Alec, do you mean to redraw the graph from scratch? That would be quite inconvenient because it is produced at the tail-end of a long series of symbolic calculations. But exporting the data created by Maple using, say, getdata and manipulating that data in Mayavi would be acceptable to me. Would that be easy to do? Would you mind showing a minimal example?

thanks in advance,

P.S. Off to a long-distance flight, may not be able to revisit the site for 48 hours or so.

P.S.2 it would be great if I could easily check it from my phone using some mapleprimes app! but currently using mapleprimes via an internet browser from the phone is very, very impractical.

@bthur 

nice to see a quick response!

any plan to give comments a higher status than their current nearly-non-existent one? (e.g. being listed, being voteable)

if you'd like to experiment with the 3D graphics above, I've copy-pasted into a document hosted here:

http://ifile.it/4ekx7yg/plot3d.mw

(couldn't upload to mapleprimes)

Here is what I get with plotsetup(gif, etc.):

Here is what I get if I first Manipulate the Scale by right-clicking to enlarge the object, and then export by right-clicking as gif:

a great feature I was unaware of, my comment should bump this up and hopefully benefit others who like me didn't know about this.

a great feature I was unaware of, my comment should bump this up and hopefully benefit others who like me didn't know about this.

I wanted to test if adding my own message to my favorites would increment my rating by 5, as explained by bthur above --- cheeky me! but it turns out that if I try, I get a "you can't vote on your own items" message.

It's obviously good that adding my own contributions to my list of favorites does not raise my rating, but I would have thought it useful to have been able to add my contributions to my list of favorites, since my messages are closely related to my centres of interest. And especially since comments cannot be added to favorites (hopefully a temporary situation), with the result that if I ask a question which receives only comments, then I cannot add any link to it whatsoever to my favorites.

I have asked myself this question before. I didn't find an answer, but I had an idea I haven't had time to follow up on. The idea is to run your program within a procedure that keeps track of time. If the calculations take longer than a threshold you specify, then the procedure stops. Or even more advanced, the procedure pops up a button that you could press to stop or that you could ignore. I read an exchange on mapleprimes where related ideas were discussed, perhaps it could be adapted.

If my suggestions is completely off topic, please ignore it.

References:

http://www.mapleprimes.com/questions/37147-Doloop-With-Time-Delay-To-View-Sequential-Nature

http://www.maplesoft.com/support/help/Maple/view.aspx?path=fclose

As Alec has pointed out, it may be possible for some users to edit messages they did not themselves write. This feature was available a few months back but discontinued, it has pros and (obvious) cons --- it's great to remove spam, to help newbies with formatting problems, but clearly one must not abuse the privilege ;-)

wikipedia and similar websites have a "signature" sytem where edits can be signed and dated by users, this may well be an "overkill" for mapleprimes, but anyhow just mentioning it in passing.

P.S. I submitted my message the old-fashioned way and it did not get deleted this time, so hopefully that means the problem both Alec and I reported yesterday may have been temporary.

I welcome this upgrade, as I'm sure many others will. Saving favorites, listing messages on the fly, this is great. I look forward to the further improvements you mention.

P.S. Is it related to the update or is it me? my last two comments were entirely deleted when I pressed on submit, resulting in an empty message, so I had to retype them.

@acer 

I don't seem to be able to add your comment as a favorite. If this is a feature of the update, it would be disappointing from my point of view since I tend to like your comments rather a lot.

@pagan 

It wasn't all that clear to me on a first reading that the op necessarily needed to work on symbolic solution, but if that is the case then of course my suggestions are not going to be terribly helpful  :-(

@pagan 

It wasn't all that clear to me on a first reading that the op necessarily needed to work on symbolic solution, but if that is the case then of course my suggestions are not going to be terribly helpful  :-(

thanks acer, once again, great tip

... must not forget to remember forget after remember.

Perhaps the remember option is best left out altogether if the parameter of dsolve takes a value in a list, e.g. when applying seq() to the output of dsolve, since, as it is set up, the remember table does not distinguish different values of the parameter.

... unless the whole thing was wrapped in a procedure with the option remember such that the remember table stores the output of dsolve separately according to the parameter values used? by defining a procedure SOLp in terms of SOL('parameters'=[p=pp]), one would get something like this?

SOL(0.7);
   [t(0.7) = 0.7, x(t)(0.7) = 6.5339852309512665,  y(t)(0.7) = -2.870600695517089]

SOLp(0.7,3.4);
  [t(.7,3.4) = .7, p(.7,3.4) = 3.4, (x(t))(.7,3.4) = 6.53398523095127, (y(t))(.7,3.4) = -2.87060069551709];

This does not seem to be terribly urgent. Thus for the time being I'm content with using forget prior to changing parameter values.

@acer 

I agree with acer's comments and second the suggestions. It's a real shame that old messages (posts,questions,answers, blog posts, whatever they may be) have lost their formatting. I personally search the archives of mapleprimes before posting questions. And while there is a natural amount of depreciation due to product upgrades, it's a shame that messages as recent as 2010 or 2009 have lost their formatting, have become ordered in a seemingly (partly rank-dependent) random order, AND the bit I want to add here is that the loss of images I mentioned above in (http://www.mapleprimes.com/posts/120904-This-Sites-Usability#comment121152) appears to be quite general.

Here's an example of how things can go wrong:

http://www.mapleprimes.com/questions/40542-Graphing-A-Moving-Point-About-A-Spehre

1. formatting lost.
2. images lost (file or directory not found, e.g. http://www.mapleprimes.com/files/97_sphere_1.jpg)
bonus remark: 3. spelling mistake in title, making the search of archives even more difficult...(could be avoided if a spell-checker were available)

On the subject of quick fixes: since the identity of many messages has been lost, e.g. questions, posts, comments, blog, etc, why not do away with it altogether? I personally don't find the distinction useful at all. I often post/question/blog/comment all at a time. It's also messing up the voting scheme (or scam, as Alejandro would perhaps say). I would have all messages voteable, including comments and questions. But I would allow mapleprimes members to opt to have their mapleprimes ranking either disabled or invisible (the latter being easier, since it could be reversed in the future).