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visits member for 2 years, 8 months
seen 4 hours ago

Code for my breathing avatar here


You may contact me at: BelisariusForSO@gmail.com

But please don't email me with requests about Q&A. Post them in the site instead.

Infix should be used only where it is essential... like in "feliz año nuevo" @rm-rf


4h
comment Is there any way to assign multiple values?
@MichaelE2 In languages that allow "by ref" it's also common to be able to assign pointers. So you may say <memory pointer to var a> == <memory pointer to var b> so effectively making aand b to use the same memory address.
4h
comment What are the advantages and disadvantages of Mathematica compared to Matlab (environmental modelling)?
Sorry, the rules of this site doesn't allow "primarily opinion based" questions. Perhaps someone could recommend you another site to post it. Good luck!
11h
comment Solve equation $cos^2(x)=0$
@RunnyKine Wow! you DID go to class yesterday :D
11h
comment Is there any way to assign multiple values?
@MichaelE2 "by ref" and "by value" are the two main parameter-passing strategies. Some languages implement both. What do you push into the stack when you are going to call a function? the parameter's values or the parameter's memory pointer? If the later, the receiving function code may alter the "variables" on the caller end (AKA side effects)
15h
comment finding eigenvectors of a n*n symbolic matrix
@DavidCarraher Which commands? AFAIK there is no "direct" command to solve these kind of problems (get closed formulas for matrix properties as a function of its dimensions)
22h
comment Limited Opacity Levels in Image3D?
Have you tried other predefined color functions?
22h
comment Finding the maximum of a expression constrained by a relation between the variables
Above a comment on you now deleted question
22h
comment Finding the maximum of a expression constrained by a relation between the variables
$\text{NIntegrate}[b \text{ constant},\{b,\text{x1},\text{x2}\}]=\text{constant} \left(\frac{\text{x2}^2}{2}-\frac{\text{x1}^2}{2}\right)$
23h
comment Limited Opacity Levels in Image3D?
There is a question somewhere about Opacity having a sharp cutoff (ie not being able to represent low gray values). Probably a hint that it's working with discrete values.
1d
comment Limited Opacity Levels in Image3D?
This is what I get
1d
comment Limited Opacity Levels in Image3D?
In V9 I don't see the "alternating" effect
1d
comment How to regress negative log?
But then I don't understand how your problem with NonLinearModelFit[] is related to a certain (negative Log or whatever) function.
1d
comment How to regress negative log?
Probably a dumb question, but what is a " negative log estimate"?
1d
comment Find maxima and minima of data like {time,value}
Aren't they showing basically an exponential behavior? Or are they NKCs (New Kind of Capacitors? :D )
1d
comment ReplaceRepeated vs DownValues speed
Can't you reduce your code to its essential features while keeping the behavior?
1d
comment Fitting a plane from a set of (x,y,z) values with uncertainties on 3 variables
Please post at least your model
1d
comment ComplexExpand does not treat everything as real number
@Nasser A New Kind of Variables :)
1d
comment ComplexExpand does not treat everything as real number
@Nasser I upvoted your comment and then thought about where the Mma docs define what is a variable. Damn,
1d
comment My Baum-Welch algorithm is very slow. Is it due to Mathematica?
@IgorRivin Thanks a lot :)
1d
comment How to deal with recursion formula in Mathematica?
Thanks a lot ,+2 :D