woodchips

New York, NY

Age: 57

In no special order, bridge, woodworking/woodturning, applied mathematics and numerical analysis and mathematical modeling.

1d
comment smoothing 2D plot in MATLAB
Note that this does NOT do smoothing, as you asked.
1d
comment smoothing 2D plot in MATLAB
Yes. This is one good option. One can also simply do a gaussian blur, using conv to do the work.
1d
comment How to open a Matlab function
This must have been asked many times before. Surely a duplicate.
1d
comment equation of motion in MatLab
As you state it, YOU have to solve it. Your homework is for YOU to do. It improves YOUR understanding. If you get someone else to do it for you, then YOU learn nothing.
2d
comment Debugging theISSUE with 24 symmetric operators. in MATLAB
Test it pout with a SMALL data set, only a few points, where you know the correct answers. Use the debugger, checking each line for correctness. You should never just throw a huge set at unverified code, and then wonder what is wrong. That would be just as difficult as throwing uncommented code at us, and hoping we can debug it for you.
May
18
comment How to create two or more matrices from a single one under certain conditions?
Creating MULTIPLE named matrices is generally a bad thing to do, unless you will be happy with a cell array of matrices, which I would strongly suggest.
May
18
comment How to create two or more matrices from a single one under certain conditions?
In your example, you did not actually build TWO distinct matrices. Is your goal to build a single matrix of the form you show?
May
16
comment Simple Matlab GPU
Why would you NOT compare this to a simple use of bsxfun, rather than using loops as the base case?
May
16
comment Finding a value of a variant in a permutation equation
No, it is not a problem to compute gamma. There are implementations to be found in almost any language you will work in. Move out of the past.
May
16
revised Finding a value of a variant in a permutation equation
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May
16
revised Finding a value of a variant in a permutation equation
added 919 characters in body
May
16
revised Finding a value of a variant in a permutation equation
added 919 characters in body
May
16
comment Finding a value of a variant in a permutation equation
No, the standard solution is NOT to use Stirling's approximation. The standard solution, had you suggested it, would be to use the identity relating gamma(n+1) to n!, which I pointed out in my own answer. But it seems silly to use an approximation that will not be accurate for some values of n, especially when a non-approximation is available. As far as Wolfram solving it, one would presume it MIGHT have used that same identity.
May
16
answered Finding a value of a variant in a permutation equation
May
16
comment Finding a value of a variant in a permutation equation
-1, since Newton-Raphson does not apply to factorials, which are only defined on the integers.
May
15
answered data fitting in specific equation - matlab
May
13
comment Regarding using while loop in Matlab
+1 Good analysis. Note that the two vectorized methods are both quite fast, and comparable. One should typically choose one of two such methods without bothering to compare the time so carefully. Its simply not worth programmer time to do so, unless the code timing is critical.
May
12
comment Function deceleration in matlab
If you are not sure, then TRY IT OUT! This is the best way to learn. Play with MATLAB.
May
12
comment Navigation Through Set of Matrices
Sorry, but this is YOUR program to write. Your question still suggests that you are asking someone else to write it for you.
May
8
answered MATLAB; Lagrange Polynomial, an Interesting Error
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