# Mitsu

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**Content Feed**

Matlab and SPICE toolkit and parfor

When using SPICE libraries, I run the cspice_furnsh function for each parallel thread before the parfor loop where they will be ...

1 month ago | 0

Question

Count instances of subarray inside array

For an array A = [2,2,2,2]; I would like to count how many times [2,2] appears in A, using each value only in one possible pa...

3 months ago | 1 answer | 0

### 1

answerQuestion

How to store 2D arrays in a for loop inside a parfor loop?

I compute e.g. a 3x1 array inside the inner for-loop. In each iteration of this loop, the 3x1 array is saved in a matrix. At th...

3 months ago | 1 answer | 0

### 1

answerQuestion

Is this combination of parfor and global variables prone to errors?

In the main script mainScript.m, a parfor loop goes through N cases. In each case of the parfor loop, the function principalFu...

3 months ago | 1 answer | 0

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answerwhy are my graphs not publishing?

Firstly, For problem 3 and problem 4, you can solve your issue by adding hold on after you define the figure. So instead of f...

3 months ago | 0

Question

Is there a way to overlap two markers on the same legend label?

In the plot, I resort to plot(x, y, 'bx' , 'DisplayName', 'Data label'); plot(x, y, 'bo' , 'HandleVisiblity'); In the legend,...

4 months ago | 0 answers | 0

### 0

answersQuestion

Open .m files in current MATLAB instance from Windows Powershell

I am trying to open matlab files via matlab file.m from Windows PowerShell, so that I can proceed to edit them in MATLAB. Howeve...

4 months ago | 1 answer | 0

### 1

answerQuestion

How to deal with two ode events triggered together?

I run an ode() with an event function that contains multiple conditions. Sometimes, event 1 is triggered alone, sometimes event...

5 months ago | 0 answers | 0

### 0

answersQuestion

How to prevent plotted contents to spill outside of the axes lines

Using set(gca, 'Layer', 'top') I end up with this: Is there a way to completely hide plotted contents that appear beyond t...

6 months ago | 1 answer | 0

### 1

answerQuestion

Is there a one-line code for this?

% I would like to go from A = [1 1;2 2;3 3;4 4;5 5] % to A = [1 1;2 2;3 3;4 4;5 5;1 2;2 3;3 4;4 5;5 6]; ...

7 months ago | 1 answer | 0

### 1

answerQuestion

Why does the Simulink point-mass high-precission orbit propagator increase semi-major axis over time?

I am using the "Orbit Propagator High precision" built-in Simulink block. I have set the gravity model to point-mass, and the i...

7 months ago | 0 answers | 0

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answersQuestion

Simulink: Is there a difference between Keplerian propagator and point-mass high precision propagator?

In order to see the difference between the fast yet simple propagator and the high-precision propagator of Simulink, I created a...

7 months ago | 0 answers | 0

### 0

answersSolved

Is my wife right? Now with even more wrong husband

Again, as in "Is my wife right?" ( <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right> ), answer 'yes' r...

12 months ago

Solved

Back to basics 9 - Indexed References

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix and row and column, output the index of th...

12 months ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

12 months ago

Question

Record best solution in each GA generation running with UseParallel=true

Hello, Is there a way to record the best solution at each generation running with parallelization? (that is, with UseParallel=1...

1 year ago | 1 answer | 1

### 1

answerQuestion

How can one pass arguments to a custom CrossoverFunction in ga?

Hello, I am implementing a custom crossover function following the documentation. I need to pass 2 additional variables along ...

1 year ago | 1 answer | 0

### 1

answerQuestion

Is it bad practice to have nonlinear constraints array change size depending on the input solution in a genetic algorithm?

In a nonlinear ga, the nonlin constraint function is evaluated with each solution, and the output is [c,ceq]. These arrays conta...

1 year ago | 1 answer | 0

### 1

answerQuestion

Is slicing one big matrix more efficient than storing smaller matrices in a struct?

An example of the former would be: % allcases = % % +---------+------------+------------+------------+-----+-------------+ ...

1 year ago | 1 answer | 0

### 1

answerQuestion

Efficient way/best practice to slice array under a logical condition as well as other conditions

I did not know how to properly title this question, so please bear with me. Simply put, with the following two arrays: A = [0 ...

1 year ago | 1 answer | 0

### 1

answerQuestion

How do MATLAB workers/PC cores divide the work in a parallelized optimization inside a parfor loop?

For example: parfor i = 1:20 options = optimoptions('ga','UseParallel',true,'UseVectorized',false); x = gamultiobj(Ob...

1 year ago | 1 answer | 0

### 1

answerQuestion

Polar plot points appear on wrong position

Hello, I am plotting values in an array of three parameters (angle, radius, and third parameter which is colored) points with a...

1 year ago | 1 answer | 1

### 1

answerQuestion

How can I show radial ticks and axis on top of a polar plot?

Although not a MWE, this is what the code looks like: figure; polaraxes; hold on; polarscatter(vara,varb,[],varc,'.'); c =...

1 year ago | 1 answer | 0

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answerHow to put a title on a colorbar?

Alternatively, hcb=colorbar; hcb.Title.String = "A Title"; Among the properties of "hcb" there is "Title", which is a Text da...

1 year ago | 0

Question

Understanding why GA's penalty profile is so similar for any run

I am running a genetic algorithm with only nonlinear inequality constraints. The solutions is an array of "nvars" integers that ...

1 year ago | 1 answer | 0

### 1

answerQuestion

"Failure in initial user-supplied nonlinear constraint function evaluation" in a ga() with integer variables and non-linear inequality constraints

(Edit: Please read answers/comments before pointing out code mistakes.) I am trying to run a GA where the solutions are an arra...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to show a seconds plot axis ticks as hh:mm

[Edited to clarify that X is a 2x2, part of a meshgrid.] Assume the data for the x-axis is duration in seconds, in both directi...

1 year ago | 1 answer | 0

### 1

answerQuestion

Extra independent component in ode integration affects other components

I am trying to understand how the ode functions in MATLAB work. In this case, I am running an ode45 or ode113 with a state that...

2 years ago | 1 answer | 0

### 1

answerQuestion

Order of elements inside sqrt/exponentiation changes ode output

I am running a code that runs an ode in which the equations of motion are exactly the same for both cases (except the line where...

2 years ago | 1 answer | 0