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Last seen: 28 dagen ago |  Active since 2018

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Scaling variables for integration with ode15s
Hello, I am integrating a set of differential equations with ode15s and some of my variables have very different orders of magn...

meer dan een jaar ago | 1 answer | 0

1

answer

Question


Constrained dynamic optimization with fmincon
Hello, I am trying to use fmincon to solve a dynamic optimization problem: where u are my control variables, x are my state...

meer dan een jaar ago | 1 answer | 0

1

answer

Question


Unable to meet integration tolerances without reducing the step size below the smallest value allowed
Hello, I am integrating a series of ODEs and I run into the following warning that stops the integration: Warning: Failure a...

bijna 3 jaar ago | 1 answer | 0

1

answer

Question


Readability of matlab code
Hi, I am coding using matlab and have many functions, some of which have more than a dozen input arguments. The majority of th...

ongeveer 3 jaar ago | 4 answers | 0

4

answers

Question


Vectorize the loops within the function
Hi, I am trying to create a function for Lagrange's interpolation and I wanted to know if there is a way to vectorize it that ma...

ongeveer 4 jaar ago | 1 answer | 0

1

answer

Question


ode15s unable to meet integration
Hello, I am modeling a continously stirred reactor and some chemical reactions and trying to do a cyclic process, i.e. feed the...

ongeveer 4 jaar ago | 0 answers | 0

0

answers

Question


question about vectorization using indexes
Hello, I am trying to do the following operations in matlab but I have a problem with how to properly write my code using vector...

meer dan 4 jaar ago | 3 answers | 0

3

answers

Question


sparse matrix operations to gain efficiency
[EDITED] Hello, I've never really used sparse matrices before but I was wondering if it would be useful in my case to imporve...

bijna 5 jaar ago | 1 answer | 0

1

answer

Question


Concatenate cells containing strings
Hello, I need to concatenate cells to obtain new strings within a new cell array. For example I have cells A and B A={'hel...

ongeveer 5 jaar ago | 1 answer | 0

1

answer

Question


Split character arrays at given column
Hello I have the following character array, val = 3×79 char array ' 0.24971474E+01 0.17808300E-02-0.78001300E-06 ...

ongeveer 5 jaar ago | 1 answer | 0

1

answer

Question


match values of cells to numbers
Hello, I have the following cell cell = 6×6 cell array {' A'} {'B' } {0×0 double} {0×0 double} ...

ongeveer 5 jaar ago | 1 answer | 0

1

answer

Question


minimization fmincon with ode
Hello, I am using fmincon to fit my model to data. I have a set of differential equations that give me the model results: dy...

meer dan 5 jaar ago | 1 answer | 0

1

answer

Question


set fmincon function tolerance
Hello, I am using fmincon and I want to set the function tolerance and I thought that it meant that if |f(xi) – f(xi+1)| < Tol...

meer dan 5 jaar ago | 1 answer | 0

1

answer

Question


Optmization with fmincon using an external software
Hello, I have a problem and I do not know how to solve it. I’ll try my best in explaining. I am optimizing an objective func...

meer dan 5 jaar ago | 0 answers | 0

0

answers

Question


fprintf break line different arrays
[Edited] I use 2 arrays here as examples but I actually have several I have the following arrays: a=[1 2 3 4 5 6 7 8 ...

meer dan 5 jaar ago | 1 answer | 0

1

answer

Question


add blank spaces in cell array
I have the following array ar= 0 1 0 0 0 0 0 0 0 0 0 0...

meer dan 5 jaar ago | 2 answers | 0

2

answers

Question


Concatenate rows of cell into one column
Hello, I have one cell A of size nxm and I would like to convert it into a cell of size nx1. For example if A= { [1] [2...

meer dan 5 jaar ago | 2 answers | 0

2

answers

Question


Vectorization of a nestled loop
I am trying to improve the overall performance of my code and I am learning about vectorization. I've read the documentation...

meer dan 5 jaar ago | 1 answer | 0

1

answer

Question


Add values to vector
I have the following vectors A and B A= [20 80 -1 0.1 0.05 0.25 0.13 0.12 0.35 21 70 -1 0.1 0.2 0....

meer dan 5 jaar ago | 2 answers | 0

2

answers