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Answered

I want to get 2d image from a sensor data.What matlab commands convert a dataset to images?

A = rand(100,100) imshow(A) or A = (randi(1500,100,100))-750 image(A)

I want to get 2d image from a sensor data.What matlab commands convert a dataset to images?

A = rand(100,100) imshow(A) or A = (randi(1500,100,100))-750 image(A)

2 days ago | 0

Answered

How can I name matrices generated by a for loop as Z1,Z2,Z3 ...etc.

There are a lot of contributions (one of the best is here) which show why this way of coding is bad - use an efficient way by in...

How can I name matrices generated by a for loop as Z1,Z2,Z3 ...etc.

There are a lot of contributions (one of the best is here) which show why this way of coding is bad - use an efficient way by in...

3 days ago | 1

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Answered

Problem with solve matrix

For me your code works: disp('An economic system composed of 3 sectors has the input-output matrix'); D=[0.5,0.1,0.1;0.2,0.5,0...

Problem with solve matrix

For me your code works: disp('An economic system composed of 3 sectors has the input-output matrix'); D=[0.5,0.1,0.1;0.2,0.5,0...

4 days ago | 0

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Answered

ode45 solver code for solving a system of three coupled equations does not work

Your ode appears to be stiff - therefore i recommend to use ode15s instead of ode45. Also the behaviour of your system can be se...

ode45 solver code for solving a system of three coupled equations does not work

Your ode appears to be stiff - therefore i recommend to use ode15s instead of ode45. Also the behaviour of your system can be se...

23 days ago | 1

| accepted

Answered

i want to read a csv file and store as rows and columns of a cell

fileID = fopen('FOM_HFA_Pavg.csv'); content = textscan(fileID, '%s','Delimiter','\t'); fclose(fileID); content = content{:}; ...

i want to read a csv file and store as rows and columns of a cell

fileID = fopen('FOM_HFA_Pavg.csv'); content = textscan(fileID, '%s','Delimiter','\t'); fclose(fileID); content = content{:}; ...

23 days ago | 0

| accepted

Answered

calculate and plot the following differential equation using ODE45solver.

y0=0.5; %intial value h=0.8; % t=[0 4]; %tspan [t,y] =ode45(@(t,y)-y+sin(t), t,y0); plot(t,y,'-o'); xlabel('time'); ylabel...

calculate and plot the following differential equation using ODE45solver.

y0=0.5; %intial value h=0.8; % t=[0 4]; %tspan [t,y] =ode45(@(t,y)-y+sin(t), t,y0); plot(t,y,'-o'); xlabel('time'); ylabel...

23 days ago | 0

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Answered

using Q learning agent for continuous observation space

You also are allowed to write a custom critic function: https://de.mathworks.com/help/reinforcement-learning/ref/rlqvaluerepres...

using Q learning agent for continuous observation space

You also are allowed to write a custom critic function: https://de.mathworks.com/help/reinforcement-learning/ref/rlqvaluerepres...

23 days ago | 0

Answered

question ..question about engine matlab

Your code works - you only need to call your function and plot the results: % Call the function and save results in W and Fa [...

question ..question about engine matlab

Your code works - you only need to call your function and plot the results: % Call the function and save results in W and Fa [...

24 days ago | 0

Answered

Calculate a letter from equation with letters.

You might want to do this: syms Xe Ye a1 a2 cos1 cos2 sin1 sin2 eq(1) = Xe == a2*(cos1*cos2-sin1*sin2)+a1*cos1; eq(2) = Ye ==...

Calculate a letter from equation with letters.

You might want to do this: syms Xe Ye a1 a2 cos1 cos2 sin1 sin2 eq(1) = Xe == a2*(cos1*cos2-sin1*sin2)+a1*cos1; eq(2) = Ye ==...

24 days ago | 0

Answered

FZERO cannot continue because user-supplied function_handle ==> @(M)FindM(M,N(k),Q,wn(i)) failed with the error below.

Declare the code in findM_1P as a function and give it proper input and output arguments, to make it possible for fzero passing ...

FZERO cannot continue because user-supplied function_handle ==> @(M)FindM(M,N(k),Q,wn(i)) failed with the error below.

Declare the code in findM_1P as a function and give it proper input and output arguments, to make it possible for fzero passing ...

24 days ago | 0

Answered

IMRT Beam angle optimization

You might want to read the dissertation from Mark Bangert, which includes a rich bibliography: http://archiv.ub.uni-heidelberg....

IMRT Beam angle optimization

You might want to read the dissertation from Mark Bangert, which includes a rich bibliography: http://archiv.ub.uni-heidelberg....

29 days ago | 0

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Answered

Error in bin2dec ?

You are not doing wrong - just read the documentation: "...If the input argument D has a value greater than the value returned ...

Error in bin2dec ?

You are not doing wrong - just read the documentation: "...If the input argument D has a value greater than the value returned ...

29 days ago | 1

Answered

Combining 3 curves into 1 average

Here is a simple example: % fantasy times times1 = 1:10 times2 = 1:2:11 % fantasy values y1 = 2 * (1:10) y2 = 4 * (1:2:1...

Combining 3 curves into 1 average

Here is a simple example: % fantasy times times1 = 1:10 times2 = 1:2:11 % fantasy values y1 = 2 * (1:10) y2 = 4 * (1:2:1...

29 days ago | 0

Answered

A problem while using lsqnonlin

Use the same random numbers for the same results: rng('default') d = linspace(0,3); y = exp(-1.3*d) + 0.05*randn(size(d)); ...

A problem while using lsqnonlin

Use the same random numbers for the same results: rng('default') d = linspace(0,3); y = exp(-1.3*d) + 0.05*randn(size(d)); ...

29 days ago | 0

| accepted

Answered

Not getting six coupled ODEs solution using bvp4c in MATLAB, Please help me

I used nested functions - for 2 of the constants you did not provide values: % Call the outer function finalprogramme %% Ou...

Not getting six coupled ODEs solution using bvp4c in MATLAB, Please help me

I used nested functions - for 2 of the constants you did not provide values: % Call the outer function finalprogramme %% Ou...

29 days ago | 0

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Answered

Environment Reinforcment learning Matlab

See this link to the documentation: https://de.mathworks.com/help/reinforcement-learning/ug/create-custom-reinforcement-learnin...

Environment Reinforcment learning Matlab

See this link to the documentation: https://de.mathworks.com/help/reinforcement-learning/ug/create-custom-reinforcement-learnin...

1 month ago | 0

Answered

Custom Environment for Reinforcment learning

There is a step-by-step example in the documentaion: https://de.mathworks.com/help/reinforcement-learning/ug/create-custom-rein...

Custom Environment for Reinforcment learning

There is a step-by-step example in the documentaion: https://de.mathworks.com/help/reinforcement-learning/ug/create-custom-rein...

1 month ago | 0

Answered

Please tell me how?

You need to perform a inverse laplace transformation: num=134; den=[1 16 134]; x=tf(num,den) subplot(1,2,1) step(x) title(...

Please tell me how?

You need to perform a inverse laplace transformation: num=134; den=[1 16 134]; x=tf(num,den) subplot(1,2,1) step(x) title(...

1 month ago | 1

Answered

write function that generates an echo to audio

Hi Franziska, there is no need for loops: % Load sample sound load TestSoundEcho.mat; % Play sample sound sound(data, fs)...

write function that generates an echo to audio

Hi Franziska, there is no need for loops: % Load sample sound load TestSoundEcho.mat; % Play sample sound sound(data, fs)...

1 month ago | 0

Answered

Output a solution for a function at a specific value input

magT = @(omega)sqrt((5.903*10^24)^2+(1.181*10^20*omega)^2)/sqrt((1.181*10^25-(2.361*10^16*omega^2))^2+(9.445*10^20*omega)^2); ...

Output a solution for a function at a specific value input

magT = @(omega)sqrt((5.903*10^24)^2+(1.181*10^20*omega)^2)/sqrt((1.181*10^25-(2.361*10^16*omega^2))^2+(9.445*10^20*omega)^2); ...

1 month ago | 0

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Answered

solving integral in matlab

What you are looking for is an analytical solution. The integral function does solve numeric. To solve symbolic use int as John ...

solving integral in matlab

What you are looking for is an analytical solution. The integral function does solve numeric. To solve symbolic use int as John ...

1 month ago | 1

Answered

Split data into groups

A = randi(5000,300,1); % random data A = sortrows(A); % sort it low = A(1:100); % just use indexing now mid = A(101:200); hi...

Split data into groups

A = randi(5000,300,1); % random data A = sortrows(A); % sort it low = A(1:100); % just use indexing now mid = A(101:200); hi...

1 month ago | 0

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Answered

Syntax error when opening a file using a path. it says " use a newline, semicolon, or comma before this statement "

It is unclear what you want: maybe you forgot to underline your variable name function_data = angleAnalysis_withPlots('C:/rese...

Syntax error when opening a file using a path. it says " use a newline, semicolon, or comma before this statement "

It is unclear what you want: maybe you forgot to underline your variable name function_data = angleAnalysis_withPlots('C:/rese...

1 month ago | 0

Answered

HELP: looping a function and plot (ode23)

tspan1 = [0, 4]; tspan2 = [4, 10]; y0 = [0, 0]; [t1_r1, y1_r1] = ode23(@(t,y) fun(t,y,0.5,5), tspan1, y0); [t2_r1, y2_r1] ...

HELP: looping a function and plot (ode23)

tspan1 = [0, 4]; tspan2 = [4, 10]; y0 = [0, 0]; [t1_r1, y1_r1] = ode23(@(t,y) fun(t,y,0.5,5), tspan1, y0); [t2_r1, y2_r1] ...

1 month ago | 1

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Answered

problem with table / array/cell

Your table content is a cell array - Read the Tips section from the documentation. It tells you why and how to deal with it. ce...

problem with table / array/cell

Your table content is a cell array - Read the Tips section from the documentation. It tells you why and how to deal with it. ce...

1 month ago | 0

Answered

Solve ODE with BC

I doubt that your ode has an analytical solution - however here is a minimal working example of how to include BC's in a symboli...

Solve ODE with BC

I doubt that your ode has an analytical solution - however here is a minimal working example of how to include BC's in a symboli...

1 month ago | 0

| accepted

Answered

Respective matrices for different sheets in imported file frin excel

Use the 'sheet' option like shown here: https://de.mathworks.com/help/matlab/ref/readtable.html#d120e1047964 contentTable = rea...

Respective matrices for different sheets in imported file frin excel

Use the 'sheet' option like shown here: https://de.mathworks.com/help/matlab/ref/readtable.html#d120e1047964 contentTable = rea...

1 month ago | 0

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Answered

I'm trying to integrate, but I get an "undefined function" error.

int does not accept numerical inputs, because it performs symbolic integration - so you have to define a numerical vector for t ...

I'm trying to integrate, but I get an "undefined function" error.

int does not accept numerical inputs, because it performs symbolic integration - so you have to define a numerical vector for t ...

1 month ago | 0

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Answered

Error using vertcat Dimensions of arrays being concatenated are not consistent. For solving ODE

tspan = [0 60]; %Initial Value C_V0 = 0; %x(1) C_I0 = 0; %x(2) C_C0 = 2; %x(3) C_W0 = 0; %x(4) C_G0 = 0; %x(5) [t,x] ...

Error using vertcat Dimensions of arrays being concatenated are not consistent. For solving ODE

tspan = [0 60]; %Initial Value C_V0 = 0; %x(1) C_I0 = 0; %x(2) C_C0 = 2; %x(3) C_W0 = 0; %x(4) C_G0 = 0; %x(5) [t,x] ...

1 month ago | 1

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Answered

calling a variable in another function

function [LookupTableFiles]=getaerotablelisting( FilePrefix, DirectoryName , filetype ) FileList = dir('DynamicData...

calling a variable in another function

function [LookupTableFiles]=getaerotablelisting( FilePrefix, DirectoryName , filetype ) FileList = dir('DynamicData...

1 month ago | 0