Mariner

6 years, 190 days


These are Posts that have been published by Mariner

Labels on plot axes

January 30 2008 by Mariner 622 Maple
The third example on the Plot Tickmarks and Gridlines help page - ?plot,tickmarks(tickmarks) - shows how to put labels at specific locations on a plot axis. But I couldn't find anything in the help pages about altering their font. However by changing the labels to names (enclose in left quotes, instead of double quotes) their font could be set using the axesfont option.

Perhaps something could be added to the example mentioned above. In the longer run though, all the help pages for plots need to be re-written: at present they resemble an untidy scrapbook.

J. Tarr
Jacques posted a link to an interesting article in the New Yorker about feature creep. Perhaps we should ask whether Maple is suffering from this malady, but before doing so we really need to answer the question "what is Maple for?" So here's a place to say what you think Maple's main purpose is/should be. Here's my shot: Maple's prime purpose is to help teach math. J.Tarr

Eye strain

April 28 2007 by Mariner 622 Maple
I find that reading lots of help pages causes eye strain. A way of reducing this that works for me is to change the background color of the help pages from white to yellow. This can be done by setting HelpBGColor=255,255,224 in the ini file. On Windows XP the ini file will be found at C:\Documents and Settings\Joe User\maple9.ini or maple10.ini. For Maple 11, the file can be found at C:\Documents and Settings\Joe User\Local Settings\Application Data\Maple\11\maple.ini

When to begin Maple

April 25 2007 by Mariner 622
At what age do you think students should start learning and using Maple? What are your reasons?
Having looked recently at a suite of engineering software in use, I wondered whether engineers would need maths for much longer. Of course they’ll always need sufficient for business purposes, but my guess is maths will become unnecessary for engineering in much the same way as it’s unnecessary for weather forecasting. There would probably be a residual role for maths in engineering research, but not in the mainstream, and that would have huge implications for schools and universities. How do those engaged in teaching maths to budding engineers see the future?

Search

February 26 2007 by Mariner 622
The search engine for Maple 10's help pages could be greatly improved if it used fuzzy techniques. At present, unless the query is spelled correctly, the answer is No Matches Found. Perhaps Google could be persuaded to provide an engine... but without ads please! J. Tarr

Moore's law

February 12 2007 by Mariner 622
I came across this news item: A chip with 80 processing cores and capable of more than a trillion calculations per second (teraflop) has been unveiled by Intel.
There was a discussion on comp.soft-sys.maths.maple about how well Maple obtains the Jordan Normal Form of a (square) matrix. LinearAlgebra[JordanForm] is limited to matrices of integers, so it can make severe demands on computer memory; furthermore, in practice, one is often confronted with floating point data. However, linalg[jordan] operates on matrices of both integer and floating point data.

Implicit or Spherical

November 20 2006 by Mariner 622 Maple
The following equation cannot be plotted correctly in the usual 3 dimensional plot with Cartesian coordinates. eq := (x^2+y^2+z^2-1)^3 - x^2*z*3 - y^2*z^3 = 0; Either a 3 dimensional implicit plot, or a spherical coordinates plot is needed. What surprised me was how long Maple 10.06 took to produce the latter with very roughly the same amount of detail as the former: 454 s versus 0.7 s. It seems as though one should always prefer the implicit plot to the spherical plot if the 3 dimensional Cartesian plot fails. I would be grateful for any thoughts about this and any improvements to the code below. (Apologies for not posting the worksheet – I think that File Manager might object to its 10MB size!)

Help

October 23 2006 by Mariner 622
Many people seem to find difficulty in getting the information they need from Maple's help pages - witness the questions asked in MaplePrimes. Perhaps the moment has come to re-think the help search methods and rewrite many of the help pages.

May I suggest that Maplesoft gives this priority in the coming months?

J. Tarr
The question of how to scale the x-axis with intervals of Pi has been raised on a number of occasions. Inspired by a contribution from Will, I produced the procedure and examples shown in the worksheet attached below. Hopefully, Maple users will find it useful. J. Tarr View 724_Pi axes.mw on MapleNet or Download 724_Pi axes.mw
View file details

Curve Fitting Package

November 22 2005 by Mariner 622

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One might expect to find all curve fitting tools in the Curve Fitting Package, but some are in the Optimization or Statistics Packages. Would it be possible to bring them all together?

J. Tarr
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