This post is a further development of my earlier question in reply to John's post. I have implemented a basic version of the CANDECOMP/PARAFAC algorithm referred to on Wikipedia and described 

There are a few ways to view the source of a Maple procedure, such as by using the commands  showstat and print. And these work as usual for the exports of a module. But for procedures which are declared as local to a module these methods do not work right away since by default modules' contents are opaque.

One way around this is to change a setting, by issuing kernelopts(opaquemodules=false) prior to attempting...

I selected the whole document and expanded the document blocks. There near the top of the document were nine copies of "plots[interactive]()" all in a row. Deleting them fixed the problem. Seldom is a fix so easy. Many thanks.

If you want to know what ::uneval does (it's an advanced option for procedure parameters), you can look at the uneval section of ?parameter_modifiers.  It is useful when you want to write a function which works on raw user input rather than on evaluated input.  This is quite tricky, and fraught with danger, and should only be used as a last resort;  but sometimes it really is rather handy.

I've been making some use of the Maple Cloud for a while now, and thought that I'd share some comments.

So far, it's been quite useful to me, and I like it. This surprised me a bit. I expected not to find it useful, and to dismiss it with an old-timer's "Bah, humbug... as useless as Maple+twitter!" But, to the contrary, I've found a use for it; a need that isn't otherwise...

A new edition of The Mathematics Survival Kit – Maple Edition is now available.  It contains 25 new topics, which were created in response to requests from readers of the first edition of the book. New materials range from basic operations such as factoring and fractions, to graph sketching, vectors, and integration.

The Math Survival Kit gives students the opportunity to review exactly the concept or technique they are stuck on, learn what they need to know,...

Let's compare the performance of two methods of computing the inverse of a large datatype=float[8] Matrix.

The two methods are that of calling `MatrixInverse`,...

If you want better performance then don't use 2D Math mode to enter procedures which call  `.` (dot).

The following timings are not the result of the order in which the cases are performed. The timings stay roughly the same if the blocks delimited by restarts are executed out of order.

Important new updates are now available for Maple T.A. 6.  These updates improve performance and stability in areas related to the gradebook, assignment editor, question repository, course module import, and Blackboard and MapleNet integration.

In addition to these improvements, Maplesoft has also released language packs for French and Traditional Chinese. These language packs are a result of the new translatable interface in Maple T.A. 6. If your institution requires...

This is the third post in a four-part series; the earlier posts are Generating...

This is the second post in a four-part series that started with this post: Generating...

Maple's Statistics package contains many predefined probability distributions; well-known ones such as the normal distribution and lesser-known ones such as the Gumbel distribution. For these distributions, we ship efficient algorithms that can quickly generate a large number of sample points. To generate a sample of size 10⁶ of both of these distributions, and print the time it took to do this (in seconds), you can run the following:

with(Statistics):

Consider the following C code:

I recently noticed that the symbol font in my maplets was not appearing correctly when I ran them using Maple 13 or 14 on my Windows 7 laptop. Additional testing showed that while this was pretty standard on Windows 7, it happened on some, but not all, Windows XP systems.

By a stroke of fortune, my local inquiries about this problem suggested that I look at the Clear Type effect that can produce sharper results, particularly on newer LCD displays.

Before going into too many details, let's look at an example. Here's the code for a simple maplet:

restart:
with(Maplets[Elements]):with(Maplets[Tools]):
StartEngine();

alphabet := "abcdefghijklmnopqrstuvwxyz":

TestFont:=Maplet(
  Window[mainWin](title="Font Test", [
    [ "The two lines of text should show the alphabet in the Times font and then\n the Symbol font, but sometimes the Symbol font is not correctly rendered." ],
    [ "Times ",    Label( alphabet, font=Font("Times",18) ) ],
    [ "Symbol",    Label( alphabet, font=Font("Symbol",18) ) ],
    [ Button( "Done", Shutdown() ) ],
    [ "Version: ", Label( convert(interface(version),string) ) ]
  ]
  )
):
Maplets[Display]( TestFont );

Copy these lines to a Maple worksheet (or document) and execute them, or save them to a text file with file extension .maplet, then double click on the file. The maplet should display two copies of the alphabet, the first with Times Roman font, the second with Symbol font. (The version of Maple running the maplet is given at the very bottom of the maplet.)

If you are running Maple 12 or older, I expect you'll see two different versions of the alphabet, like this:

If you are running Maple 14, I expect the line that should be in Symbol font will be in a poor quality Latin font, like this:

I can't predict which outcome you will see if the maplet is run in Maple 13.

What controls this behavior is the "effects" setting for the appearance settings for your display. If you are using the Clear Type effect, you will not see the Symbol font.

This problem is appearing now because up until Windows 7, the ClearType effect was not the default.

Along with the change in the default effect, the way in which users control the effect changed with the introduction of Windows 7.

Prior to Windows 7, access the Properties popup by right-clicking on your desktop. Then select the Appearance tab and click on the Effects button. In the second dropdown menu you can choose either Standard or ClearType. To see the symbol font (in Maple 13 and later), make sure this is set to Standard.

In Windows 7, go to the start menu and search for cttune.exe. Start the ClearType Text Tuner application. In the first popup window, be sure the Turn on ClearType box is unchecked. (For full instructions, including screenshots, please see http://www.sevenforums.com/tutorials/337-cleartype-text-tuner.html .)

When this effect is toggled, the effect changes immediately.

I can't call this a bug, but it is something that I think should be included somewhere in Maple's documentation.

Thanks for listening, I hope this is of use to someone else