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| bio | website | |
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| location | ||
| age | ||
| visits | member for | 1 year, 3 months |
| seen | 1 hour ago | |
| stats | profile views | 77 |
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2h |
answered | Longest string of special characters |
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2h |
comment |
Longest string of special characters I really do not see any usage for this question but I think the sequence can be arbitrarily long. What do you think about this one: # + # + # + # + # + # + # + # + # + # + # + # + # + # + # + # + # + # \
+ # + # + # + # + # + # + # + # + # + # + # + # + # + # & /@ {1, 2, 3} |
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1d |
accepted | Projection of a set of 4D points to the 3D space |
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1d |
comment |
Projection of a set of 4D points to the 3D space I updated the point set. It should be ok now. |
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1d |
comment |
Projection of a set of 4D points to the 3D space Rounding errors, I guess. I get the same result as yours when I copy the points from the webpage. Could you please explain a bit about the mathematical details of how your code works. |
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1d |
revised |
Projection of a set of 4D points to the 3D space corrected rounding error in points |
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1d |
comment |
Projection of a set of 4D points to the 3D space I mean "the distance as measured on the hypersurface". |
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1d |
comment |
Projection of a set of 4D points to the 3D space Thanks Michael for your rapid answer. I know pretty much nothing about linear algebra. I get 4 for MatrixRank[points]but 3 for MatrixRank[# - First@points & /@ points]. What does it mean? Doesn't it imply that they lie on a 3D hyperplane? |
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1d |
comment |
Projection of a set of 4D points to the 3D space You should project the points into 3d first. |
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1d |
asked | Projection of a set of 4D points to the 3D space |
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1d |
awarded | Nice Answer |
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1d |
comment |
Having used Mathematica as a “gateway” language, where to from here? About the second part: I agree with you to some extent about the Mathematica's different behaviour. But just assume you already know about the fast-fail nature of some languages like Java, C++, C#, or Pascal and then you move to Mma. You might be able to change the Mma's slow-fail behaviour by a bit of extra effort. |
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1d |
comment |
Having used Mathematica as a “gateway” language, where to from here? @Stefan: Thanks Stefan. About Perl: I was surprised by Perl for a while before I knew Ruby. Believe it or not, Perl's programs are messy and unreadable. Yes, you can convert a 50 lines C++ program to a 5 line Perl code. But, if you want to write large scale maintainable programs with perl, you would be disappointed. Go read about Ruby ruby-lang.org/en/about. Larry Wall (the creator of Perl) is the hero of Yukihiro “Matz” Matsumoto (the creator of Ruby). |
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1d |
comment |
Having used Mathematica as a “gateway” language, where to from here? I love Scala but I don't know really so much about F#. Scala is quite a complicated language since it combines OO with functional programming (and it does it in a good manner). Learning Scala is not as easy as learning Python for sure. About F#, you should ask yourself if you want to put your eggs in Microsoft's basket or not. |
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1d |
answered | Having used Mathematica as a “gateway” language, where to from here? |
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May 22 |
revised |
Dynamic graph visualisation using JLink/Java and GraphStream added 1630 characters in body |
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May 21 |
comment |
Dynamic graph visualisation using JLink/Java and GraphStream Nice answer Todd. I learned new things from your answer, +1 for not repeating useless details. |
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May 21 |
revised |
Dynamic graph visualisation using JLink/Java and GraphStream added 473 characters in body |
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May 21 |
answered | Dynamic graph visualisation using JLink/Java and GraphStream |
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May 21 |
comment |
How to insert big list of Data in DB? I updated the answer. |
