Reputation
Next tag badge:
819/400 score
77/80 answers
Badges
6 231 495
Newest
 Nice Answer
Impact
~1.1m people reached

2d
comment What do I need to know about simplifying expressions involving Symbolic Tensors?
One important thing to know is that not every function is supported. I haven't used this functionality much, so I might be wrong, but I think that Norm is simply not (fully) supported.
2d
comment Improving visibility of text in scanned image
You'll find many useful functions here: reference.wolfram.com/language/guide/SegmentationAnalysis.html
2d
comment Unexpected behavior of Set
No, I cannot reproduce it with suggestions bar turned on on M10.3.1 OS X. But maybe you're on a different version of the paclet updates, who knows. I think it's a bug that you should report. I doubt it's because you have the Chinese version, that should make no difference.
2d
comment Unexpected behavior of Set
Well, then you have the solution. Turn off the suggestions bar. It's clearly a bug. You should report it to Wolfram support.
2d
comment Unexpected behavior of Set
I cannot reproduce this problem at all, but here's something to try: permanently disable the suggestions bar, restart Mathematica, and try again. Does it work now?
Feb
2
comment No Way to paste a Picture from Clipboard under Linux?
It is Edit -> Paste, not Insert -> Picture. I just tried copying an image from a web browser and pasting it using Edit -> Paste (on Linux, Ubuntu) and it worked fine with M10.3.
Feb
2
revised While loop repeats itself using initialization cell
added 7 characters in body
Feb
2
answered While loop repeats itself using initialization cell
Feb
2
comment Entropy[…] doesn't calculate the entropy of a probability distribution? What does it do?
Entropy[list] is the same thing as Total[(-# Log[#] &) /@ (Values@Counts[list]/Length[list])]. Does this answer your question?
Feb
2
awarded  Nice Question
Feb
2
comment What would you ask Mathematica to do on a big system?
@pvanbijnen I don't know much about how modern CPUs work. I know that laptop CPUs slow down as they heat up, but I think (not sure) that this does not apply to server CPUs.
Feb
2
comment Diagnosing NDSolve misbehavior
Is there really a good purpose for treating it as a PDE (I guess with derivatives only in x)? If it is an ODE with a parameter, treat it as such. Treating it as a PDE will: 1. reduce the number of available methods for solving it 2. will force all α parameter values to be solved with the same time step, which probably causes the trouble. Define a function which has an argument α and solved the equation as an ODE only for that one parameter value. Alternatively look at ParametricNDSolve, which I believe does the same under the hood (with a few more advanced features to handle α).
Feb
2
revised What would you ask Mathematica to do on a big system?
added 1506 characters in body
Feb
2
answered What would you ask Mathematica to do on a big system?
Feb
2
comment How to implement JoinTo efficiently?
@M.R. The copy inefficiency is inherent to the concept of JoinTo, not a particular implementation of it.
Feb
1
comment Is the free Mathematica Trial Version a full version?
Last time I tried a trial version, it could not Export figures. I do not know if this restriction is still in place, it might not be. People have been complaining that they could not evaluate if Mathematica is good for making figures ... So as Yves says, best to ask WRI directly. wolfram.com/support
Feb
1
comment How to get the frequency information of an mp3 audio?
What if there are superimposed sounds of multiple frequencies (as is almost always the case)? Then a simple frequency(t) doesn't make sense. You may want to compute a spectrogram: mathematica.stackexchange.com/questions/4017/…
Feb
1
comment How do I disable that Mathematica orders terms in lexicographic order?
@JakobH I updated the answer.
Feb
1
revised How do I disable that Mathematica orders terms in lexicographic order?
added 878 characters in body
Feb
1
awarded  Enlightened