@RolfMertig Yes, it indeed is common. All apps have the .app extension. The OS treats these directories differently and hides the contents. If you click on the directory, it opens the binary associated with it. This works very well for 99% of their users who will never have to look inside an app directory.
@RolfMertig Yes, but we are in a weird situation where they did yet another scan to see if anything but Mathematica can do the job they want, found out the answer was "no", and now have to think about what can be done in-house.
@RolfMertig yes, it's Directory. The default location is /Applications/Mathematica.app, not in /. Re: normal users, I wouldn't make that assumption... it's not prohibited by the OS and I have seen people use . in their naming conventions (instead of _ or - or spaces)
@Verbeia reminds me when I was a PhD student in germany: everbody would come and ask me about Mathematica. When I was Postdoc in Hollands, things were much much quieter. Just hide what you know ...
@Verbeia well, it's not really that simple. They also have to look at maintaining the code base... if you're the only person who knows how to use mma and developing/maintaining code is not in your job description, then they're certainly going to consider and reconsider switching (and most likely end up going with a .NET gui). What you can do with it is only one piece of the equation...
@Hypnotoad Yes exactly - I am sure that they would be able to maintain code given time and a bit of training. But there's also the issue of domain knowledge.
Considering my actual job, developing code is definitely not in my job description! :)
@Verbeia Try to talk them into CDF/webMathematica based. Check out greenformula.com/projects.php : there is a screenshot of a CDF (webMathematica generated) and a true webMathematica example with JS-sliders (not that I am a big fan of mixing PHP and webMathematica, but it can be done)
@RolfMertig What I'm going to suggest is a CDF simple GUI for one-panel graphs, and then full Mathematica with a palette interface for pasting code for more advanced users.
@Verbeia Good. And keep in mind that EnteriseCDF is going to be extremely cool: Sign a CDF in EnterpriseCDF as PlayerPro capable, but run it in Player (v9).
@RolfMertig btw, if you need some testing on mac, I can help you out. If all you need is some confirmation of various $Variable and OS options, you can just make an nb and write the output to a text file and I can run it send that to you.
@Hypnotoad Could you try on OS X Import["http://www.mertig.com/mathdepot/CopyRemote.m"] NotebookOpen@CopyRemote["https://dl.dropbox.com/u/38623/SE%20Uploader.nb",FileNameJoin[{$UserAddOnsDirectory,"SystemFiles","FrontEnd","Palettes"}]]
@RolfMertig They have very different underlying infrastructure and much simpler graphs (PS could you please delete that comment in a bit to maintain some anonymity?)
@Hypnotoad There is an alternative, using my little installer package (don't want to compete with @Leonid, but just like to do things as simple as possible for users and me). Could you test if this works on OSX? Import["http://www.mertig.com/mathdepot/Installer.m"]; InstallPalette["https://dl.dropbox.com/u/38623/SE%20Uploader.nb"]
The most recent posting of the Unanswered Questions Community Ad by Hypnotoad lists 349 questions as unanswered. This is nearly 10% of the total questions on the site. Some of the questions are genuinely hard, and that is reflected in the number of votes they have. But, most have 5 votes or les...
Does anybody known of a web-based university course entirely built with Mathematica? I mean one where the whole course (lectures/labs/exams) is presented in Mathematica FrontEnd form.
My point is that Mathematica is very user-friendly, supporting the principle "if you can visualize this data/pro...
I agree that it's broad and open-ended, and wouldn't object if it got closed. I would've voted to close as a regular user, but I'm not going to singlehandedly close it
Hmmm ... There can't be a "best" answer (objectively at least)
@Hypnotoad I'm not a purist, I'm just trying to protect the answers "for the future". In some future time, a few people may want to delete the question
There is scope for a good answer here... At the heart of the post is a hidden question that was never asked — "How can I use Mathematica to design a university course (i.e. presentation/mix of code and output/hiding ugly code/manipulate and dynamic considerations, etc.)". Refocusing it this way moves it away from a "list of examples" style to a more higher level "design considerations/project planning" sort of question which is a good fit and a good question.
In that same answer, there is scope for discussion on some of the topics in these presentations, and highlight what needs to be considered and where to find examples for it.
@Hypnotoad No,no. That was posted a few times on SO (the "how do I?" part) I've done it myself once. This is more specific, and perhaps more interesting. It's about "How others did it?"
I remember a very good answer by @simon explaining how he makes tests templates with Mma
if someone like to try my CDF and please let me know if they find any problems or something not clear. I need to submit this to demo project sometime and like someone to try it. 12000.org/my_notes/mma_demos/single_degree_of_freedom_responses/… it is simulation of second order system, with harmonic input and also impulse
The equations implemented by this demo are in documented in my page here: 12000.org/my_notes/dynamics_cheat_sheet/index.htm , first chapter. I do not use DSolve nor NDSolve. I use the actual analytical solutions.
@belisarius, yes. it takes more time, if one wants to make it look good and work well. I just wish the performance can be improved for the rendering. M is fast for computation, but I think it is slow for CDF display
Direct copy and paste to Cross Validated. Unbelievable. Are you actively trying to convince people that your questions are not being asked in good faith and demonstrate the fact that you ignore comments asking for their deficiencies to be corrected? — Oleksandr R.4 hours ago
btw, 51 questions and he still hasn't formatted a single one correctly... he got pissed that people were repeatedly telling him to format his posts properly, so he uses images (this is what he used to do initially)
@Hypnotoad Unfortunately, the diamond makes it difficult for you to apply the other usual correction measure: vote to close. I think a lot of his questions need just that.
@Hypnotoad voted to close that question as NRQ. the inability to copy the code is just causing havoc with my ability to understand what it is he is asking.
@belisarius I can't remember if where se goes, but el burro mas que tu!
@rcollyer On the contrary... I'm just avoiding commenting because he annoys me and I don't want to respond/get into a discussion. Besides, he's now managed to piss everyone off on this site that I no longer have to say anything =) His questions also easily attract 3-4 close votes and I finish with the fifth.
Please see this: sol = {E^(-0.035 t) (1.085 Cos[0.31 t] + 2.95 Sin[0.31 t]), -1.1 Sin[ 0.0 - 0.1 t]} Now I plot this, one time with Chop and another without Chop. Colors go away Plot[sol, {t, 0, 10}, PlotStyle -> {Red, Blue}] Plot[Chop@sol, {t, 0, 10}, PlotStyle -> {Red, Blue}]
do people think that CDF's are used in industry as much as they ought to be. Other than Java applets, I do not see anything close to CDF's. But Java applets are dead now. But I do not see many site that use CDF's either
One can't even run Java applets in browser these days. I struggled 3 hrs today and could not run the applets that came with Java JDK 7 update 10 on any browser.
@belisarius @rcollyer Logging in doesn't count... (visiting other pages does). So if you login and read off the titles of the 50 questions on the home page (which is what I did on my vacation), it doesn't count unless you click on at least one
2010-10-03 02:09:19 user accessed site
2010-10-02 06:32:30 login
2010-10-01 01:07:43 user accessed site
We see a login on 10-2 but no access to internal pages (login pages, along with a number of other homepage style pages, don't count as "access").
@belisarius Java applets used to be used for education. There are many sites that had java applets (which many do not work any more) but there are plenty there, many at schools site. I do not see the same with CDF's.
I just think many do not know about them. CDF's that is.
The "visit every day for a reward" has a really good effect on user retention... nearly half the ipad games implement some form of reward for visiting every 24 hrs. After 100 days, you're Pavlov's bitch
@Hypnotoad I think SE was the first enterprise that explored high tech & science guys vices. And they've done a great work. Perhaps the game industry precedes them by 15 years, but Jeff discovered a wide niche
Here is something quickly made, and similar to what you are after. You'll have to work out the details, though:
HotColor[ z_ ] :=
Which[
0 <= z <= 3/8, RGBColor[z 8/3, 0, 0],
3/8 <= z <= 6/8, RGBColor[1, (z - 3/8) 8/3, 0],
True, RGBColor[1, 1, (z ...
@belisarius To be honest, I didn't think it'd be this successful either... ~5k questions in 1 year! I remember that someone posted (on the closed proposal) a chart showing that SO received only 2k questions in 3 years, so a new proposal for mma will not be viable. I've seen questions and uses here that I never would've thought of. In a lot of ways, SO was restraining the community
any one knows what happed to the Maple proposal to make a stackexchange site just for Maple like for Mathematica? someone (may be rm-rf) posted a link to this long time ago I remember, there was one vote for it. but I lost the link. I am just wondering if there will be a Maple group here like Mathematica
Does anyone know the Mathematica code that will trace the graph below?
Here is the equation for the graph, a second order linear differential equation with constant coefficients:
Here is the graph traced by this equation:
Quote from the book "Times Series Analysis and Forecasting By Exampl...
it is hard for new users to use actually. I took a class where we had to use M, many struggled with the syntax. There is a steep learning curve that drives many away
also, functional style is not as common for many users.
@belisarius In idiomatic English usage, "average" is the word to use to informally convey "somewhere in the middle" — "Your performance is average", "The average rainfall is X", "On an average...". On the other hand, "mean", conveys an emphasis on the statistics and you'd use it when you're referring to sum(...)/N. Not to mention, in your usage above, "mean" could be interpreted as "nasty/rude"
@belisarius Yeah, that can be hard... Germans have the opposite problem — they probably also have a word for when a donkey computes the mean and they never know if the English "average" was calculated by an ass
@Hypnotoad Well, try to read it. A wonderful book Curiously, for a Spanish speaking folk half the book is trivial because we have two words for "quality", and the book uses 50 pages to explain to English readers the difference between them
Hello there, I need some help with Compile. I think I have the MinGW gcc set up correctly under Mathematica, though I keep getting `LibraryFunction::libload` and `Compile::nogen` errors when I try to compile to C. Any idea why? Here is my code:
LibraryFunction::libload: The function compiledFunction10 was not loaded from the file C:\Users\Z\AppData\Roaming\Mathematica\ApplicationData\CCompilerDriver\BuildFolder\uriel-3772\compiledFunction10.dll. >>
Compile::nogen: A library could not be generated from the compiled function. >>
By the way, the instructions in the documentation about how to make MinGW-w64 work are complete nonsense. You need to do a lot more, including regenerating libraries in GNU COFF format and editing the source code (MinGWCompiler.m). If you're interested in saving time I would recommend using Visual C++ instead.
@Mohsen Afshin Re fast GCD, how does one tailor that for e.g. primorials? I mean, if you know it's a primorial, then there's not much to do and you don't need a GCD for that.
@OleksandrR. Have you considered making that mathgroup post into a blogpost here on mma.se? I think it would make a wonderful blog post, could help some people and the mma.se blog could use the traffic as well:)
@OleksandrR. Thanks a lot again, I successfully set up the Visual C++ compiler, and it works now as a charm! One magnitude of speed-increase compared even to the WMV-compiled code, woohoo!
The most recent posting of the Unanswered Questions Community Ad by Hypnotoad lists 349 questions as unanswered. This is nearly 10% of the total questions on the site. Some of the questions are genuinely hard, and that is reflected in the number of votes they have. But, most have 5 votes or les...
2010-10-03 02:09:19 user accessed site
2010-10-02 06:32:30 login
2010-10-01 01:07:43 user accessed site
We see a login on 10-2 but no access to internal pages (login pages, along with a number of other homepage style pages, don't count as "access").
Here is something quickly made, and similar to what you are after. You'll have to work out the details, though:
HotColor[ z_ ] :=
Which[
0 <= z <= 3/8, RGBColor[z 8/3, 0, 0],
3/8 <= z <= 6/8, RGBColor[1, (z - 3/8) 8/3, 0],
True, RGBColor[1, 1, (z ...
Does anyone know the Mathematica code that will trace the graph below?
Here is the equation for the graph, a second order linear differential equation with constant coefficients:
Here is the graph traced by this equation:
Quote from the book "Times Series Analysis and Forecasting By Exampl...
