MaplePrimes Posts

MaplePrimes Posts are for sharing your experiences, techniques and opinions about Maple, MapleSim and related products, as well as general interests in math and computing.

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  • I notice that when I am in Help and select something in quotes, such as "Teal", the editor will select only Teal, not "Teal", when I double-click Teal. This is what I expect.

    If you're writing an external library to be called from Maple, then you have the following problem. The user wants to interrupt your code. They are valiantly pressing control-C or the stop button in the Maple GUI, as your code grinds their machine to a halt. What do you do ?

    Hi everyone, i've got a strange question: I wanted to use monte carlo method to count the volume of the ball i 've choosen a [-1,-1], [1,1] square and ball of radius 1 to do it. i wrote something like this: with(Randomtools): k:=1000 Generate(list(rational(range=-1..1)+I*rational(range(-1..1),k)): map(abs,%): select(verify,%,1,'truefalse'('less_than')): evalf(nops(%)*4/k) the result is ok (3.14 in the first try ;) ), but I wanted to do a little "upgrade" and have written a little shorter formula: (now doing "abs" is not necessary) with(Randomtools): k:=1000

    I need to use plots (I think) because I want to scale the plot image and I can't do that (as far as I know) unless I use a plot component.

    BUT, I get a border around the plot. I'd like a borderless plot just like the inline plot.

    ~Rich~

    What is the best way to include Maple output in this forum.  What are the steps necessary.  I use to copy the output from  my worksheet and paste it as Maple code, and it would work.  I have not been able to do this any more.  I am missing something.  Is the format Filtered HTML or Worksheet HTML?

    Regards,

    Georgios

    Hi everyone,

    For my research, I needed a procedure to calculate an interpolant respecting the monotonicity of the given data. The curve fitting package of Maple 11 didn't help.

    I'm pasting my code below.  I hope it helps some of you too.

    Cheers,

    Ozgur

    PS: Thanks goes to Joe Riel for his help.

    I have found that once I have "ugraded" to AVG Free 8 (the antivirus of Grisoft) Maple 12 Classic GUI no longer finishes starting: the splash screen remains, the red button is on, pressing it issues "You are in the middle of a computation. Do you wish to interrupt it?". Pressing it gives me a non responsive GUI. And the task manager is required to kill the zombie proceses that remain after closing the GUI.

    I'm getting the following errors when installing Maple 12: 5/28/08 3:45:47 AM [0x0-0x26026].Maple12MacInstaller[471] 2008-05-28 03:45:47.676 IAAuthentication10_4[477:10b] CFPropertyListCreateFromXMLData(): Old-style plist parser: missing semicolon in dictionary. 5/28/08 3:45:47 AM [0x0-0x26026].Maple12MacInstaller[471] 2008-05-28 03:45:47.683 IAAuthentication10_4[477:10b] CFPropertyListCreateFromXMLData(): Old-style plist parser: missing semicolon in dictionary.

    It's been a while since I've updated my blog, but the recent Maple 12 release gives me a good opportunity to talk about some of the features I'd been working on for the past months. A few people on MaplePrimes had asked for more details about Maple 12, so I'll start by saying a bit about the new polar axes. A lot of this work was done by my colleagues in the GUI Group and they may have additional interesting things to say about the feature.

    In previous versions of Maple, you could draw polar plots using the plots[polarplot] command or with the coords=polar option, but these were always displayed with Cartesian axes. In Maple 12, polar axes are displayed by default, as seen here.

    plots[polarplot](1+cos(theta), theta=0..2*Pi, axis[radial]=[tickmarks=5])

    plots[polarplot](1+cos(theta), theta=0..2*Pi, axis[radial]=[tickmarks=5])

     A number of new options were added to the polarplot command so that you can customize the axes.  The most useful ones are the axis[radial] and axis[angular] options. These work like the axis[1], axis[2] and axis[3] options available for general plots, and you can use them to control color, tickmarks and other properties of the radial and angular axes.

    Typeset math on plots had been introduced in Maple 11, and now we can take advantage of this with nice axis labels, in multiples of Pi, on the angular axis. These labels appear by default, but of course, they can be customized with the axis options. The plot/typesetting help page provides information on how to add typeset math to plots through the command line. There are also interactive ways to do this, using the context menu.

    You can add polar axes to plots created by commands other than plots[polarplot], by using the axiscoordinates=polar option. However, not all the options offered by plots[polarplot] are available generally. Here is an example using plots[implicitplot].

    plots[implicitplot]([x^2+2*y^2 = 1, x^2+1.5*y^2 = 1], color = ["Blue", "Green"], x = -1 .. 1, y = -1 .. 1, axiscoordinates = polar);

    plots[implicitplot]([x^2+2*y^2 = 1, x^2+1.5*y^2 = 1], color = ["Blue", "Green"], x = -1 .. 1, y = -1 .. 1, axiscoordinates = polar)

    It is also possible to get the pre-Maple 12 Cartesian axes back with polar plots, by adding the axiscoordinates=cartesian option.

    The following is extracted from Jakob Nielsen's weekly newsletter on usability.

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

    While in London for last week's conference, I stopped by the British Museum. Among other exhibits, I saw King George III's collection of antique coins. Because this was part of an exhibition about the growth of knowledge during the Enlightenment period, the collection was shown in the way the King had organized it.

    His Roman coins were sorted chronologically, which is the same system the Museum uses to this day. But the Greek coins were sorted alphabetically according to the name of the ruler depicted on the coin. This meant that coins issued at the same time would be in widely varying parts of the collection. It also meant that coins minted in the same city state would be dispersed across the collection. Not surprisingly, the British Museum no longer uses George III's system for its collection (except for this special exhibit).

    Information architecture lessons:

    1. Alphabetical order is usually a bad way to structure items.
    2. For a better structure, you need to understand the underlying dimensions of interest (the King didn't know enough about ancient Greece to correctly place the coins in time and space).
    3. New info may cause you to restructure things for better access.
    4. Two or more structuring principles may be better than a single one.

    I have uploaded a new version of the module Quantavo

    It is a set of procedures (Maple module) for Quantum Optics and Quantum Information calculations in the optical Fock basis)

    More can be found in this link

    Any questions or feedback welcome.

    I believe that the basic language in which the Maplesoft writers

    code Maple is Java.  That means that the programmers at Maplesoft

    had to have written TONS of Java classes, such as LinearAlgebra,

    with lots of methods, such as resultants and determinants.

    I would think they would have posted these Java classes into the Java library

    I believe that the basic language in which the Maplesoft writers

    code Maple is Java.  That means that the programmers at Maplesoft

    had to have written TONS of Java classes, such as LinearAlgebra,

    with lots of methods, such as resultants and determinants.

    I would think they would have posted these Java classes into the Java library

    Would you Try it...

    http://www.mechofmat.com/examples/ex01/msetup.zip

    Current Trial Serial Number
    32FSXUT-BCTLFQ4-QEU3Z95-FE7ZM

     

     

     

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