Daniel

Last seen: 3 dagen ago | Active since 2023

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I am having a problem implementing ode45 in a appdesigner code as well as using the uigetfile and readtable functions to read data from a file into appdesigner.
When i run the appdesigener app, the integartion gives a warning from the 82nd integartion to the last integration. Moreover i a...

3 maanden ago | 0 answers | 0

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Question

I am having trouble reading textfile data into my app using uigetfile and readtable functions in appdesigner. Kindly assist
I am using a pushbutton.userdata option to read the textfiles and i am not sure if thats the right way to do it. Once the data i...

3 maanden ago | 1 answer | 0

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when using ode45 with the for loop, should I put the initial conditions inside or outside the for loop?
Where should I placde the initial conditions for the ODE when using ode45 and the for loop to solve my system of ODEs? I have no...

4 maanden ago | 1 answer | 0

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Why does my ode45 return a solution with the first values as zero despite I supplying non-zero initial conditions?
In the following code to simulate Pond volume and water temperature changes the code returns the solution (Y) with the first val...

4 maanden ago | 3 answers | 0

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I want to know if my code is well written based on a set of criteria.
To estimate DIP_s, it is necessary to approximate the expected DIP concentration within the current time step used in the integr...

4 maanden ago | 0 answers | 0

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one of the terms "Rho_net" on the RHS of an set is varying with time over the tspan. How do I implement the set of the ODEs such that the term updates at every time step?
I have been trying the code as below but it returns the error "dYdt = @(t, Y) [ode1(t, Y); ode2(t, Y)] must return a column vect...

5 maanden ago | 2 answers | 0

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Question

Please help to solve the error in evaluating a system of odes using ode45
The following code keeps on returning the following error. Error using odearguments @(T,Y)[ODE1(T,Y);ODE2(T,Y)] returns a vec...

5 maanden ago | 1 answer | 0

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