Question

Extracting a principal axis that belong to maximum eigen value from the 3-D matrix.

I have a 3 x 6 x1000 matrix and got the eigenvalues to know where the maximum condition number occurs. However, I also would lik...

4 jours ago | 0 answers | 0

Question

How to speed up iterating a large data in a nested loop ?

%example a=1x1000; b=1x1000; for i=1:length(a) for j 1:length(b) x(i,j)=cos(a(i)); y(i,j)=sin(b(j...

environ un mois ago | 1 answer | 0

Question

fmincon and fmiunc gives different result for the same problem

Can anyone help how to setup the result from fmincon and fminunc to give the same result for same problem ? Thanks

environ 2 mois ago | 1 answer | 0

Question

global convergence of quasi-newton

Is there any way to pick a global optimum point in the quasi-newton algorithm of matlab? Thanks

environ 2 mois ago | 0 answers | 0

Question

Function for linearization of nonlinear system of equations

V =F(rp,x1,x2,theta(t), psi(t), phi(t),wx(t),wy(t) ) is a non linear equation and the objective is to minimize output vector V f...

2 mois ago | 0 answers | 0

Answered

Why option for fmincon is not working ?

I got it why. The nonlcon argument has been skipped. [V,fval,exitflag,output,lambda,grad,hessian] = fmincon(fun,x,[],[],[],[],L...

Why option for fmincon is not working ?

I got it why. The nonlcon argument has been skipped. [V,fval,exitflag,output,lambda,grad,hessian] = fmincon(fun,x,[],[],[],[],L...

2 mois ago | 0

| accepted

Question

Why option for fmincon is not working ?

I defined the option as follows and it is not working. I tried many other options as well. Could anyone gives some idea ? Thank...

2 mois ago | 2 answers | 0

Question

fminunc for upper and lower bound variable definition ?

Isn't it possible to give upper and lower bound for the variables in the objective function while using fminunc ? Thank you.

2 mois ago | 2 answers | 0

Question

Visualize (plot) 3D array data

Surf and mesh functions are not handling the following data. Is it me or other methods should be used ? Thanks ts=5; t=0:1/...

2 mois ago | 0 answers | 0

Question

Can any one check why quasi-newton is not working for my function ?

function V = PRSopt_QN(radius,alpha,beta) %% Calling the function fun = @(x)PRSopt_QN(x(1),x(2),x(3)); x0 = [0.25, ...

2 mois ago | 0 answers | 0

Question

Quasi newton method for NLP code problem

Hello, Can some one tell whats wrong with the following program ? I tried to change x and evaluate V but I got some difficulti...

2 mois ago | 1 answer | 0

Question

Appropriate nonlinear optimization tool in matlab

I have objective funciton subjected to . The optimization design variables are and . I cannot linearize the function to use L...

2 mois ago | 0 answers | 0

Question

How to work with a matrix close to singular in MATLAB ?

I've ill-conditioned matrix which shows its inverse close to singular. So, the minimization solution is unstable. The psedoinve...

3 mois ago | 1 answer | 0

Question

Why Matlab tells the following A*A^T matrix is not a positive Semi-definite Matrix ?

M = [ 1.0000 0 0 0 0 0;... 0 0.9803 -0.0000 -0.0000 -0.0984 0.0984;...

3 mois ago | 1 answer | 0

Question

Why matlab live editor and matlab script gives different rank calculation result for the same matrix ?

I suddenly found matlab is misundesrstanding this matrix and checked it with matlab live editor. Then, matlab live gives the...

3 mois ago | 2 answers | 0

Solved

matrix zigzag

Unfold a 2-D matrix to a 1-D array in zig-zag order, e.g., for matrix [ 1 2 3 ; 4 5 6 ; 7 8 9 ] the resulting 1-...

4 mois ago

Solved

Simple equation: Annual salary

Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

4 mois ago

Question

Why is it so hard for MATLAB to solve the following symbolic equation

syms rp alpha beta theta psi z A=cos(alpha)-cos(beta); B=sin(alpha)-sin(beta); C=(cos(beta)-1)/tan(beta)-(cos(alpha)-1)/tan(a...

5 mois ago | 1 answer | 0

Question

Solving trigonometric equation (decoupling)

I wanted to solve as a function of other variables Is is possible to decouple this equation ? Even matlab symbolic gave m...

5 mois ago | 2 answers | 0

Question

Numerical integration RK4 for the given data

I have the angular veocity data shown below and wanted to apply , where. w Columns 1 through 9 5.0468 0.1049 -0....

5 mois ago | 1 answer | 0

Question

Symbolic Derivative in matlab

Can matlab diffrentiate F with respect to , and only ?. Any help is apperciated

5 mois ago | 1 answer | 0

Question

Output argument "St" (and maybe others) not assigned during call to "function ".

I got an error Output argument "St" (and maybe others) not assigned during call to "get_StCarretero". Error in InverseVeloc...

5 mois ago | 0 answers | 0

Question

Evaluate gradient function in the for loop.

is a function dependent on time. It is n the function and need to be differentiated to get and the differentiation should pa...

5 mois ago | 1 answer | 0

Question

Interpolating angle between -0.2 to 0.2 rad

Can anyone help for a valid interpolation of an angle from -0.2 to 0.2 to give 1001 points in between? SLERP is not doing this ...

5 mois ago | 1 answer | 0

Question

Algorithm to extract linearly dependent columns in a matrix

Is there any general or standard approach to extract columns that are linearly dependent from the given matrix ? Thanks and an...

6 mois ago | 3 answers | 0

Question

Interpolating the data given between -pi and pi

I have the following program and wanted to get the value between - and . But the program I made below only gives . Any help is ...

6 mois ago | 1 answer | 0

Answered

xlswrite multidimensional array in one sheet.

This works, in any case if someone need it T=matrix ; for j=1:length(matrix) T(8*(j-1)+[1,dim(matrix)],:)=matrix(:,:,j) ...

xlswrite multidimensional array in one sheet.

This works, in any case if someone need it T=matrix ; for j=1:length(matrix) T(8*(j-1)+[1,dim(matrix)],:)=matrix(:,:,j) ...

7 mois ago | 0

| accepted

Question

xlswrite multidimensional array in one sheet.

I tried to export 6 x 6 x 1000 matrix from matlab to exel. However, the xlswrite overwrite it. I used the following loop to ...

7 mois ago | 2 answers | 0

Submitted

Four-bar-Linkage-simulation

This program is to solve inverse kinematics of four-bar linkage. Graphics simulation is included to see the solution on board.

8 mois ago | 21 downloads |

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

8 mois ago