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Lenilein


Last seen: 2 years ago |  Active since 2019

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Question


Create all combinations of a vector
Hello, I need your help to write down the different possible combinations of a vector x used as input for my model. Basically ...

4 years ago | 1 answer | 0

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answer

Question


Extracting elements from a matrix
Hello, I have a column matrix A with 50 elements and a small column matrix B with 5 elements. I would like to determine the val...

4 years ago | 1 answer | 0

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answer

Question


Number of variables vary in function definition
Hello, I tried looking at following problem under all angles but couldn't find a solution: I have a matrix A with n number of r...

4 years ago | 1 answer | 0

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answer

Question


Obtain 2nd and 3rd best solution of an optimization problem with Genetic Algorithm
Good Morning, I am using genetic algorithm to solve a MINLP problem and it works fine so far since I get the minimum value for ...

4 years ago | 0 answers | 0

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Answered
Condition on optimization variable
After the little research I was able to figure out the solution: I can define a new Matrix B=abs(A-1) which I then integrate as...

4 years ago | 0

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Question


Condition on optimization variable
Dear Community, I am trying to solve an optimization problem (below) with the optimization variable x which elements can be eit...

4 years ago | 1 answer | 0

1

answer

Question


Mysterious "Operands to the || and && operators must be convertible to logical scalar values." error
Hello dear community, I'm getting following error quite unexpectedly (since I don't have any && or || in my code) while trying ...

4 years ago | 3 answers | 1

3

answers

Question


Expressing non-linear conditions in an NLP optimization problem
Dear Community, I would like to solve following NLP optimization problem (for example with the fmincon function): My objective...

4 years ago | 1 answer | 0

1

answer

Question


linear ODE as a constraint within an milp problem
Good Morning, I have a syntax question regarding a milp problem that I would like to solve with intlinprog function: My object...

4 years ago | 1 answer | 0

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answer

Question


Conversion to logical from optim.problemdef.OptimizationConstraint is not possible. Expressing a condition for a parameter.
Hello, I am trying to formulate an mixed integer optimization problem and one of my parameters (say A) depends on my optimizati...

4 years ago | 1 answer | 0

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Question


Maths / ODE / Why do I get complex results?
Hello dear Matlab Community, I have a question that is a more a mathematics- than a MATLAB question but since I spent whole day...

4 years ago | 1 answer | 0

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answer

Question


Syntax Question struct array - Unexpected MATLAB operator.
Hello, I have been trying to reorganize my variables & parameters into struct arrays in order to group all corresponding to a s...

5 years ago | 1 answer | 0

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Question


Choice of Database for smooth data import into Matlab
Good Afternoon, I would like to store my input data in a Database external to matlab. Any recommendation regarding the type of ...

5 years ago | 1 answer | 0

1

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Question


Optimization&ODE problem // Symptom: Index exceeds matrix dimensions (here we go again!)
Dear Community, Since your help brought me so much forward, I have become more and more ambitious! Right now I am trying my han...

5 years ago | 1 answer | 0

1

answer

Question


Syntax question - renaming a variable
Dear Community, I have a very basic syntax question: I defined up=y(1) because I wish that matlab evaluates the diff(up) for e...

5 years ago | 1 answer | 0

1

answer

Question


Index exceeds matrix dimensions.
Hello dear Matlab Community, I would like to request your help again (it's really difficult to resist, seeing how helpful you w...

5 years ago | 1 answer | 0

1

answer

Question


Index exceeds matrix dimensions.
Dear All, Can someone enlighten me by explaining why I'm getting following error message in code below? Index exceeds matrix d...

5 years ago | 1 answer | 0

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answer

Question


Solving a system of ODE over different intervals (with different conditions on parameters)
Good Evening dear Matlab Community, Now that my first part of code works, I have the ambition to make it a little complicated b...

5 years ago | 1 answer | 0

1

answer

Answered
How to solve a system of two paired differential equations
Good Morning, Thanks for giving an answer to my questions and pointing out ODE EventLocation, I think that is what I was lookin...

5 years ago | 0

Question


How to solve a system of two paired differential equations
Good Evening, After several hours of unsuccessful wandering through the jungle of matlab posts, I decided to call for help re...

5 years ago | 3 answers | 0

3

answers