MATLAB Answers

Walter Roberson
2

MATLAB Answers Wish-list #4 (and bug reports)

Asked by Walter Roberson
on 14 Aug 2015
Latest activity Edited by Walter Roberson
on 20 Jun 2018 at 2:41

This topic is for features you would like to see for the MATLAB Answers facility itself, and also for bug reports about the MATLAB Answers facility.

This topic is the follow on to the first Wish-list for MATLAB Answer sections and second MATLAB Answers Wish-list #2 (and bug reports). Those grew large enough to become unwieldy; and Mathworks has made enough changes to make a number of the past points no longer of relevance. More recently there was the limited purpose New design of the forum - grey on white which turned into a bug and wish list; I have renamed that for continuity.

I suggest one wish (or bug report) per answer, so that people can vote their wishes.

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47 Answers

Answer by Jon
on 15 Aug 2015
Edited by Jon
on 19 Aug 2015

Maybe this functionality already exists and I'm not aware of it, but why isn't there a notification of some kind on my profile page that alerts me to new comments, questions, and answers that I'm involved in? An unread message alert, something like this:

Then when you click on "Questions", those that are "unread" are at the top of the queue. And you can mark them unread if you want to come back to them later. I have a hard time keeping track otherwise, especially if I leave for an extended period of time.

  3 Comments

Work around: do a search on

contributor:jon

However, that will find all jon as it is a substring search on the contributor name. It is a bit more effective on names that are more distinctive.

You can search for your answer, Jon, by searching on

answered_by_id:86349

This number has nothing obvious to do with your Author number, and I do not as yet find a way to search by author number. And if you wanted to search on your Questions you would need a differerent id number yet. The only way to find those numbers is to left-click on a link to you and let it pop up the small summary about you, and then go and hover above the link to your Questions or Answers and read off the URL to discover the ID. Or click on the link and then read the tag out of the search box on the resulting page.

Yes, this could be made easier!

I am the only roberson around so it is easy for me to search for my own material, but you might have some difficulty if you searched by name.

This is a great idea!

A couple of months ago, Mathworks implemented "Activity Feed". If you look under "My MATLAB Answers", it is the first entry.

Notification is only for Questions that you are "subscribed" to. There is a configuration option to determine whether by default you want to subscribe to any question that you ask or answer or comment on. You can always toggle any given question on or off -- including toggling notifications on for a Question you have not responded to at all.

The subscriptions are not back-dated for anything you answered or commented on in the past, but it looks like they might have been turned on by default for any Question you asked.

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Answer by dpb
on 15 Aug 2015

Again the complaint of excessive white space (futile, I know :( ).

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Answer by Walter Roberson
on 28 Aug 2015

Needed: a Ban Hammer. Or at least a Spam Hammer. So that we can flag a poster as a raw spammer and toss all their postings, past and future, into spam quarantine.

Signed: the overnight spam janitor. Spamnitor? Spamitor? Spaminator?

  1 Comment

I’ve deleted a bunch of them as well recently. It’d be nice to be able to ‘freeze’ a spammer’s account to immediately prevent further postings from it, and automatically flagging it so that TMW will then take appropriate follow-up action.

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Answer by Walter Roberson
on 14 Aug 2015

When we delete a Question for spam, either by Delete with a spam flag or by clicking on This Is Spam for postings detected as probable spam then when the deletion is finished, the page is forwarded to the Answers home page. The painting of the home page requires that a time-consuming database lookup be done to find the most recent messages and present them. As it is common when doing spam control for us to have 6 to 20 Questions open in tabs (to allow the pages to paint in the background while we deal with them in sequence), that database lookup and repaint is slow and unnecessary, often adding 17+ seconds to the deletion process.

I therefore recommend that when a posting is deleted for spam, that instead of going to the homepage, that it just refreshes, taking us to the "Can't find your Question?" page; we can Back or close the tab or whatever we find appropriate from there.

Remember, deleting spam is not the normal work-flow for anyone but the staff and the decaSpartans (the 3000-ers ;-) ), and that when engaged in spam control the work-flow is seldom to want to see the Answers home page for each Question killed off.

  1 Comment

Thank you to the developers who made it possible to select large number of spam posts and delete them on one go!

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Answer by Greig
on 29 Aug 2015

A "Follow Question" button.

How many time have folk encountered a question that is useful or interesting and they won't too keep track of it, but don't necessarily have a comment or answer to contribute?

Basically a mechanism that allows you to follow a question, without having to answer it or comment on it, or bookmark it in your browser. An extra option, called "My Following", in the "My MATLAB Answers" menu would be an obvious place to link to a list of threads that you are following. Obviously, an "Unfollow" option would be needed too.

  3 Comments

Should following generate email notice of updates?

I would say that having the option to get email alerts would be useful.

A couple of months ago, Mathworks implemented "Activity Feed". If you look under "My MATLAB Answers", it is the first entry.

Notification is only for Questions that you are "subscribed" to. There is a configuration option to determine whether by default you want to subscribe to any question that you ask or answer or comment on. You can always toggle any given question on or off -- including toggling notifications on for a Question you have not responded to at all.

The subscriptions are not back-dated for anything you answered or commented on in the past, but it looks like they might have been turned on by default for any Question you asked.

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Answer by James Tursa
on 22 Oct 2015

I would like power-users to have the ability to conditionally accept an Answer during the initial 7-day wait period. There have been many occasions when a Question gets answered and it is obviously worthy of accepting. The original poster may not acknowledge it, or may simply provide a comment of thanks without formally accepting it. Rather than waiting the 7 days and then spending additional time coming back to the Question to accept the answer (if it hasn't been already), I would like to have the ability to click on some type of conditional acceptance button immediately. If no additional answers are subsequently posted and no answer has been accepted then when the 7 days expires the conditional acceptance would turn into a formal acceptance automatically. If additional answers do get subsequently posted then the conditional acceptance could be automatically deleted (maybe with an e-mail notification to the power-user to re-visit the Question).

  10 Comments

Afterthought It seems that a large number of ‘Questions’ of late could easily be resolved by the four-letter quasi-expletive used years ago (and still used in the gaming community): RTFM! = Read The (Friendly) Manual!

Not knowing where to look is a real thing. MATLAB is not a small language

Walter is right. The traffic is cyclical. But if we trail 4 quarters(T4Q), we actually see a significant increase each quarter.

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Answer by Paul Metcalf on 26 Oct 2016

One idea for MATLAB Central is the ability to follow an author. Currently you can only follow a file but there are some authors for which I'd like to receive a notification if new files are added...

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Answer by dpb
on 4 May 2018

Seems excessively strict given that the "extra-x" format is now default for all MS Office products; what's the reason isn't allowed--just never added to the "allowed" list, I presume? Just had a Q? wherein the poster ran into the problem; renamed the file but didn't change the format and caused issues because of incompatible format in Excel.

Run into when try to attach any .xlsx file--error box contains following text (I didn't bother to capture image, just the text):

Cannot attach this file because:
    File format is unsupported. Use any of these formats: .bmp, .csv, .fig, .gif, .jpg, .jpeg,
      .m, .mlx, .mat, .mdl, .pdf, .png, .txt, .xls, .zip
Attach a file:
Choose file.xlsx

  1 Comment

(Answers dev) Hi dpb, Thanks for bringing this to our attention.

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Answer by Walter Roberson
on 14 Aug 2015
Edited by Walter Roberson
on 15 Aug 2015

Please add a keyword to Search Answers that specifies sorting order. I frequently want to link to a discussion from a few days ago, so a lot of my searches are of the form

contributor:roberson Some Terms of Relevance

and then I have to search and click on the sorting order drop-down to sort to Date Updated (Newest to Oldest) which does a page refresh. And then afterwards I have to Back twice, with the search needlessly being done again as I get back to the search results sorted by the default Relevance.

I suggest a keyword such as "sortby", such as "sortby:recent" with "sortby:newest" being equivalent to that. The default would be sortby:relevance (with sortby:relevence perhaps being accepted as an alternative for those of us who are sometimes weak in our spelling ;-) )

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Answer by Rena Berman on 13 Nov 2015

(MATLAB Answers Developer)

Thank you all for your valued feedback. We continue to monitor the wish lists and have incorporated the following projects into our development plan:

  • Ability to follow question threads and contributors
  • Enhancements to notifications
  • Unaccept/multiple answer acceptance
  • Improvements to the text editor
  • Less whitespace in Answers

We will you update you when each feature is closer to release. In the meantime, please continue to post new ideas, enhancements, and problems within this thread.

Thank you!

  36 Comments

I would like an email notification when comments are added to my question, and not just when answers are added. The comments are often asking for clarifications which people need to answer my question, and if I'm not notified about the comments, the question just sits there until I remember to check it.

And I would love to not get e-mails when someone unaccepts my answer. I switched off e-mail notifications, yet these somehow get through the net and are totally irrelevant to me!

KAE:

Under "My MATLAB Answers", there is a "My Questions", which shows you the recent activity on questions you have asked. There is also "My Comments", to see the activity on questions you have commented on (as I recall, you have made some contributions to other people.)

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Answer by Chad Greene
on 8 Apr 2016

For new users, it might help to force askers to answer yes to these questions before their question can be posted:

  • Did you describe your problem in detail? {{Include a help bubble that error messages should be included in the question, etc.}}
  • Have you provided a minimal working example? {{Include a help bubble describing an MWE for those who are unfamiliar with the concept.}}
  • Have you formatted your code for readability? {{Include a help bubble describing how to format code.}}

I don't think it would be necessary to make askers say yes to these questions forever, but it may get rules of etiquette and effectiveness into their heads if they have to think about their questions the first few times posting on the forum.

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Answer by Cedric Wannaz
on 10 Oct 2017
Edited by Cedric Wannaz
on 11 Oct 2017

For people who don't check the "Allow users to contact me securely" option in their profile, there could/ should be a button that allows us to send them an automated message "there has been some activity on your thread" (and e.g. a field or drop down for us to enter/select a thread ID).

The rational is that if someone wants time from us, it should be acknowledged/imposed that he/she accepts to receive reminders about open threads or just about added comments. This may help reducing the amount of questions for which the person asking never comes back (if only for saying that he/she doesn't need an answer anymore).

 

Some option for sending electric shocks remotely would be nice too..

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Answer by Adam
on 6 Jun 2018 at 9:22

Hopefully this is still work in progress, but the options for asking a question are a little odd at the moment. I notice that 'Release' has been added as a field which is great, but it is disabled until you enter a Matlab Product, which itself is not compulsory and is rarely filled in by people. The ability to ask the question is enabled straight away, without tags, product or release so why is release disabled until you enter a product? It just means that one of the most useful pieces of information for a question is very unlikely to be filled in most of the time.

  15 Comments

But don't throw away the release like you do now. For example if someone said they're using MATLAB R2016b and I decide to add a toolbox to the product list, now the release vanishes! Even if that toolbox existed in that release. So now if I add a toolbox, I have to remember what the release is so I can add it back in. If we moderators forgot the release and just added the toolbox, now the release info is gone. Obviously not a good situation.

Thank you everyone!

We appreciate all the great feedback around the release field and will consider these suggestions when we revisit this feature.

Is it worth having "Full Suite" as a separate product when it is at best an obscure name for a campus-wide license (referenced that way only once that I can see) ?.

I see there is also "Standard Suite". It looks to me as if "Standard Suite" and "Full Suite" are the two Student bundles, rather than products.

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Answer by Walter Roberson
on 14 Aug 2015

When making a response (Answer or Comment) to a topic originated by Mathworks Support, the browser will almost always time out, with the "Saving" notification going back to "Submit" as if the response had not been saved. This leads people to click Submit again, often several times. Usually the response does get saved, so we end up with one copy of the response for each time the person clicked Submit, but at least once for me the response did not get saved.

My work-around now is to select my response and Copy it in my browser and then refresh the page to see if the response did get posted, and if not then Paste and try again.

  3 Comments

You can use Lazarus https://addons.mozilla.org/en-US/firefox/addon/lazarus-form-recovery/ to avoid copying to the clipboard. Simply right click, select Recover Text, and pick the recent text that you typed in. It stores around 20 prior texts you entered and you can just pick one and have it enter it again. It's like it automatically saves your message after every keystroke to it's own private collection of clipboards.

"Lazarus Forms Recovery could not be verified for Firefox. Proceed with caution"

(and I do not get a Lazarus menu item when I right-click.)

It worked for me in the past, but I stopped paying attention to it partly because Lazarus has never worked with Google+. And now I can't bring up the manufacturer's page.

I use Firefox for pretty much everything. ‘Lazarus’ installed without problems (or notifications from Norton) on Firefox 40.0.2 (the latest version) earlier this morning. I’ve not used it yet.

@Image Analyst, thanks for the link!

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Answer by Walter Roberson
on 19 Sep 2015

If there were a search tag based upon who last modified a post, then I would be able to search

contributor:roberson asked_at:7 -last_updated_by:roberson

to select postings in I had contributed but I was not the most recent contributor. Especially if this was combined with my proposed sortby:newest I could be filtering down to things that have been recently updated by someone other than me.

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Answer by Adam
on 16 Oct 2015
Edited by Adam
on 16 Oct 2015

This seems to have been something that changed in the last few days. Why has the 'Home' link on Matlab Answers suddenly changed to take me to a page I find useless?

For the last year I have been here I have clicked on 'Home' as my standard way of returning to the full unfiltered list of all questions. I browse this sometimes to answer one and sometimes because the question is of interest and I want to read someone's answer.

Now this link takes me to a page where I have to click to 'Ask a Question', 'Answer a Question', read 'Top Questions' or 'Try Answering These'. This is very annoying.

It does at least seem that when I clock 'Go' next to 'Answer a Question' that this does now take me to the unfiltered list (yesterday it was taking me to a filtered list of only unanswered questions), but I'd still prefer that 'Home' takes me to the Matlab Answers page of all questions as it intuitively should.

  23 Comments

Hi Walter, thanks for the great thoughts. I would also vote if I could. :) Your feedback are very valuable for us to design our long term strategy and prioritize winning moves. I'll bring them to the community team. Power users will hear from us in next few weeks.

Thanks again!

Sometimes I see the backward compatibility of Matlab very critically, e.g. when base functions as fopen or strncmp change their behavior without a hint in the release notes. Getting a free Matlab license will have an influence on my mind, or at least on the way I express myself in the public forum.

In opposite to gifts, which mean a big finanviel advantage, I'd appreciate the oportunity to contact the developers directly.

(Answers dev) The new "Browse" link in the subnav menu works to take you to the old home page without filters on.

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Answer by Jan
on 24 Oct 2015

I admit, that I have problems to understand the meaning of the new landing page. I'm simply confused by the offered information. Therefore I assume, that this page does not support newcomers to improve the handling of the forum.

E.g. I see a list of "popular tags", which contains the terms "matlab", "matlab code" and "error". To improve the usage of the forum it would be much better to mention, that these terms are useless for the purpose of the tags.

Newcomers are still not instructed to use code formatting. In consequence the high reputations users spend time for editing questions and post instructions. This is a waste of power. Mentioning the FAQ on the landing page would be a shortcut also.

I do not think, that new users need to recognize users with a high reputation. They will recognize a valid answer, even if it was posted by another newcomer.

  3 Comments

I have had difficulty with new users not recognizing valid answers. New users tend to "know" that they are right, and that we are "hiding" the real answer from them, or that we are ignorant and do not know the real answer, or that obviously the fact their code does not work is a bug in MATLAB that will be fixed and a new release issued in 10 minutes. Convincing new users that MATLAB is right (or self-consistent) and their understanding is at fault is not always easy.

Thanks, Jan Simon. The new landing page will get better with great thoughts from power users like you. To your code formatting point, I'm thinking if we can also have this mentoring on the "ask a question' page.

@Walter: Over 6800 times users recognized your answers as valid and useful. I'm convinced, that they did so, because of the validity of your answers, and not due to the estimation of the other 6799 accepted answers.

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Answer by Image Analyst
on 14 Feb 2016

Far too often the original poster posts a new "Answer" to a question posed by someone in a Answer or Comment, instead of replying to that specific Answer or Comment where the question was posed. I suggest that the "Answer this question" caption be changed to mention the original poster, like "Answer the original question by Walter Roberson". Hopefully that will lessen the number of times people answer their own question when they should be replying to someone else.

I'd also like to see "Comment" be changed to "Reply" to be consistent with the wording used in almost all other online forums.

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Answer by Adam
on 27 Sep 2016

Not so much a wish, just an oddity I noticed. I set my profile to not allow me to be contactable by e-mail etc and I deselect the option to e-mail me when someone answers my questions so in general I don't get any e-mails from the forum which is as I want it.

Except..when someone unaccepts one of my answers I get sent an e-mail. Of all the things I might want e-mails about if I chose to this really isn't high on the list. I'd rather get an e-mail when someone accepts my answer instead if I really were to want e-mailing when someone makes some response to something I posted!

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Answer by Image Analyst
on 27 Oct 2016
Edited by Image Analyst
on 28 Oct 2016

Has anyone else other than me been getting strange symbols that say E6 52 or E630 or similar symbols instead of the little icons that are supposed to show, like these:

br

I first noticed them this morning on my home computer, and then again at work. Then they went away for most of the day, then they came back at work. And now at home they're here also. Rena suggested I clear my cache but that didn't fix the problem. I was just wondering if anyone else is seeing them too.

  14 Comments

(Answers dev) I have just received word that it should now be fixed on http://www.mathworks.com. Please let David Wey know if you see further issues.

Looks okay with http now, thanks!

Well, I just opened in Chrome instead of Firefox and "they're back!!!" :(

The link/trashcan icons are ok but the edit/delete are empty boxen...

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Answer by Walter Roberson
on 22 Feb 2017
Edited by Walter Roberson
on 22 Feb 2017

Spacing is interpreted irregularly.

In each of the below, the - are aligned above the +

0 leading spaces before middle, so 1 leading space on first line

 -   -   -   -
|+| |+| |+| |+|
 -   -   -   -

1 leading space before middle, so 2 leading spaces on first line

-   -   -   -
|+| |+| |+| |+|
-   -   -   -

2 leading spaces before middle, so 3 leading spaces on first line

   -   -   -   -
  |+| |+| |+| |+|
   -   -   -   -

So case of 2 leading spaces on the first line is handled differently and inconsistently from the other cases.

If I recall correctly, the previous discussion on this topic indicated that one leading space on the first line was the special "good" case and that 2 or more leading spaces on the first line were formatted differently; this test suggests a different algorithm.

If you take a section of code that is left aligned and use the {} button then two leading spaces are added, but that is precisely the bad case.

This is tied up to the question of adding code in which the blank-separated lines align properly. The previous discussion hinted that when you have a code structure such as

   blah
   if this and that
     bleh bletch
     more bleh
   end

then whether the "more" aligns with the "bleh" would depend on whether there were an odd number or even number of leading spaces on the "blah" and "more" lines.

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Answer by Cedric Wannaz
on 26 Oct 2017
Edited by Cedric Wannaz
on 26 Oct 2017

Rep. points should be convertible to bitcoin!

  4 Comments

Show 1 older comment

That was for the joke here, but I agree that we should lower the quality of our answers to save energy! And now I'll go and finish my tea, hoping that it will help me waking up a little more ..

Humor? Tea? If we meet, I'd be glad to convert one of your reputation points to a coffee, preferably this one: +1. :-)

Well let's plan on spending this one by having a tea or coffee if we find an occasion then :-) Next year will be hectic for me, but I am traveling occasionally to Germany, and even sometimes from Stuttgart to Frankfurt (e.g. when there is a snowstorm like in 2010 if I remember well, and I have to take the train because Stuttgart airport is closed ;-))

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Answer by dpb
on 15 Aug 2015

Repeated bug report -- the link to Answer or Question if edited is broken when displays

Last Activity Edited by _

this means there's no direct link to the answer any longer so one has to go to the original question and hunt...

  6 Comments

Yes, as I started the Answer -- "repeated bug report". Seems so trivial, why not fix it? Compared to screwing up other things royally as they seem more than happy to do, why not a simple positive fix? Seemed like if keep harping, mayhaps eventually ...

Yes, but why are you commenting on it now, some 8-9 months later? I expressed my thanks/appreciation for the fix back then (albeit with a note regarding the frustration over excessive whitespace reducing information density to almost nothing, granted. :) ) But, that issue hasn't yet been tackled that I see :(

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Answer by Walter Roberson
on 17 Aug 2015

A reminder that when one of the Community Editors posts a bunch of responses in a relatively short period, it probably isn't spam. I just had a remark "It is back online now" automagically flagged as potential spam :( And I expect this Answer will probably be flagged as potential spam too.

  10 Comments

Agggh, my pure-text response to something was just treated as spam :( Pillows, pillows, pillows, pillows, PILLOWS.

http://uk.mathworks.com/matlabcentral/answers/252209-tic-toc-in-subfunctions

Oh, risserfrazt! How can my two-line code response be spam??

http://uk.mathworks.com/matlabcentral/answers/258534-who-can-help-me-to-solve-and-run-this-code-to-evaluate-the-perfomance-of-a-wind-turbine-blade#answer_201972

(Just one of the several items of mine marked spam recently, but the others at least had links that might have triggered the scrutiny. For example links to msdn often trigger the potential-spam flag.)

Another one of life’s many mysteries. I just now rescued it.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

EDIT — When I just now looked for other erroneously flagged spam posts, I now note that this one has been snagged by the spam filter!

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Answer by Walter Roberson
on 28 Aug 2015
Edited by Walter Roberson
on 28 Aug 2015

Trendy allows plots to be tagged, but it is not possible to search using a tag: directive. If you click on a tag then the URL that is brought up has the tag as an arbitrary numeric value, so we cannot even effectively URL-hack to search by tag in any kind of meaningful text form.

For example, a number of the plots have the tag "answers", but tag:answers finds nothing.

  1 Comment

Trendy is gone, so this is now irrelevant.

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Answer by Walter Roberson
on 29 Aug 2015

When accessing by mobile phone, at least on Firefox for Android, if you select a section in the editor by press and hold and adjust boundaries, and then you click on {} Code button, then instead of the selection being made into code, the "if true" code block gets inserted before it as if it does not know that something is selected. (it would not entirely surprise me if it turned out that the android selection does not interface with Javascript, but I don't know either way.)

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Answer by Walter Roberson
on 10 Sep 2015

A plea from those of us with RSI: please move the Delete confirmation window default position closer to the delete link. It adds up when zapping dozens of spams.

  1 Comment

I was hit with this again last week, when I was going through deleting several tens of spams in a row.

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Answer by Walter Roberson
on 14 Sep 2015

When a comment has been incorrectly automatically marked as spam, clicking on "This is not spam" sometimes times out and fails, repeatedly. Sometimes a different person is able to fix the flag, sometimes two people are not able to fix it. Possibly the operation is a bit load-dependent so it might be by chance as to whether any particular volunteer is able to correct the flag any particular time.

The timeout should be increased, or the operation should be made faster so it does not time out.

(I am assuming timeout is the reason here. We just get told it failed.)

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Answer by Walter Roberson
on 24 Sep 2015

If you attach an image file using the paperclip and the file extension is not in lowercase, then when someone requests the file, the content will be transmitted as text/plain instead of as an image file.

If the exact same file is attached with the exact same base name but with .jpg in one case and with .JPG in the other case, then the .jpg will be transmitted as image but the .JPG will be transmitted as text. (The problem happens for other image types as well.)

  3 Comments

Mayhaps this explains the case in an interaction in another thread wherein an Excel file would only open in text? (Didn't notice the case of the extension...)

ADDENDUM The extension in the aforementioned attachment was lower case but the Excel file link opened as text. Mayhaps the poster screwed it up; I don't know precisely how to tell it that's so or not...

(Answers dev) This issue was fixed in our release on 3/10/2016.

I still can't download any files other than text from the link with Firefox; it converts .mat/.xls/etc. to text rather than copying the content. Not sure on whose end the fault lies; apparently maybe Firefox's as Chrome seems to work...but it has its own other "issues" so still haven't really adopted it.

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Answer by Walter Roberson
on 24 Sep 2015

URLs of the form <link description> can end up rendering improperly when displayed, but not when previewed. For example

<http://www.mathworks.com/support/contact_us/?country_sort=UK&geoloc=United%20Kingdom>

The proper rendering is without any visible < or > . The actual rendering has a leading < and has the > in regular font color instead of link color, indicating that it thinks the URL has already closed.

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Answer by Walter Roberson
on 5 Oct 2015

Currently tabs in input show up as nice whitespace for unformatted sections, but put in no space at all for formatted sections. I do not know how people are getting the tabs generated in the first place, but they most frequently show up in vectors or arrays of numbers. Typically in code that the user didn't {} Code . So the innocent volunteers come along, highlight the code, format it, save... and then have to go back and manually change the tabs to spaces because the code is now unreadable :(

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Answer by Walter Roberson
on 13 Oct 2015

If there is a Question, and the Question has a Comment which has attachments, then when the Question is edited, the page that is painted upon Submit does not have the attachments to the Comment. The attachments are still there, but the page needs to be repainted to see them.

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Answer by Walter Roberson
on 8 Dec 2015

I am not able to add an Answer to This Other Question

I was able to add a Comment, but not an Answer. I tried multiple times; each attempt timed out. Short answers had the same problem as long. Trying the uk mathworks site had the same problem.

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Answer by Walter Roberson
on 17 Dec 2015

You can post a reference to the "cursive" tag by referring to

http://www.mathworks.com/matlabcentral/answers/?term=tag%3A%22cursive%22

But if you change the "www" to "uk" then the reference will be considered to be potential spam. The same thing does not happen for the tag "ocr" for example,

http://uk.mathworks.com/matlabcentral/answers/?term=tag%3A%22ocr%22

I generated the tag reference by dragging from the Tags section of a post into a Comment while I am connected to the uk Answers server (there was a period when it was more reliable and faster than the US server so the UK one is the one I bookmarked.)

  1 Comment

It looks like tags that are dragged are now automatically generated with the main site instead of localized.

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Answer by Walter Roberson
on 14 Jan 2016

A few days ago, sometime this calendar year, there was a Question about getting the File Exchange contribution mp3write to work in newer versions of MATLAB. I answered, and then later had to explain the answer further.

Now just after the January 13 2016 upgrade, the Question is gone, cannot be found by searching. Google cannot find it either, so it did not necessarily vanish today.

Keywords from the discussion included mp3write, wavwrite, audiowrite, and "lame" (the name of an external program that mp3write invokes to convert a temporary .wav file into mp3)

  2 Comments

A few days ago I replied to http://uk.mathworks.com/matlabcentral/profile/authors/7367265-solai-rajs about reading mha files. Now the search engine cannot find any reference to mha since 2013 (except one I just made a moment ago.) Google cannot find my response either. My first request to look at that author's questions showed only their most recent question, but just now as I went back I was able to find their previous work and tracked down the unsearchable question as being http://uk.mathworks.com/matlabcentral/answers/263090-need-a-dataset-for-brain-tumor-images

(Answers Dev) This issue has been resolved.

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Answer by per isakson
on 11 Mar 2016

I just noticed a minor feature.

Searching for   classdef -tag:oop   returned 361 hits, which is reasonable. However, restricting the search to   MATLAB   returned 27833 hits. Or I missed the intentended behaviour.

  2 Comments

The behavior you’ve identified isn’t a feature and we (MathWorks) are actively working on a solution. We’ll reply back to this thread when we release a fix. Thank you for helping to improve MATLAB Answers. (Answers Developer)

(Answers dev) This has been fixed.

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Answer by dpb
on 12 Mar 2016

As of last day (or perhaps two?) every reply Answer/Comment elicits the "Leave Page?" popup even when have SUBMITted the response.

  5 Comments

I have this (with Chrome on Windows 10) when I cancel editing a comment and submit it as an answer instead. Not really a problem, but still noticeable.

I see that as well, on Firefox, especially if I first compose as a Comment on a Question, grab the text and cancel the Comment and paste to become an Answer and submit. When I go to leave the page afterwards it typically asks me whether I am sure I want to leave the page.

ditto...not fatal but initially would raise concern hadn't saved. Since learned it is just a bug that 'Cancel' isn't clearing the flag to hit the 'Remind' path on exit.

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Answer by Kyon
on 9 Apr 2016

its too hard to dissect examples and learn their variables

also Floating Bar Plot Graph should be added to the "Create & connect a viewer >DSP"

  1 Comment

I believe you posted about that in the What Frustrates You thread. This present Question is about the Answers system itself (the forum software), not about MATLAB.

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Answer by per isakson
on 15 Apr 2016
Edited by per isakson
on 15 Apr 2016

Background: The threads of comments, in which I participate, are not always effective. One reason (certainly not the main one) is that it's difficult to refer to a comment, which is a less than 24 hours old. And it's so tedious to be referred to "my comment above".

It's possible to refer to "per isakson on 13 Apr 2016 at 20:40", but not to "per isakson about 17 hours ago", since it isn't static.

Proposal: Add some kind of sequence number in the heading of each comment. It's short and easy to write and read.

  12 Comments

(Answers dev) A copy to clipboard button has been released for the link popup. The Safari browser does not support copy to clipboard yet. Their next version of the browser is supposed to add support and then we will add the button for safari.

Very nice addition. Thank you. By the way, it didn't work at first but started working after I restarted Firefox. Maybe you upgraded it after I had already launched Firefox. Who knows, but at least it's working now and it will be helpful.

(Answers dev) I'm guessing restarting firefox cleared your cache. Enjoy!

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Answer by Walter Roberson
on 15 Apr 2016

I have noticed that on multiple days recently, there have been activity on over 300 Questions. I counted 325 one day last week and yesterday I could see that it would have had to be at least 300.

That volume is, I must say, too high for anyone to keep up with, even just to read the material without answering it. I gave up trying to read everything when the volume hit about 150; now I don't even always read everything I have contributed to if I see that one of the other high quality volunteers has responded. I am probably the person who keeps track of more of the discussions than anyone else does, but it takes me many hours per day. A couple of days ago I stopped reading at 5 AM my time caught a bit of sleep, checked again at 9 AM (darn phone calls!), and found that there had been more than 50 new Questions just in that 4 hours.

I am wondering if it is time to create some kind of structured sub-categories to make it easier for people to find and follow what they are interest in without getting swamped with everything else?

Tags go part way towards that... except that most people do not use tags well... and you have to remember not to delete the tag: selection if you want to search within a tag... and tags are not given much prominence in the interface.

I am not at all certain how best to proceed. But one idea: if a user had selected a Category (that might be implemented as a tag) and then Asked a question, then the tag for that category could be automatically filled in (the user would be allowed to remove it), so that the question would default into being part of the category too.

Actually that might work, re-branding tags as Category, auto-fill the tags according to the Category the user currently has selected, and give a more prominent interface for the user to select Category and to "refine".

  0 Comments

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Answer by Walter Roberson
on 15 Apr 2016

Especially when I am curating tags, in Answers or in File Exchange, I would like to be able to see a number of items at one time, each of which had a brief "preview" (e.g., the first two or so lines) so that I can more easily ignore the entries that are irrelevant to my then-purpose.

Along with that: when searching in File Exchange, I would like to be able to see the complete list of Tags for the entries, not just 3 or 4 of them. That would save effort of having to visit each entry only to discover that it already has the Tag that I am trying to add consistently.

I have noticed that especially in File Exchange it can take a bit of time after tagging before the tag shows up in the summary (or sometimes even before the tag is considered present for the search.) When I am trying to systematically go through entries, perhaps searching on different terms, then the delay does tend to result in my having to recheck entries.

When I am curating tags like that, it would also be useful for the tags to show up on the pages of the individual source files so I do not have to chase to the root of the File Exchange Contribution to determine whether it is already tagged.

Some days what I would really like is an interface where I could say 'show me a list of the current tags... okay, take all the tags that say "#newton-raphson" and do a bulk change to "newton-raphson". Delete all of the "matlab" tags...'

Speaking of which, I noticed that the characters allowed for tags in File Exchange are different than for Questions, with "-" being automatically removed from the File Exchange tags, leaving "newtonraphson" ??

I have been wondering for a while why it is that in Answers, the tag "steganography" never auto-fills as I type it in? I always have to type it in in full?

  5 Comments

They actually told me that. And the tags on the "Home" screen are also manually entered. They just looked at a distribution of tags and took the top 10. I was asking them about why tags like "MATLAB" and "matlab code" and "matrix" were even on there. I thought it must be automatic, and they said no, they just took a snapshot in time (last October) and manually entered them.

For the Home it does not surprise me that the tags are done manually, but for the auto-prompting I would have thought it would be automatic. Or, I guess, at least semi-automatic at every update of the css .

(Answers dev) My fault for the confusion, sorry. Top tags on the home page are manually curated to avoid spam. Tags autosuggest, when asking questions, is auto-populated from the 200 most used tags. We are looking into how to improve what goes into the auto-populated list.

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Answer by Walter Roberson
on 13 Jun 2016

Long tokens can end up running off the end of the right hand side of the page. For example in http://www.mathworks.com/matlabcentral/answers/246999-probability-1-2-with-matlab-random-number-generators I had reason to quote the number

1.11875110968003101149364479731944007560647073019006103414072774998094175776051774574042623356006417050422674048837541521801190921428379539907292472443881270372218911884781720662428061113996528944121698315475958721481213258908827606800475302345048341134463455488980253230058090875047749429690054193911503277704529859897485122299798376843682490289211273193359375e-154

which goes right off the right hand side.

  3 Comments

Oh that the rest of the text/code would fill the rest of the line! :(

It appears this has been fixed.

dpb