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End of function slow - Matlab Profiler
Pretty sure you'll find it's the overhead for the function call

oltre 12 anni fa | 0

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Fit and Plot Gaussian Function
Sure, rather than trying to fit a distribution (which is not what you want), just fit the Gaussian itself. Generate some nois...

oltre 12 anni fa | 0

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Surface area from a z-matrix
OK, well how about splitting each quadrilateral into two triangles, and just summing up the areas? I'm sorry there's no way I ca...

oltre 12 anni fa | 0

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Argmin with several minimums
It doesn't feel very satisfactory, but this will do the trick I = find(A == min(A))

oltre 12 anni fa | 0

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Projecting Points to a new Basis
I'm not sure what your question is asking because you're missing a symbol off your question. But I think you mean if n is not eq...

oltre 12 anni fa | 0

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How can I use "symbfact" to speed up several consecutive Cholesky factorizations?
You can't (unless something has changed recently). When I had to do this, I ended up working with the C code in CSparse directly...

oltre 12 anni fa | 0

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Simple solution to a simple problem
Try 1./(1 + 9*x.^2) i.e. a '.' before the division

oltre 12 anni fa | 0

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Piecewise Cubic Hermite Interpolating Polynomial (PCHIP)
It works perfectly x = [5.8808 6.5137 7.1828 7.8953]; y = [31.2472 33.9977 36.7661 39.3567]; pp = pchip(x...

oltre 12 anni fa | 0

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Sparse and nonspare QR
Sorry to take a while, busy week. Neither are wrong. You'll notice that the only difference in the outputs is that the sparse ve...

oltre 12 anni fa | 0

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Risposto
Sparse and nonspare QR
On my system they match (up to the signs of the rows, as you'd expect). m = 20; n = 10; X = sprand(m,n,0.3); Rs...

oltre 12 anni fa | 0

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How to calculate expm of a badly scaled matrix?
You might this Cleve's corner instructive <http://blogs.mathworks.com/cleve/2012/07/23/a-balancing-act-for-the-matrix-exponenti...

oltre 12 anni fa | 0

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MATLAB Project for Chemistry
How about simulating the Belousov-Zhabotinsky reaction in 2 dimensions? Start by watching some YouTube videos and work from ther...

circa 13 anni fa | 0

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How to run multiple different scripts in parallel ?
One way to do it matlabpool open local 4 spmd switch labindex case 1 script1 ...

circa 13 anni fa | 0

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Row by column multiplication
There is a built in way to do it quickly if you use sparse multiplication. Essentially, you construct the block diagonal matrix ...

circa 13 anni fa | 0

Risolto

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

circa 13 anni fa

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How to calculate eigen values and eigen vectors of a square matrix without using eig() function?
_"Please tell me algoritm for this."_ * Power Method * Inverse/Shifted Inverse Power Method * QR Algorithm * Jacobi Algori...

circa 13 anni fa | 0

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Proper implementation and use of fmincon
I presume [1 2 3 4] and [6 7 8] are sets of possible values for x1 and x2. If your problem is only small, then you can use brute...

oltre 13 anni fa | 0

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Find Joint Angle for Animation
You are taking the dot products of the wrong vectors! You need to take the vectors emanating from M2. The following should do th...

oltre 13 anni fa | 0

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Tic Tac Toe FTW
Given a tic tac toe board: * 1 represents X * 0 represents empty. * -1 represents O It is X's move. If there is an imme...

oltre 13 anni fa

Risposto
Performing Gauss Elimination with MatLab
The function you want is LU [L, U] = lu(K); The upper triangular matrix resulting from Gaussian elimination with partial...

oltre 13 anni fa | 2

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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

oltre 13 anni fa

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

oltre 13 anni fa

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

oltre 13 anni fa

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

oltre 13 anni fa

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

oltre 13 anni fa

Risolto

Eliminate unnecessary polygon vertices
Suppose you have an n-point polygon represented as an n-by-2 matrix of polygon vertices, P. Assume that the polygon is closed; t...

oltre 13 anni fa

Risposto
Attempted to access Pe(7); index must be a positive integer or logical.
Your problem is that |q| and hence |m| are floating point numbers, not integers. in this case the problem is that m = 0.6 /...

oltre 13 anni fa | 0

Risposto
Solving an implicit function, fsolve vs. fzero
How about doing a fixed number of Newton steps for each problem? (not necessarily doing a convergence check) For example: ...

oltre 13 anni fa | 0

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How do I find common volume of spheres?
Here's how I'd do it (if I was in a hurry). First pretend all the spheres are cubes, and find their intersection. inx = [...

oltre 13 anni fa | 0

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Problem using 'deal' for objective and gradient in comb. with 'DerivativeCheck'
An internal routine (in this case |finDiffEvalAndChkErr|) is calling your routine with only one output. For a regular function t...

oltre 13 anni fa | 0

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