Community Profile # Gabriele Galli

Last seen: 5 månader ago Active since 2020

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Help with ODE system inside lsqnonlin
Hi All, I am getting the following error when simulating a system of ODE inside lsqnonlin: I have two ICs and it looks to me...

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Question

Parameter estimation in nonlinear state space model using lsqnonlin
Hello All, I have a nonlinear state space model and I would like to perform parameter estimation using the function lsqnonlin. ...

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Question

Permutation matrix P in the qr function
Hello, I understand that using the following sintax [Q,R,P]=qr(A) I obtain the QR decomposition of the matrix A and, P is a p...

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Eigenvalues (eig) and singular values (svd)
Hello, My understaing is that the relationship between eigenvalues () > 0, and singular values () is the following one: Wher...

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How to find the probability (between 0 and 1) of an observation knowing that follow a Normal dist. and knowing its mean and variance?
Hi All, I know the mean and st. dev. of a Normal distribution and I would like to find the probability (between 0 and 1) of an ...

ungefär ett år ago | 1 answer | 0

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Question

Error using odearguments with a symbolic system of differential equations
Hello Everyone, I got the following errors: Error using odearguments (line 113) Inputs must be floats, namely single or doubl...

ungefär ett år ago | 1 answer | 0

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Question

How to speed up the simulation time of a big system of ODEs?
Hi Everyone, I have a big system of equations (378 diff. equations) and I have to simulate it using an ODE solver (I am using ...

ungefär ett år ago | 1 answer | 0

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Question

ODE with input a symbolic matrix
Hello All, I wrote the following function using syms variables and its output (i.e. Sxd) is a system of 12 equations contained ...

mer än ett år ago | 1 answer | 0

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Question

Connecting a Matlab function to Modelica
Hello All, I am trying to connect dynamically a MATLAB function to a Modelica Model. This Matlab function I created is based o...

mer än ett år ago | 1 answer | 0

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Question

Save a toolbox to be directly accessible to Matlab
Hello, I have a toolbox and I want that MATLAB automatically access to it. How can I do? Do I have to save it in a particular ...

nästan 2 år ago | 1 answer | 0

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SUNDIALS installation in MATLAB

nästan 2 år ago | 0

Question

SUNDIALS installation in MATLAB
Hi All, I need to use IDA solver in MATLAB but I am not able to use it. I have downloaded the installation folder which contai...

nästan 2 år ago | 2 answers | 0