Answered

numeric integral, symbolic function, whats wrong here?

clc clear syms t; rho = exp(sin(t)); theta = 2*exp(sin(t)); phi = 3*exp(sin(t)); rho_dot = diff(rho); theta_dot ...

numeric integral, symbolic function, whats wrong here?

clc clear syms t; rho = exp(sin(t)); theta = 2*exp(sin(t)); phi = 3*exp(sin(t)); rho_dot = diff(rho); theta_dot ...

3 meses ago | 0

| accepted

Answered

Supplied objective function must return a scalar value. ERROR in fmincon

J is a 1x6 vector, but should be a scalar. You have to find out why and fix this.

Supplied objective function must return a scalar value. ERROR in fmincon

J is a 1x6 vector, but should be a scalar. You have to find out why and fix this.

3 meses ago | 0

Answered

Bvp with unknown parameter

Try this using a good initial guess: <https://de.mathworks.com/help/matlab/math/solve-bvp-with-unknown-parameter.html>

Bvp with unknown parameter

Try this using a good initial guess: <https://de.mathworks.com/help/matlab/math/solve-bvp-with-unknown-parameter.html>

3 meses ago | 1

Answered

Matrix symbolic calculation doesn't simplify expressions

try simplify - here is an example with your expression: syms w E = eye(3) * - (2^(1/2)*((2^(1/2)*w*1i)/2 - 2^(1/2)/8))/2 + (2^...

Matrix symbolic calculation doesn't simplify expressions

try simplify - here is an example with your expression: syms w E = eye(3) * - (2^(1/2)*((2^(1/2)*w*1i)/2 - 2^(1/2)/8))/2 + (2^...

4 meses ago | 1

| accepted

Answered

char to vector conversion. using matrix of chars (16x128)

str2double or str2num should work for this.

char to vector conversion. using matrix of chars (16x128)

str2double or str2num should work for this.

4 meses ago | 0

Answered

Keep getting 'ans' output in Matlab function

Call it this way: [outResult, logoutResult] = file1(scalar, genvec)

Keep getting 'ans' output in Matlab function

Call it this way: [outResult, logoutResult] = file1(scalar, genvec)

4 meses ago | 0

| accepted

Answered

matrix manupulation and reading diagonally

This function may help: M = [13,10,5,2;7,14,11,6;3,8,15,12;1,4,9,16] MyResult = readDiag(M) function R = readDiag(M) R = c...

matrix manupulation and reading diagonally

This function may help: M = [13,10,5,2;7,14,11,6;3,8,15,12;1,4,9,16] MyResult = readDiag(M) function R = readDiag(M) R = c...

4 meses ago | 0

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Answered

How to cite only part of a vector in an equation?

One possible way: You could use findgroups in combination with splitapply. For example, a JaneDoe group would be a member of th...

How to cite only part of a vector in an equation?

One possible way: You could use findgroups in combination with splitapply. For example, a JaneDoe group would be a member of th...

4 meses ago | 0

Answered

how to train image?

A good starting point maybe here: https://de.mathworks.com/help/deeplearning/getting-started-with-deep-learning-toolbox.html?s_...

how to train image?

A good starting point maybe here: https://de.mathworks.com/help/deeplearning/getting-started-with-deep-learning-toolbox.html?s_...

4 meses ago | 0

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Answered

How can i use toeplitz in cell arrays?

G = cell(1,2); G{1} = ones(2); G{2} = 2*ones(2); c = [G{1} G{2}]; r = [G{1} zeros(2)]; result = toeplitz(c,r) results ...

How can i use toeplitz in cell arrays?

G = cell(1,2); G{1} = ones(2); G{2} = 2*ones(2); c = [G{1} G{2}]; r = [G{1} zeros(2)]; result = toeplitz(c,r) results ...

4 meses ago | 0

Answered

Solving equation for a value of x

You can use polyder, that calculates the derivative of a polynomial and then you can calculate the result at x=20 using polyval....

Solving equation for a value of x

You can use polyder, that calculates the derivative of a polynomial and then you can calculate the result at x=20 using polyval....

4 meses ago | 0

| accepted

Answered

Index in position 1 is invalid PID Controller

When you run this the first time you first call the inbuilt function tf and then later you create a variable, which is named tf ...

Index in position 1 is invalid PID Controller

When you run this the first time you first call the inbuilt function tf and then later you create a variable, which is named tf ...

4 meses ago | 0

Answered

min- imum number of coins required to pay

You have some issues in your if-else structure, but also you have a numerical problem - use uint datatype to avoid this: [NumCo...

min- imum number of coins required to pay

You have some issues in your if-else structure, but also you have a numerical problem - use uint datatype to avoid this: [NumCo...

4 meses ago | 1

| accepted

Answered

Problems using NVIDIA GeForce RTX 3090 for Deep Learning

Even if you don't like it, the best and probably most up-to-date answer to this question is: https://de.mathworks.com/matlabcen...

Problems using NVIDIA GeForce RTX 3090 for Deep Learning

Even if you don't like it, the best and probably most up-to-date answer to this question is: https://de.mathworks.com/matlabcen...

4 meses ago | 0

Answered

Show every step of lsqnonlin won't work

I think you look for something like this: phi1=1:((2*pi/10.71)):2*pi; r = -0.5 + (0.5 + 0.5) * rand(1,10); xrand ...

Show every step of lsqnonlin won't work

I think you look for something like this: phi1=1:((2*pi/10.71)):2*pi; r = -0.5 + (0.5 + 0.5) * rand(1,10); xrand ...

4 meses ago | 0

Answered

4-D uint8 , what does it mean?

There is a 2D for height and width of the video, which shows the resolution, the 3rd D is for example is of size 3 for RGB or of...

4-D uint8 , what does it mean?

There is a 2D for height and width of the video, which shows the resolution, the 3rd D is for example is of size 3 for RGB or of...

4 meses ago | 1

| accepted

Answered

Solve nonlinear equation using ODE45 function with different initial conditions

Corrected: %% Main Script L = 1; g = 9.81; h = 0.25; t = [0 5]; A = [0 1;(g/L) 0]; B =[0 1]'; Ics = [pi,0;pi/2 0;pi/5 ...

Solve nonlinear equation using ODE45 function with different initial conditions

Corrected: %% Main Script L = 1; g = 9.81; h = 0.25; t = [0 5]; A = [0 1;(g/L) 0]; B =[0 1]'; Ics = [pi,0;pi/2 0;pi/5 ...

4 meses ago | 0

Answered

Getting value of an optimisation variable in an optimisation problem

disp(sol)

Getting value of an optimisation variable in an optimisation problem

disp(sol)

4 meses ago | 0

Answered

How can i write a Objective function in vectorized form for GA optimization toolbox when the Objective function has many varialbess?

str1 = ("x(:," + (1:100) + ") .*"); str2 = ("x(:," + (101:200) + ") .*"); str3 = ("x(:," + (201:300) + ") +"); str = vertcat(...

How can i write a Objective function in vectorized form for GA optimization toolbox when the Objective function has many varialbess?

str1 = ("x(:," + (1:100) + ") .*"); str2 = ("x(:," + (101:200) + ") .*"); str3 = ("x(:," + (201:300) + ") +"); str = vertcat(...

4 meses ago | 1

| accepted

Answered

Error using optimoptions (Reference to non-existent field 'TolFunValue')

For *|optimoptoptions|* the correct option is *|FunctionTolerance|*. The usage of *|TolFunValue|* is the equivalent option when ...

Error using optimoptions (Reference to non-existent field 'TolFunValue')

For *|optimoptoptions|* the correct option is *|FunctionTolerance|*. The usage of *|TolFunValue|* is the equivalent option when ...

4 meses ago | 1

| accepted

Answered

Alternative to the function "findpeaks for the Version R2012b

Check FEX: https://de.mathworks.com/matlabcentral/fileexchange/25500-peakfinder-x0-sel-thresh-extrema-includeendpoints-interpol...

Alternative to the function "findpeaks for the Version R2012b

Check FEX: https://de.mathworks.com/matlabcentral/fileexchange/25500-peakfinder-x0-sel-thresh-extrema-includeendpoints-interpol...

4 meses ago | 0

| accepted

Answered

curly brackets system of equations via LaTeX

figure title({'$sin(x-y)-xy+1=0$','$x^2-y^2=0.75$'}, 'Interpreter','LaTex')

curly brackets system of equations via LaTeX

figure title({'$sin(x-y)-xy+1=0$','$x^2-y^2=0.75$'}, 'Interpreter','LaTex')

4 meses ago | 1

Answered

Global optimization: transfer variables to non-linear constraints

nonlcon = @(x)unitdiscc(x,a,b,c,d...)

Global optimization: transfer variables to non-linear constraints

nonlcon = @(x)unitdiscc(x,a,b,c,d...)

4 meses ago | 0

| accepted

Answered

Convert single data to double

You might want to use <https://de.mathworks.com/help/matlab/ref/squeeze.html *|squeeze|*> and <https://de.mathworks.com/help/mat...

Convert single data to double

You might want to use <https://de.mathworks.com/help/matlab/ref/squeeze.html *|squeeze|*> and <https://de.mathworks.com/help/mat...

4 meses ago | 0

| accepted

Answered

Help With plotting 3D Graph

Use: t=t.'; then call Result = psi(t) Also make sure that t is length needed --> here 2000

Help With plotting 3D Graph

Use: t=t.'; then call Result = psi(t) Also make sure that t is length needed --> here 2000

4 meses ago | 0

| accepted

Answered

Importing Engine Map Variables

T = readtable('C:\YOUR_PATH_NAME_HERE\Veri-MATLAB.xlsx') RPM = T{2:end,1} Power = T{1,2:end} Data = T{2:end,2:end} subpl...

Importing Engine Map Variables

T = readtable('C:\YOUR_PATH_NAME_HERE\Veri-MATLAB.xlsx') RPM = T{2:end,1} Power = T{1,2:end} Data = T{2:end,2:end} subpl...

4 meses ago | 1

| accepted

Answered

differentiation in matlab of two functions

syms a(theta) p q A eq1 = a(theta)==exp(2*pi*1i*A*[cos(theta);sin(theta)]) eq2 = theta==atan(p/q)+pi Deq1 = diff(eq1,thet...

differentiation in matlab of two functions

syms a(theta) p q A eq1 = a(theta)==exp(2*pi*1i*A*[cos(theta);sin(theta)]) eq2 = theta==atan(p/q)+pi Deq1 = diff(eq1,thet...

4 meses ago | 0

Answered

Fimplicit not plotting properly

fun1=@(x,y) a.*x.^2+2*h.*x.*y+b*y.^2+2*g.*x+2*f.*y+c; a=2; h=0; b=0; g=3/2; f=1/2; c=7; fimplicit(fun1,[-3 2 -12 -5])

Fimplicit not plotting properly

fun1=@(x,y) a.*x.^2+2*h.*x.*y+b*y.^2+2*g.*x+2*f.*y+c; a=2; h=0; b=0; g=3/2; f=1/2; c=7; fimplicit(fun1,[-3 2 -12 -5])

4 meses ago | 1

| accepted

Answered

How to rotate a video 180 degrees?

vidName = 'xylophone.mp4'; vidPath = strcat(videosPathToBeEdited, vidName); V = VideoReader(vidName); % read the complete ...

How to rotate a video 180 degrees?

vidName = 'xylophone.mp4'; vidPath = strcat(videosPathToBeEdited, vidName); V = VideoReader(vidName); % read the complete ...

4 meses ago | 1

| accepted

Answered

How to loop function for a 2 column matrix

You do not need a loop - the distance function is vectorized and accepts vector-inputs. You simply need to use indexing to get w...

How to loop function for a 2 column matrix

You do not need a loop - the distance function is vectorized and accepts vector-inputs. You simply need to use indexing to get w...

4 meses ago | 1

| accepted