Answered
finding turning points of a dataset
Why don't you look for local maxima of curvature? This way you don't have to define any subjective tolerances. You may need to s...

7 years ago | 1

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

7 years ago | 0

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

7 years ago | 0

Answered
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 ...

7 years ago | 0

Solved


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

7 years ago

Answered
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...

7 years ago | 0

Answered
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...

7 years ago | 0

Answered
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...

7 years ago | 0

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Solved


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...

7 years ago

Answered
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...

7 years ago | 0

Solved


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".

7 years ago

Solved


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

7 years ago

Solved


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

7 years ago

Solved


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

7 years ago

Solved


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 ...

7 years ago

Solved


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...

7 years ago

Answered
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 /...

7 years ago | 0

Answered
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: ...

7 years ago | 0

Answered
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 = [...

7 years ago | 0

Answered
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...

7 years ago | 0

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Answered
Minimizing the values in an underdetermined Matrix - minimize with constraints
*edit*: fixed mistake in call to |linprog| To perform L1 minimisation, you'll need access to an LP solver. If you have the op...

7 years ago | 0

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Answered
How to change selected data which would give me the line of best fit (R squared close to 1)?
For the first part x(logical(imag(x))) = nan; For the second, your data points are all over the show. Any two will fit a s...

7 years ago | 0

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Answered
Initializing vs growing a structure
Let's say you wanted to create a 100x1 struct array with a field |A| that you know will store a 3x3 matrix struct('A', repm...

7 years ago | 0

Answered
Minimizing the values in an underdetermined Matrix - minimize with constraints
Assuming you want a minimal Euclidean norm solution, there's no built-in function, but I can offer you a two-line solution: ...

7 years ago | 0

Answered
How to maximize this function: x1^2+x2^2+...+xn^2 ?
I assume you mean minimise rather than maximise, because unless you have |n| independent constraints, your problem is unbounded....

7 years ago | 0

Answered
Can linprog give an integer value of x's?
No there isn't. Integer linear programming is a different beast. Perhaps this one from the file exchange might help: <http://...

7 years ago | 0

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Answered
How to output matlab ode dependent variable at same time step as T and Y?
By far the best way is to compute your dependent variable _afterwards_ with the |y| matrix that was computed by the ODE solver. ...

7 years ago | 1

Answered
In a spmd statement ,How to call a function that contains another spmd statement.
It's because you're calling |spmd| within another |spmd| block (I'm not sure you can do this). Your initial |spmd| call will tak...

7 years ago | 0

Answered
how to construct an affinity matrix?
This might be helpful <http://www.mathworks.com/matlabcentral/fileexchange/26354-spectral-clustering-algorithms>

7 years ago | 0

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Answered
using ode45 with input arrays
OK, I understand what you're asking now First make sure |theta|, |gamma|, and |velocity| are column vectors of the same lengt...

7 years ago | 0

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