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KostasK


Last seen: 11 días ago Active since 2019

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How to obtain the frequency response of a linear Multi-Degree of Freedom system
Hi all, I have the following Multi-Degree of Freedom (MDOF) system for which I would like to find its frequency response: w...

11 días ago | 0 answers | 0

0

answers

Question


How to create a vector of symbolic variables with specific labeling
I currently have a vector of unevenly spaced increasing values similar to this one: v = [1 2 3 5 7 9 10 12 18 29] What I would...

alrededor de 2 meses ago | 3 answers | 0

3

answers

Question


How to find all possible combinations between the numbers of two vectors where order does matter
I have the following two vectors a = [1 2 3 4] b = [2 4] and I would like to find all possible combination between the number...

alrededor de 2 meses ago | 1 answer | 0

1

answer

Question


How to split a cell array into individual rows
I have a cell array of the following format: C = 2×2 cell array {3×2 double} {3×18 sym} {5×2 double} {5×...

alrededor de 2 meses ago | 1 answer | 0

1

answer

Question


Save checked items from uitree in a cell array
Hi all, I have just started using the uitree for a basic app that I am designing. What I would like to do is save the NodeData...

alrededor de 2 meses ago | 1 answer | 0

1

answer

Question


How to trim a surface intersecting with another
Hi all, I have two surfaces Z1 and Z2 (a surface and an extruded line) that intersect with each other, in point format with two ...

6 meses ago | 1 answer | 0

1

answer

Question


How to vectorise code involving matrix multiplications with vectors
Hi all, I have a large number of matrices and an equally large number of corresponding vectors. For the matrix and vector I ...

7 meses ago | 1 answer | 0

1

answer

Question


How to find the indices within a matrix where its elements are identical along the third dimension
Hi all, I am scratching my head to determine a way where I can find the indices within a multi-dimensional matrix where its el...

9 meses ago | 1 answer | 0

1

answer

Question


Integrate definite integral with system of differential equations
Hi all, I have a fairly complex system of differential equations, and a part of which depends on a criterion that uses defini...

10 meses ago | 1 answer | 0

1

answer

Question


Alternative to blkdiag and mat2cell functions
Hi all, I currently have a code which takes some matrix A and stacks each row of the aforementioned matrix in to a block diago...

11 meses ago | 3 answers | 0

3

answers

Question


Input a repeating jacobian pattern in ode23tb
Hi all, I have been using ode23tb to solve a large system of about 1,312 differential equations where . I do not know the Jaco...

11 meses ago | 0 answers | 0

0

answers

Question


What is the interpolation function used to interpolate the ODE solution using deval?
Hi all, I am currently making a custom ODE solver, and one functionality which I find useful in default ode solvers, and I woul...

11 meses ago | 0 answers | 0

0

answers

Question


Exponential Integrator in MATLAB?
Hi all, I wanted to ask if anyone happens to know of a package/code in MATLAB which solves equations utilising exponential int...

12 meses ago | 1 answer | 0

1

answer

Question


ODE Events Function Using Persistent Variables
Hi all, I am solving an ODE with an events function, which requires that it gets stopped after a certain criterion is reached ...

12 meses ago | 2 answers | 0

2

answers

Question


Calculating the exponential matrix.
Hi all, I have a matrix exponential , where: In specific, is an arbitrary constant, is the identity matrix, and , ...

alrededor de 1 año ago | 0 answers | 0

0

answers

Question


How to share on Matlab Online
Hi all, I have been working with MATLAB on my desktop for some time now. I have recently come accross MATLAB online which se...

alrededor de 1 año ago | 1 answer | 0

1

answer

Question


How to multiply 3D matrices without using for loop
Hi all, I would like to know if there is a way to multiply 3D matrices, preferably without using a for loop. The reason I do no...

alrededor de 1 año ago | 1 answer | 0

1

answer

Question


How to use blkdiag in 3D matrix
Hi all, I would like to know how I can use the blkdiag function for the case of a 3D matrix. In specific, what I mean is the f...

alrededor de 1 año ago | 2 answers | 0

2

answers

Question


Cannot calculate gradient of contour plot
Hi all, I am currently attempting to draw a quiver plot on top of a contour plot, such that I can see the gradient of the cont...

alrededor de 1 año ago | 1 answer | 0

1

answer

Question


Implementing arrayfun for the yline function
Hi there, I have been trying to implement arrayfun for the function yline. In specific I have the following code: figure ...

más de 1 año ago | 1 answer | 0

1

answer

Question


Replace values in each column of a matrix which lie below a threshold
Hi all, Lets say I have the following matrix: a = 0.9952 0.6999 0.2940 0.0034 0.2553 0.5776 0....

más de 1 año ago | 1 answer | 1

1

answer

Question


Perform AND operations with multiple matrices
Hi all, I am performing AND operations with multiple matrices, where I have a cell array M={1x3} containing three matrices of a...

más de 1 año ago | 3 answers | 0

3

answers

Question


Obtain single equation from a system of equations stored as an anonymous function
Hi all, I would like to ask if it is possible to use some sort of notation or other trick, such that I can obtain one of the t...

más de 1 año ago | 1 answer | 0

1

answer

Question


How to reshape an array in a specific manner
Hi all, I was trying to reshape an array in a specific manner, however I couldn't accomplish that. Here is the example: I hav...

más de 1 año ago | 2 answers | 0

2

answers

Question


Access previous iteration in while loop to derive stopping criterion for differential equation correction-prediction method
Hi all, I have been trying to write a prediction-correction method for matrix differential equations, however I have been unsu...

casi 2 años ago | 1 answer | 0

1

answer

Question


ODE45 stop when steady state occurs in a periodic function
Hi all, I have a typical set of equations for a forced spring-mass-damper system, which I have managed to solve successfully. ...

casi 2 años ago | 1 answer | 0

1

answer

Question


Too many input arguments for Max function in 2018b
Hi all, I am using the function 'max' in its newest format for 2018b, as shown here, and I have the following code: A = randi...

casi 2 años ago | 1 answer | 0

1

answer

Question


Find zeros of numeric function
Hi all, I have a numeric function which for the sake of simplicity resembles the following: x = linspace(1:100) ; y = sin(x...

casi 2 años ago | 1 answer | 0

1

answer

Question


ODE45 calculating the total energy in the system and checking the solver
Hi all, I have a simple code written for a 3 degree of freedom damped cart-mass system. My aim is that besides by solving for ...

casi 2 años ago | 1 answer | 0

1

answer

Question


Convergence with fsolve?
Hi all, I was trying to solve a system of equations using fsolve that I havent' been succesfull in doing so. So I have the fol...

alrededor de 2 años ago | 0 answers | 0

0

answers

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