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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...
fast 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
fast 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
etwa 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 3 Jahre vor | 4 Antworten | 0
4
AntwortenFrage
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...
mehr als 4 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 4 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
fast 5 Jahre vor | 3 Antworten | 0
3
AntwortenFrage
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...
etwa 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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 ...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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} ...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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 ...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
add blank spaces in cell array
I have the following array ar= 0 1 0 0 0 0 0 0 0 0 0 0...
mehr als 5 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
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...
mehr als 5 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
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...
fast 6 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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....
fast 6 Jahre vor | 2 Antworten | 0