YouTube video of Bing Crosby and Louis Armstrong singing "Gone Fishin'"

http://www.mathworks.com/matlabcentral/fileexchange/authors/679

Subject: a huge loss for the file exchange

From: ImageAnalyst

Date: 20 Jun, 2011 17:15:03

Message: 8 of 34

On Jun 20, 12:57 pm, "Mark Shore" <msh...@magmageosciences.ca> wrote:
> It links to a YouTube video of Bing Crosby and Louis Armstrong singing "Gone Fishin'"
>
> http://www.mathworks.com/matlabcentral/fileexchange/authors/679
-----------------------------------------------------------------------------------
Well I'm going to Arizona for two weeks (later this week) but I'm not
planning on taking down all my File Exchange submissions, (though I'm
not claiming to be anywhere near the value of John). Let's hope he
returns with a new improved batch of submissions. I'm glad I got his
allwords and polyfitn before they vanished.

By the way, what ever happened to Urs Schwartz (http://
www.mathworks.com/matlabcentral/newsreader/author/11763)? He used to
be one of the top 3-5 newsgroup contributors monthly, and is still #2
on the all time list (http://groups.google.com/group/comp.soft-
sys.matlab/about?hl=en) yet last August he dropped off the planet.

And it seems Walter abandoned this newsgroup for the "Answers" forum
on the Mathworks site.

We're losing some of our best and most helpful experts (though Walter
can still be found). Let's hope Steve Lord is not going to fall into
a black hole next.

Subject: a huge loss for the file exchange

From: Yair Altman

Date: 20 Jun, 2011 19:01:19

Message: 9 of 34

ImageAnalyst <imageanalyst@mailinator.com> wrote in message <eee56e49-6a91-4d9c-af68-0c4a1c37431d@k6g2000yqc.googlegroups.com>...
> On Jun 20, 12:57 pm, "Mark Shore" <msh...@magmageosciences.ca> wrote:
> > It links to a YouTube video of Bing Crosby and Louis Armstrong singing "Gone Fishin'"
> >
> > http://www.mathworks.com/matlabcentral/fileexchange/authors/679
> -----------------------------------------------------------------------------------
> Well I'm going to Arizona for two weeks (later this week) but I'm not
> planning on taking down all my File Exchange submissions, (though I'm
> not claiming to be anywhere near the value of John). Let's hope he
> returns with a new improved batch of submissions. I'm glad I got his
> allwords and polyfitn before they vanished.
>
> By the way, what ever happened to Urs Schwartz (http://
> www.mathworks.com/matlabcentral/newsreader/author/11763)? He used to
> be one of the top 3-5 newsgroup contributors monthly, and is still #2
> on the all time list (http://groups.google.com/group/comp.soft-
> sys.matlab/about?hl=en) yet last August he dropped off the planet.
>
> And it seems Walter abandoned this newsgroup for the "Answers" forum
> on the Mathworks site.
>
> We're losing some of our best and most helpful experts (though Walter
> can still be found). Let's hope Steve Lord is not going to fall into
> a black hole next.


Not to mention Duane H., Peter A., Brad P. and a few others who went fishin' years ago...

Subject: a huge loss for the file exchange

From: Matt J

Date: 20 Jun, 2011 19:55:20

Message: 10 of 34

The FEX has been on the fritz for weeks. Who knows if the files are really gone?

Subject: a huge loss for the file exchange

From: Andres

Date: 20 Jun, 2011 21:24:04

Message: 11 of 34

"Matt J" wrote in message <ito8j8$h2t$1@newscl01ah.mathworks.com>...
> [..] Who knows if the files are really gone?

In the email mentioned above I suggested a minor correction for his submission 'rmsearch', and John replied by politely indicating that he had removed all of his files from the file exchange.

Thanks Alan and Mark for your remarks about the youtube video content - in Germany it is blocked due to copyright reasons (no joke).

Above all, let's hope that John, and Urs, are doing well.

Subject: a huge loss for the file exchange

From: Nasser M. Abbasi

Date: 21 Jun, 2011 00:26:01

Message: 12 of 34

On 6/20/2011 10:15 AM, ImageAnalyst wrote:

>
> We're losing some of our best and most helpful experts (though Walter
> can still be found). Let's hope Steve Lord is not going to fall into
> a black hole next.

May be these folks you mentioned as gone, they all went
fishing together?

Btw, You do not do fishing, do you ImageAnalyst? else
we will be worried also :)

--Nasser

Subject: a huge loss for the file exchange

From: ImageAnalyst

Date: 21 Jun, 2011 01:10:21

Message: 13 of 34

On Jun 20, 8:26 pm, "Nasser M. Abbasi" <n...@12000.org> wrote:
> Btw, You do not do fishing, do you ImageAnalyst? else
> we will be worried also :)
> --Nasser
-------------------------------------------------------------
Only occasionally, and never (anymore) on trips dedicated to it.
Though my postings may become sparse or nonexistent after Thursday for
a couple of weeks while I travel in Arizona, and for about 2-3 weeks
around August or September while I'm traveling in Europe and South
America. I will be back though, I've still got more than a decade
until retirement (kids college to pay for - ouch).
ImageAnalyst

Subject: a huge loss for the file exchange

From: John D'Errico

Date: 21 Jun, 2011 10:42:02

Message: 14 of 34

"Andres" wrote in message <itodpk$2th$1@newscl01ah.mathworks.com>...
> "Matt J" wrote in message <ito8j8$h2t$1@newscl01ah.mathworks.com>...
> > [..] Who knows if the files are really gone?
>
> In the email mentioned above I suggested a minor correction for his submission 'rmsearch', and John replied by politely indicating that he had removed all of his files from the file exchange.
>
> Thanks Alan and Mark for your remarks about the youtube video content - in Germany it is blocked due to copyright reasons (no joke).
>
> Above all, let's hope that John, and Urs, are doing well.

Thanks all.

I intend to take a long vacation, to really retire, having
now been answering questions on c.s-s.m since roughly
1988. My frustration metric has admittedly risen of late.
This tells me that I do indeed need that vacation.

As for those files, I'm not sure what to do with them.

John

Subject: a huge loss for the file exchange

From: Doug Schwarz

Date: 21 Jun, 2011 11:20:55

Message: 15 of 34

In article <itpshq$o12$1@newscl01ah.mathworks.com>,
 "John D'Errico" <woodchips@rochester.rr.com> wrote:

> "Andres" wrote in message <itodpk$2th$1@newscl01ah.mathworks.com>...
> > "Matt J" wrote in message <ito8j8$h2t$1@newscl01ah.mathworks.com>...
> > > [..] Who knows if the files are really gone?
> >
> > In the email mentioned above I suggested a minor correction for his
> > submission 'rmsearch', and John replied by politely indicating that he had
> > removed all of his files from the file exchange.
> >
> > Thanks Alan and Mark for your remarks about the youtube video content - in
> > Germany it is blocked due to copyright reasons (no joke).
> >
> > Above all, let's hope that John, and Urs, are doing well.
>
> Thanks all.
>
> I intend to take a long vacation, to really retire, having
> now been answering questions on c.s-s.m since roughly
> 1988. My frustration metric has admittedly risen of late.
> This tells me that I do indeed need that vacation.
>
> As for those files, I'm not sure what to do with them.
>
> John

Hi John,

Glad to hear you're okay -- I was a little worried. By all means, take
a long vacation, permanent even, but why not re-upload your files, mark
them all as unsupported, remove your contact info from them and from
your author page? That ought to reduce the number of inquiries you get
-- and then ignore the ones you do get. Heck, you've probably already
answered every possible question about them on the newsgroup.

Doug

--
Doug Schwarz
dmschwarz&ieee,org
Make obvious changes to get real email address.

Subject: a huge loss for the file exchange

From: Sadik

Date: 21 Jun, 2011 11:31:04

Message: 16 of 34

Helping others is a super useful way to keep oneself up and healthy in this stressful world and it is also the door opening to an unforeseeable world...

Withdrawing one's favor is a quick way to become deprived of the many benefits coming with it, which is better realized only later in time...

Subject: a huge loss for the file exchange

From: Nasser M. Abbasi

Date: 21 Jun, 2011 11:31:24

Message: 17 of 34

On 6/21/2011 3:42 AM, John D'Errico wrote:

>
> Thanks all.
>
> I intend to take a long vacation, to really retire, having
> now been answering questions on c.s-s.m since roughly
> 1988. My frustration metric has admittedly risen of late.
> This tells me that I do indeed need that vacation.
>
> As for those files, I'm not sure what to do with them.
>
> John

Hope you enjoy your vacation!

Since you asked, I suggest you write a Matlab book, about
the files, your Matlab work, may be put a story behind them,
describe the algorithms more, etc... with some of your Matlab
knowledge added. The files can be added in the appendix, and
have a CD.

This should be something to keep you busy in your long vacation ;)

--Nasser

Subject: a huge loss for the file exchange

From: Wolfgang Schwanghart

Date: 21 Jun, 2011 12:59:20

Message: 18 of 34

I'd buy that book! :-) Enjoy your vacation! But, please, re-upload your files and mark them as unsupported. Not only because some of my submissions require them to work ;-) (e.g.
http://www.mathworks.com/matlabcentral/fileexchange/25948-variogramfit
http://www.mathworks.com/matlabcentral/fileexchange/20355-experimental-semi-variogram

W.

"Nasser M. Abbasi" <nma@12000.org> wrote in message <itpveb$kfq$1@speranza.aioe.org>...
> On 6/21/2011 3:42 AM, John D'Errico wrote:
>
> >
> > Thanks all.
> >
> > I intend to take a long vacation, to really retire, having
> > now been answering questions on c.s-s.m since roughly
> > 1988. My frustration metric has admittedly risen of late.
> > This tells me that I do indeed need that vacation.
> >
> > As for those files, I'm not sure what to do with them.
> >
> > John
>
> Hope you enjoy your vacation!
>
> Since you asked, I suggest you write a Matlab book, about
> the files, your Matlab work, may be put a story behind them,
> describe the algorithms more, etc... with some of your Matlab
> knowledge added. The files can be added in the appendix, and
> have a CD.
>
> This should be something to keep you busy in your long vacation ;)
>
> --Nasser

Subject: a huge loss for the file exchange

From: Steven_Lord

Date: 21 Jun, 2011 13:10:56

Message: 19 of 34



"ImageAnalyst" <imageanalyst@mailinator.com> wrote in message
news:eee56e49-6a91-4d9c-af68-0c4a1c37431d@k6g2000yqc.googlegroups.com...
> On Jun 20, 12:57 pm, "Mark Shore" <msh...@magmageosciences.ca> wrote:
>> It links to a YouTube video of Bing Crosby and Louis Armstrong singing
>> "Gone Fishin'"
>>
>> http://www.mathworks.com/matlabcentral/fileexchange/authors/679
> -----------------------------------------------------------------------------------
> Well I'm going to Arizona for two weeks (later this week) but I'm not
> planning on taking down all my File Exchange submissions, (though I'm
> not claiming to be anywhere near the value of John). Let's hope he
> returns with a new improved batch of submissions. I'm glad I got his
> allwords and polyfitn before they vanished.
>
> By the way, what ever happened to Urs Schwartz (http://
> www.mathworks.com/matlabcentral/newsreader/author/11763)? He used to
> be one of the top 3-5 newsgroup contributors monthly, and is still #2
> on the all time list (http://groups.google.com/group/comp.soft-
> sys.matlab/about?hl=en) yet last August he dropped off the planet.
>
> And it seems Walter abandoned this newsgroup for the "Answers" forum
> on the Mathworks site.
>
> We're losing some of our best and most helpful experts (though Walter
> can still be found). Let's hope Steve Lord is not going to fall into
> a black hole next.

I hope that as well -- the gravitational stresses would be ... let's say
unpleasant and leave it at that.

I don't plan on going anywhere long-term; I will be taking some vacation
time sans newsgroup/email access this summer for various reasons, but that's
all I have planned.

--
Steve Lord
slord@mathworks.com
To contact Technical Support use the Contact Us link on
http://www.mathworks.com

Subject: a huge loss for the file exchange

From: Steven_Lord

Date: 21 Jun, 2011 13:15:46

Message: 20 of 34



"John D'Errico" <woodchips@rochester.rr.com> wrote in message
news:itpshq$o12$1@newscl01ah.mathworks.com...
> "Andres" wrote in message <itodpk$2th$1@newscl01ah.mathworks.com>...
>> "Matt J" wrote in message <ito8j8$h2t$1@newscl01ah.mathworks.com>...
>> > [..] Who knows if the files are really gone?
>>
>> In the email mentioned above I suggested a minor correction for his
>> submission 'rmsearch', and John replied by politely indicating that he
>> had removed all of his files from the file exchange.
>>
>> Thanks Alan and Mark for your remarks about the youtube video content -
>> in Germany it is blocked due to copyright reasons (no joke).
>>
>> Above all, let's hope that John, and Urs, are doing well.
>
> Thanks all.
>
> I intend to take a long vacation, to really retire, having
> now been answering questions on c.s-s.m since roughly
> 1988. My frustration metric has admittedly risen of late.
> This tells me that I do indeed need that vacation.
>
> As for those files, I'm not sure what to do with them.

You've certainly earned a vacation, my friend. Thank you for all the hard
work you've put in helping grow several new groups of gurus and more than a
few newbies into seasoned MATLAB users. You'll always be welcome here should
you get the itch to answer more questions once your frustration level has
decreased.

As for your files, I think the suggestion that others have made, to return
them to the File Exchange but make it clear that any questions should go to
the newsgroup instead of to you directly, is a good one.

--
Steve Lord
slord@mathworks.com
To contact Technical Support use the Contact Us link on
http://www.mathworks.com

Subject: a huge loss for the file exchange

From: Greg Heath

Date: 21 Jun, 2011 22:08:06

Message: 21 of 34

On Jun 21, 9:15 am, "Steven_Lord" <sl...@mathworks.com> wrote:
> "John D'Errico" <woodch...@rochester.rr.com> wrote in message
>
> news:itpshq$o12$1@newscl01ah.mathworks.com...
>
>
>
>
>
> > "Andres" wrote in message <itodpk$2t...@newscl01ah.mathworks.com>...
> >> "Matt J" wrote in message <ito8j8$h2...@newscl01ah.mathworks.com>...
> >> > [..] Who knows if the files are really gone?
>
> >> In the email mentioned above I suggested a minor correction for his
> >> submission 'rmsearch', and John replied by politely indicating that he
> >> had removed all of his files from the file exchange.
>
> >> Thanks Alan and Mark for your remarks about the youtube video content -
> >> in Germany it is blocked due to copyright reasons (no joke).
>
> >> Above all, let's hope that John, and Urs, are doing well.
>
> > Thanks all.
>
> > I intend to take a long vacation, to really retire, having
> > now been answering questions on c.s-s.m since roughly
> > 1988. My frustration metric has admittedly risen of late.
> > This tells me that I do indeed need that vacation.
>
> > As for those files, I'm not sure what to do with them.
>
> You've certainly earned a vacation, my friend. Thank you for all the hard
> work you've put in helping grow several new groups of gurus and more than a
> few newbies into seasoned MATLAB users. You'll always be welcome here should
> you get the itch to answer more questions once your frustration level has
> decreased.
>
> As for your files, I think the suggestion that others have made, to return
> them to the File Exchange but make it clear that any questions should go to
> the newsgroup instead of to you directly, is a good one.
>
> --
> Steve Lord
> sl...@mathworks.com
> To contact Technical Support use the Contact Us link onhttp://www.mathworks.com- Hide quoted text -
>
> - Show quoted text -

Sorry to see you leave. Your contributions
have been highly regarded by me as well as others.

I agree with the suggestions of replacing
the files, without support, and direct inquiries to the newsgroup.

Enjoy your vacation. I don't carry much
weight with the Big Guy upstairs but I
have asked him to lighten whatever burdens
you have.

God Bless,

Greg

Subject: a huge loss for the file exchange

From: dpb

Date: 21 Jun, 2011 22:48:09

Message: 22 of 34

Steven_Lord wrote:

>
>
> "John D'Errico" <woodchips@rochester.rr.com> wrote in message
> news:itpshq$o12$1@newscl01ah.mathworks.com...
...

>> I intend to take a long vacation, to really retire, ...
>>
>> As for those files, I'm not sure what to do with them.
>
>
> You've certainly earned a vacation, my friend. Thank you for all the
> hard work you've put in helping grow several new groups of gurus and
> more than a few newbies into seasoned MATLAB users. You'll always be
> welcome here should you get the itch to answer more questions once your
> frustration level has decreased.
>
> As for your files, I think the suggestion that others have made, to
> return them to the File Exchange but make it clear that any questions
> should go to the newsgroup instead of to you directly, is a good one.
...


I'd certainly like to echo the first and urge that the second be the
chosen path...

--

Subject: a huge loss for the file exchange

From: Mark Shore

Date: 21 Jun, 2011 23:45:24

Message: 23 of 34

ImageAnalyst <imageanalyst@mailinator.com> wrote in message
>
> By the way, what ever happened to Urs Schwartz (http://
> www.mathworks.com/matlabcentral/newsreader/author/11763)? He used to
> be one of the top 3-5 newsgroup contributors monthly, and is still #2
> on the all time list (http://groups.google.com/group/comp.soft-
> sys.matlab/about?hl=en) yet last August he dropped off the planet.
>

Can't say why he stopped - interests, free time and responsibilities change for all of us.

But his research institution still lists him (I won't link directly to his personal page for anti-spam reasons; click through if interested): http://www.neuroscience.uzh.ch/research/motor_systems

Subject: a huge loss for the file exchange

From: ImageAnalyst

Date: 22 Jun, 2011 01:05:17

Message: 24 of 34

On Jun 21, 7:45 pm, "Mark Shore" <msh...@magmageosciences.ca> wrote:
> But his (Urs's) research institution still lists him (I won't link directly to his personal page for anti-spam reasons; click through if interested):http://www.neuroscience.uzh.ch/research/motor_systems
----------------------------------------------------------------
Mark
So his page is not this:
http://en.wikipedia.org/wiki/Jim_Parsons ??? ; - )
Well it's good to see that he's still a scientist and hasn't abandoned
that for the big bucks of Burbank. Actually though, I'd quit my job
if I could make $200,000 an episode as a scientist on "Big Bang
Theory." However I do have a friend who moved around to some new jobs
and his pages at his old universities hung around for years - you'd
never know that he had moved on.

Subject: a huge loss for the file exchange

From: ImageAnalyst

Date: 22 Jun, 2011 00:53:08

Message: 25 of 34

On Jun 21, 6:48 pm, dpb <n...@non.net> wrote:
> I'd certainly like to echo the first and urge that the second be the
> chosen path...
>
-----------------------------------------------
Yes, I'd particularly like to get the minimum bounding rectangle
routine (the rectangle could be tilted with respect to the axes, and
it would figure out the tilt - that's what made it stand apart from
ordinary bounding box methods). It's one of those that I thought I'd
have a use for someday but never downloaded before because I thought
it would always be there. Now I've found a use for it. Anyway I could
get that now?
ImageAnalyst

Subject: a huge loss for the file exchange

From: Mark Shore

Date: 22 Jun, 2011 03:18:04

Message: 26 of 34

ImageAnalyst <imageanalyst@mailinator.com> wrote

> ...However I do have a friend who moved around to some new jobs
> and his pages at his old universities hung around for years - you'd
> never know that he had moved on.

True enough. But now you made it an Internet challenge(!)

Here's an article with Urs appearing alive and well three months ago, still researching at UZH.

http://www.uzh.ch/news/articles/2011/sicher-durch-das-schneegestoeber.html

Subject: a huge loss for the file exchange

From: Roger Stafford

Date: 22 Jun, 2011 03:52:04

Message: 27 of 34

"John D'Errico" <woodchips@rochester.rr.com> wrote in message <itpshq$o12$1@newscl01ah.mathworks.com>...
> Thanks all.
>
> I intend to take a long vacation, to really retire, having
> now been answering questions on c.s-s.m since roughly
> 1988. My frustration metric has admittedly risen of late.
> This tells me that I do indeed need that vacation.
>
> As for those files, I'm not sure what to do with them.
>
> John
- - - - - - - - -
  Hello John. I am very sympathetic with your wish to get away from cssm for a while, or even permanently. I sometimes have similar feelings. I know that one of these days soon I too will have to stop before I begin to make too many mistakes at my advanced age. I have committed more than my fair share of boo-boos in recent months.

  I very much enjoyed the various occasions in the past when we worked on the same thread and also the times we communicated directly by email. You encouraged me to get that 'randfixedsum' routine finished when I had almost given it up.

  You have made a very big contribution with all the file exchange routines you have written, and you should be proud of the help these have given to numerous users. I agree with others that it would be very good to make these files, or at least those you feel are particularly useful, available on FEX with the definite understanding that they are to be unsupported. There are some who are already suffering from anxiety about the prospect of doing without them.

  If in the future you should decide that you would like to do further work on cssm, I am sure that a great many people, myself included, would welcome you back with open arms. In any event I wish you well, and I encourage you to by all means enjoy your free time.

Roger Stafford

Subject: a huge loss for the file exchange

From: Rune Allnor

Date: 22 Jun, 2011 04:54:03

Message: 28 of 34

On Jun 21, 12:42 pm, "John D'Errico" <woodch...@rochester.rr.com>
wrote:

> I intend to take a long vacation, to really retire, having
> now been answering questions on c.s-s.m since roughly
> 1988. My frustration metric has admittedly risen of late.
> This tells me that I do indeed need that vacation.

Well earned!

> As for those files, I'm not sure what to do with them.

Well, your files are / were made for fun and uploaded
in benevolence. That benevolence is not always understood
by users, who might take for granted that they will get
access to your work for free, and maybe even think they
have the right to instant support. For free.

In this age of everything-is-supposed-to-be-available-on-
the-internet-instantly-and-for-free-and-students-have-to-
do-no-work-themselves-but-expect-to-get-access-to-what-
others-have-already-done, I can certainly see why you
withdraw the files!

Helping students is one thing; enabling freeriders quite
another.

As for uploading the files again, but with no support...
I tend to think of my work as *mine*. Not in the IP sense,
but as something that I somehow is responsible for. If I can
not, or will not, commit to that responsibility (or transfer
the responsibility to somebody who can), I tend to be very
reluctant to give away too much.

Rune

Subject: a huge loss for the file exchange

From: John D'Errico

Date: 23 Jun, 2011 11:57:05

Message: 29 of 34

"Roger Stafford" wrote in message <itrot4$igd$1@newscl01ah.mathworks.com>...
> "John D'Errico" <woodchips@rochester.rr.com> wrote in message <itpshq$o12$1@newscl01ah.mathworks.com>...
> > Thanks all.
> >
> > I intend to take a long vacation, to really retire, having
> > now been answering questions on c.s-s.m since roughly
> > 1988. My frustration metric has admittedly risen of late.
> > This tells me that I do indeed need that vacation.
> >
> > As for those files, I'm not sure what to do with them.
> >
> > John
> - - - - - - - - -
> Hello John. I am very sympathetic with your wish to get away from cssm for a while, or even permanently. I sometimes have similar feelings. I know that one of these days soon I too will have to stop before I begin to make too many mistakes at my advanced age. I have committed more than my fair share of boo-boos in recent months.
>
> I very much enjoyed the various occasions in the past when we worked on the same thread and also the times we communicated directly by email. You encouraged me to get that 'randfixedsum' routine finished when I had almost given it up.
>
> You have made a very big contribution with all the file exchange routines you have written, and you should be proud of the help these have given to numerous users. I agree with others that it would be very good to make these files, or at least those you feel are particularly useful, available on FEX with the definite understanding that they are to be unsupported. There are some who are already suffering from anxiety about the prospect of doing without them.
>
> If in the future you should decide that you would like to do further work on cssm, I am sure that a great many people, myself included, would welcome you back with open arms. In any event I wish you well, and I encourage you to by all means enjoy your free time.
>
> Roger Stafford

Thanks to all of your comments. I will repost the best of those
tools over the next few weeks, but with the clear statement
that they are there as is.

John

Subject: a huge loss for the file exchange

From: Steve Eddins

Date: 23 Jun, 2011 12:08:36

Message: 30 of 34

On 6/23/2011 7:57 AM, John D'Errico wrote:
> "Roger Stafford" wrote in message
> <itrot4$igd$1@newscl01ah.mathworks.com>...
>> "John D'Errico" <woodchips@rochester.rr.com> wrote in message
>> <itpshq$o12$1@newscl01ah.mathworks.com>...
>> > Thanks all.
>> > > I intend to take a long vacation, to really retire, having
>> > now been answering questions on c.s-s.m since roughly
>> > 1988. My frustration metric has admittedly risen of late.
>> > This tells me that I do indeed need that vacation.
>> > > As for those files, I'm not sure what to do with them.
>> > > John
>> - - - - - - - - -
>> Hello John. I am very sympathetic with your wish to get away from cssm
>> for a while, or even permanently. I sometimes have similar feelings. I
>> know that one of these days soon I too will have to stop before I
>> begin to make too many mistakes at my advanced age. I have committed
>> more than my fair share of boo-boos in recent months.
>>
>> I very much enjoyed the various occasions in the past when we worked
>> on the same thread and also the times we communicated directly by
>> email. You encouraged me to get that 'randfixedsum' routine finished
>> when I had almost given it up.
>>
>> You have made a very big contribution with all the file exchange
>> routines you have written, and you should be proud of the help these
>> have given to numerous users. I agree with others that it would be
>> very good to make these files, or at least those you feel are
>> particularly useful, available on FEX with the definite understanding
>> that they are to be unsupported. There are some who are already
>> suffering from anxiety about the prospect of doing without them.
>>
>> If in the future you should decide that you would like to do further
>> work on cssm, I am sure that a great many people, myself included,
>> would welcome you back with open arms. In any event I wish you well,
>> and I encourage you to by all means enjoy your free time.
>>
>> Roger Stafford
>
> Thanks to all of your comments. I will repost the best of those
> tools over the next few weeks, but with the clear statement
> that they are there as is.
>
> John

Thanks, John. We appreciate very much your many contributions to the
MATLAB community, and we hope you enjoy your fishing!

--
Steve Eddins
http://blogs.mathworks.com/steve/

Subject: a huge loss for the file exchange

From: Herwig Peters

Date: 24 Jun, 2011 11:35:05

Message: 31 of 34

I had written my own routine to sort frequency-dependent eigenvalues according to their corresponding eigenvectors. The sorting is based on the modal assurance criterion. I had bookmarked John's eigenshuffle submission which I guess does something very similar. I thought when I have some free time I'm going to compare these two. I bookmark a lot of stuff I want to revisit, assuming it's surely going to be there when I return. What a surprise that it wasn't ...

Subject: a huge loss for the file exchange

From: Jonas

Date: 24 Jun, 2011 23:49:05

Message: 32 of 34

>
> Thanks to all of your comments. I will repost the best of those
> tools over the next few weeks, but with the clear statement
> that they are there as is.
>
> John

Thank you very much for reconsidering to repost some of your excellent and inspiring code, and for all your other contributions to the Matlab community, including your thoughtful comments on many FEX submissions. Your "optimization tips and tricks" is required reading for my students, for example.

Enjoy your time off. As others have said: You'll be remembered fondly - here and on stackoverflow - and should you decide to return, it'll be even better.

Jonas

Subject: a huge loss for the file exchange

From: Duane Hanselman

Date: 29 Jun, 2011 23:16:10

Message: 33 of 34

"Yair Altman" wrote in message <ito5dv$6sk$1@newscl01ah.mathworks.com>...

> Not to mention Duane H., Peter A., Brad P. and a few others who went fishin' years ago...

Duane H. took down 85 file exchange files a couple years ago for a number of reasons including:
(a) the increasing presence of useless, redundant, or horrifically coded submissions, that hide the true gems,
(b) the lowest common denominator file reviews given by Marco and his ilk,

I still have all my files. I still do MATLAB. The next edition of "Mastering MATLAB" is coming out this fall, so it too can be reviewed as an unhelpful book or simply as a copy and paste from the help documents.

I have just reached the point where I do not need or want to put up with the crap that the lowest common denominator spits out.

I once served on a MATLAB Central team that culled the File exchange of bad submissions. That lasted several months, then died because it was too much work for a handful of dedicated volunteers that included John R.

Duane Hanselman

Subject: a huge loss for the file exchange

From: Thomas Clark

Date: 5 Jul, 2011 23:02:09

Message: 34 of 34

John,

I'd like to echo everybody else's thanks for the work you've done on the FEX and CSSM.

For me, the most valuable aspect of your work has not been the code/syntax; it has been the learning. Five years ago, I was still learning MATLAB and knew little about computational geometry. I feel strongly that your submissions (and responses when I've been stuck on the file exchange) have taught me a great deal.

I've now mastered computational geometry in <=3D and can think about problems in higher dimensions. I've constructed robust interpolants where splines were oscillating, solved nonlinear optimisation problems and fitted hypersurfaces with polynomials. Much/all of this has been achieved with your help.

I'll try and help out on CSSM a bit more than I do now - mostly looking out for the computational geometry subjects - and hopefully propagate some of that knowledge, although clearly I'm not of the same calibre!

Three of 'my' favourite achievements for which a good deal of credit goes to you:

(gridfit)
Fixed an oscillating spline surface in 2D, which had resulted in a ship propeller blade looking like corrugated iron and vibrating like crazy as it rotated in the testing tank

(parse_pv_pairs)
I've put together multiple toolboxes (for work and PhD). I'm proud that they're easy to use, with intuitive and descriptive function interfaces which my colleagues really appreciate. Almost every one of the higher level functions contains a call to parse_pv_pairs.

(polyfitn)
Take 4 cameras, resolution 1MP, operating at 1000Hz in a vibrating environment, recording images of particles 10um in diameter. Reconstructing 3D volumetric images from the 4 cameras is impossible unless an incredibly accurate inter-camera calibration map is defined. Polyfitn helped achieve this (helped in a big way), along with several posts which described the use and theory of polyfitn.

Thanks.

Tom

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