Question

Finding non-constant species in Simbiology Object

I'm reading an sbml file to create a Simbiology object modelObj = sbmlimport('File.xml'); I'd like to see the species that a...

25 days ago | 1 answer | 0

Question

Question on using cvode solver

Hi All, I have an sbml model. I get different results while simulating the model with ode15s in Simbiology and cvode in COPASI....

25 days ago | 0 answers | 0

Question

Question on specifying input to sbiosimulate

I'm using sbiosimulate to solver the model loaded from an xml file [t, x, names] = sbiosimulate(modelObj); modelObj has the ...

26 days ago | 2 answers | 0

Question

Accessing a variant object

I have a variant object of the following form ContentIndex: Type: Name: Property: Value: ...

26 days ago | 1 answer | 0

Question

Output of sbiosteadystate task

I'm using [success, variant_out] = sbiosteadystate(modelObj) to find the steady states of the non-constant species in my mode...

27 days ago | 1 answer | 0

Question

How to set up estimation method in sbiofit

Hi All, I'm trying to estimate parametrs in my model using parameter estimation task in SimBiology toolbox.In the documentation...

28 days ago | 1 answer | 0

Question

Setting variables to constants in MATLAB

I have a set of differential equations and I want to set some of the variables to be constant. For instance, dy1dt = f(..) ...

29 days ago | 0 answers | 0

Question

How to run the model in SBML file?

Hi All, I have a differential equation model(kinetic model) in sbml file. I want to run this model using ode15s solver. How ...

29 days ago | 1 answer | 0

Question

Question regarding passing input arguments in fmincon

Hi All, I am solving an optimization problem.There are no equality constraints in my model. I want to pass ODEs as constraint ...

1 month ago | 1 answer | 0

Question

Parameter estimation using shooting method

Hi All, I want to do the following, I have a set of 20 first order differential equations and I want to estimate some of the...

1 month ago | 0 answers | 0

Question

Parameter estimation - How to input experiment data?

Hi All, I want to perform parameter estimation of the following ode model. 5 parameters have to be estimated after perfo...

2 months ago | 0 answers | 0

Question

Fix the maximum number of iterations while using ode solvers

Could someone let me know to fix the maximum number of ierations while solving a set of differential equation using ode15s? I...

3 months ago | 1 answer | 0

Question

Solving system of equations with constraints

I am solving a system of linear equations with constraints using linprog. Aeq = [-1 0 1 0 0 0 0;1 -1 0 -1 0 0 0;0 1 0 0 1 0 0;...

4 months ago | 2 answers | 0

Question

Stiff differential equation solvers

I'm trying to understand how the stiff differential equations are solved in ode5s and ode15i. If my understanding is right, sti...

4 months ago | 1 answer | 0

Question

Access to a reference

I'm looking for the refernce provided in the end of this page, https://in.mathworks.com/help/matlab/ref/ode15i.html I don't ...

4 months ago | 1 answer | 0

Question

Defining mass matrix for solving transport equation

I want to solve the following 1-D pde which is discretized in spacial direction to solve using ode15s. Dc/Dt = D*D^c/Dx^2 - v*...

5 months ago | 0 answers | 0

Question

Factorizing a matrix with 1's along diagonal

I want to factorize the follwoing matrix, A= 2 -1 0 0 -1 2 -1 0 0 -1 2 -1 ...

5 months ago | 1 answer | 0

Question

Question regarding xmesh option in pdepe solver

The command xmesh is given as an input to the pdepe solver. For example xmesh = 1:1:10 Does this mean the solver internally...

5 months ago | 0 answers | 0

Question

Solving advection diffusion pde

I want to solve the above pde with the given boundary and initial conditions. I came across the pdepe function in MATLAB. I...

5 months ago | 1 answer | 0

Question

Implementing boundary condition in pdepe

From the general expression of a pde given here Could someone check if the following implementation of the boundary cond...

5 months ago | 1 answer | 0

Question

coloring node and edge of a graph

I have a graph with values assigned to nodes and edges, t = 1:4; h = 2:5; g = graph(t,h); plot(g) g.Edges.value = [10; 20...

5 months ago | 2 answers | 0

Question

Obtaining laplacian of a graph

The Neumann Laplacian of a simple graph(G) can be formed from the commands degree(G) and adjacency(G), L= D- A . Could someone...

5 months ago | 0 answers | 0

Question

Question on using addedge()

How do we use addedge to assign weights to a graph containing edges with multiple edge weigths(Value1 and Value2, in my example)...

5 months ago | 1 answer | 0

Question

Modify the weight of few edges in Graph

I have the following graph with 4 edges. tail = [1 2 3 4]; head = [2 3 4 5]; G = graph(tail,head) G.Edges.Value = zeros(4...

5 months ago | 1 answer | 0

Question

Drawing a directed graph

I have the following graph, function Digraph() Edges = [1 2;2 3;3 4; 3 5;4 5;4 6;5 6;6 7] t= Edges(:,1) h = Edges(:,2) G =...

5 months ago | 1 answer | 0

Question

Solving a system of linear equations with a few known variables

I'm solving the following system of linear equations, Ax = b, some of the x's are knowns. For example, A= -12 12 ...

5 months ago | 2 answers | 0

Question

Finding the pseudo inverse of a matrix

I'm trying to find the inverse of the following matrix A = -185.0685 185.0685 0 185.0685 -274.3238 89.2553 ...

6 months ago | 3 answers | 0

Question

Alternatives for concise representation of conditional statements

I have the following code with multiple conditional statements . Could someone suggest if there is a consice way of writing the ...

6 months ago | 1 answer | 0

Question

How to find the Laplacian of a Graph with multiple edges

I'm using MATLAB online version 2018b. I'd like to ask for help in using the laplacian function in graph. The adjacency(A) a...

6 months ago | 1 answer | 0

Question

Importing a list of tuples genrated in python to MATLAB

I have a list of tuples generated in python. The list is save in a text file and loaded in MATLAB. [(2, 4), (2, 12), (2, 8)] ...

6 months ago | 1 answer | 0