i already combine like this

% Initialize variables
rows = []; columns = [];
% Loop through each slice
for k = 1:100
fileName = sprintf(‘_%d.txt’, k);

% Read the text file
sliceImage = dlmread(fileName);

% Check the size of the first slice to initialize the 3D array
if isempty(rows) || isempty(columns)
[rows, columns] = size(sliceImage);
image3d = zeros(rows, columns, 8, ‘uint8’); % Initialize 3D array
end

% Convert to uint8
sliceImage = uint8(sliceImage);

% Put this slice into plane k of the 3D image
image3d(:, :, k) = sliceImage;
endi already combine like this

% Initialize variables
rows = []; columns = [];
% Loop through each slice
for k = 1:100
fileName = sprintf(‘_%d.txt’, k);

% Read the text file
sliceImage = dlmread(fileName);

% Check the size of the first slice to initialize the 3D array
if isempty(rows) || isempty(columns)
[rows, columns] = size(sliceImage);
image3d = zeros(rows, columns, 8, ‘uint8’); % Initialize 3D array
end

% Convert to uint8
sliceImage = uint8(sliceImage);

% Put this slice into plane k of the 3D image
image3d(:, :, k) = sliceImage;
end i already combine like this

% Initialize variables
rows = []; columns = [];
% Loop through each slice
for k = 1:100
fileName = sprintf(‘_%d.txt’, k);

% Read the text file
sliceImage = dlmread(fileName);

% Check the size of the first slice to initialize the 3D array
if isempty(rows) || isempty(columns)
[rows, columns] = size(sliceImage);
image3d = zeros(rows, columns, 8, ‘uint8’); % Initialize 3D array
end

% Convert to uint8
sliceImage = uint8(sliceImage);

% Put this slice into plane k of the 3D image
image3d(:, :, k) = sliceImage;
end 3d plots, image segmentation MATLAB Answers — New Questions

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I want to improve the running speed of the code converted from Simulink to C coder, so I tried setting the maximum running speed mode in it, but the result was similar to balancing RAM and speed mode. So I tried to modify more detailed settings, I tried to modify the settings to regenerate optimized code by removing out of range floating-point to integer conversion code, but still had no effect. Why is this? Is there any other setting in the model that can improve the running speed of the code? Or should I directly modify the structure of the code to improve speed?I want to improve the running speed of the code converted from Simulink to C coder, so I tried setting the maximum running speed mode in it, but the result was similar to balancing RAM and speed mode. So I tried to modify more detailed settings, I tried to modify the settings to regenerate optimized code by removing out of range floating-point to integer conversion code, but still had no effect. Why is this? Is there any other setting in the model that can improve the running speed of the code? Or should I directly modify the structure of the code to improve speed? I want to improve the running speed of the code converted from Simulink to C coder, so I tried setting the maximum running speed mode in it, but the result was similar to balancing RAM and speed mode. So I tried to modify more detailed settings, I tried to modify the settings to regenerate optimized code by removing out of range floating-point to integer conversion code, but still had no effect. Why is this? Is there any other setting in the model that can improve the running speed of the code? Or should I directly modify the structure of the code to improve speed? simulink, embedded coder MATLAB Answers — New Questions

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I exported an FMU from a Simulink model with Simulink Compiler and imported it into Simulink with FMU Import block.
In the results, when comparing the Simulink output and the FMU output, I see that they do not match with a one-time step difference/one-time step delay.

What is causing this behavior?I exported an FMU from a Simulink model with Simulink Compiler and imported it into Simulink with FMU Import block.
In the results, when comparing the Simulink output and the FMU output, I see that they do not match with a one-time step difference/one-time step delay.

What is causing this behavior? I exported an FMU from a Simulink model with Simulink Compiler and imported it into Simulink with FMU Import block.
In the results, when comparing the Simulink output and the FMU output, I see that they do not match with a one-time step difference/one-time step delay.

What is causing this behavior? fmu, delay, time, step, different, results, simulink, fmi MATLAB Answers — New Questions

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I am trying to sign out of my MATLAB account on the desktop app, yet it is not letting me.
I keep getting this message, although I have nothing open aside from MATLAB and no scripts are running: Before signing out you must:
Close all MATLAB sessions, including the current one.Note: Restarting MATLAB requires internet access.I am trying to sign out of my MATLAB account on the desktop app, yet it is not letting me.
I keep getting this message, although I have nothing open aside from MATLAB and no scripts are running: Before signing out you must:
Close all MATLAB sessions, including the current one.Note: Restarting MATLAB requires internet access. I am trying to sign out of my MATLAB account on the desktop app, yet it is not letting me.
I keep getting this message, although I have nothing open aside from MATLAB and no scripts are running: Before signing out you must:
Close all MATLAB sessions, including the current one.Note: Restarting MATLAB requires internet access. matlab MATLAB Answers — New Questions

​

What is the syntax for reading data from Microsoft Excel sheets? I tried the following and it returned error messages.
A = xlsread(‘amat.xlsx’,’sheet1′,’a1:a10′)
I even changed the case of S in sheet to capital and the error persisted. Anyone with an idea?What is the syntax for reading data from Microsoft Excel sheets? I tried the following and it returned error messages.
A = xlsread(‘amat.xlsx’,’sheet1′,’a1:a10′)
I even changed the case of S in sheet to capital and the error persisted. Anyone with an idea? What is the syntax for reading data from Microsoft Excel sheets? I tried the following and it returned error messages.
A = xlsread(‘amat.xlsx’,’sheet1′,’a1:a10′)
I even changed the case of S in sheet to capital and the error persisted. Anyone with an idea? transferred MATLAB Answers — New Questions

​

Similar question has been asked before, but I would ask the question in a more specific manner. If the function in the input end has more than one output, there will be the error ‘Not enough input arguments’. Is there a neat way to make chained function out of that situation?
f(g) % only the first output of g is kept as input for f

function [x, y] = g()
x = 1;
y = 2;
end

function out = f(x, y)
out = x+y;
end

Storing the outputs of the first function in two variables could be a solution, but I like to see how chaining could be done in this kind of scenario for the sake of learning.
[x, y] = g();
f(x, y)Similar question has been asked before, but I would ask the question in a more specific manner. If the function in the input end has more than one output, there will be the error ‘Not enough input arguments’. Is there a neat way to make chained function out of that situation?
f(g) % only the first output of g is kept as input for f

function [x, y] = g()
x = 1;
y = 2;
end

function out = f(x, y)
out = x+y;
end

Storing the outputs of the first function in two variables could be a solution, but I like to see how chaining could be done in this kind of scenario for the sake of learning.
[x, y] = g();
f(x, y) Similar question has been asked before, but I would ask the question in a more specific manner. If the function in the input end has more than one output, there will be the error ‘Not enough input arguments’. Is there a neat way to make chained function out of that situation?
f(g) % only the first output of g is kept as input for f

function [x, y] = g()
x = 1;
y = 2;
end

function out = f(x, y)
out = x+y;
end

Storing the outputs of the first function in two variables could be a solution, but I like to see how chaining could be done in this kind of scenario for the sake of learning.
[x, y] = g();
f(x, y) chained_function, function_chaining, function_composition MATLAB Answers — New Questions

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Hello,
Is there anyway to determine when a machine physically receives a UDP packet from the network?
Thanks!Hello,
Is there anyway to determine when a machine physically receives a UDP packet from the network?
Thanks! Hello,
Is there anyway to determine when a machine physically receives a UDP packet from the network?
Thanks! udp MATLAB Answers — New Questions

​

I have an Arduino Uno device and have attempted to attach it to one of my computer’s COM Ports via a USB cable. I have downloaded the MATLAB Support Package for Arduino Hardware, and ensured that it is correctly accessed by my MATLAB installation via the following commands:

>> restoredefaultpath
>> rehash toolboxcache
Following this, I enter the "arduinosetup" command into my MATLAB Command Window, and follow the instructions described in the following MATLAB Documentation:
https://www.mathworks.com/help/supportpkg/arduinoio/ug/configure-setup-for-arduino-hardware.html

I have ensured that I am selecting both the correct board as well as the correct COM port. However, when I press "Program", I receive the following error message:

Failed to program the arduino board. Click the following link to see the error log. Contact Technical support if you need more help.
Clicking the link in that message provides me a TXT file with a fairly large stack trace. The most important lines, however, seem to be at the end. These read the following:

avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "C:ProgramDataMATLABSupportPackagesR2023aaIDEhardwaretoolsavr/etc/avrdude.conf"

Using Port : COM5
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: ser_open(): can’t set com-state for "\.COM5"

avrdude done. Thank you.

An error occurred while uploading the sketch
Upon receiving this error, I tried a few initial troubleshooting steps:Uninstalling and then reinstalling the MATLAB Support Package for Arduino Hardware.Connecting to a different COM port.Restarting both my system and my Arduino board.
Unfortunately, none of the above steps changed the resulting error message. How do I fix this and ensure that I am able to interact with my Arduino board via MATLAB?I have an Arduino Uno device and have attempted to attach it to one of my computer’s COM Ports via a USB cable. I have downloaded the MATLAB Support Package for Arduino Hardware, and ensured that it is correctly accessed by my MATLAB installation via the following commands:

>> restoredefaultpath
>> rehash toolboxcache
Following this, I enter the "arduinosetup" command into my MATLAB Command Window, and follow the instructions described in the following MATLAB Documentation:
https://www.mathworks.com/help/supportpkg/arduinoio/ug/configure-setup-for-arduino-hardware.html

I have ensured that I am selecting both the correct board as well as the correct COM port. However, when I press "Program", I receive the following error message:

Failed to program the arduino board. Click the following link to see the error log. Contact Technical support if you need more help.
Clicking the link in that message provides me a TXT file with a fairly large stack trace. The most important lines, however, seem to be at the end. These read the following:

avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "C:ProgramDataMATLABSupportPackagesR2023aaIDEhardwaretoolsavr/etc/avrdude.conf"

Using Port : COM5
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: ser_open(): can’t set com-state for "\.COM5"

avrdude done. Thank you.

An error occurred while uploading the sketch
Upon receiving this error, I tried a few initial troubleshooting steps:Uninstalling and then reinstalling the MATLAB Support Package for Arduino Hardware.Connecting to a different COM port.Restarting both my system and my Arduino board.
Unfortunately, none of the above steps changed the resulting error message. How do I fix this and ensure that I am able to interact with my Arduino board via MATLAB? I have an Arduino Uno device and have attempted to attach it to one of my computer’s COM Ports via a USB cable. I have downloaded the MATLAB Support Package for Arduino Hardware, and ensured that it is correctly accessed by my MATLAB installation via the following commands:

>> restoredefaultpath
>> rehash toolboxcache
Following this, I enter the "arduinosetup" command into my MATLAB Command Window, and follow the instructions described in the following MATLAB Documentation:
https://www.mathworks.com/help/supportpkg/arduinoio/ug/configure-setup-for-arduino-hardware.html

I have ensured that I am selecting both the correct board as well as the correct COM port. However, when I press "Program", I receive the following error message:

Failed to program the arduino board. Click the following link to see the error log. Contact Technical support if you need more help.
Clicking the link in that message provides me a TXT file with a fairly large stack trace. The most important lines, however, seem to be at the end. These read the following:

avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "C:ProgramDataMATLABSupportPackagesR2023aaIDEhardwaretoolsavr/etc/avrdude.conf"

Using Port : COM5
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: ser_open(): can’t set com-state for "\.COM5"

avrdude done. Thank you.

An error occurred while uploading the sketch
Upon receiving this error, I tried a few initial troubleshooting steps:Uninstalling and then reinstalling the MATLAB Support Package for Arduino Hardware.Connecting to a different COM port.Restarting both my system and my Arduino board.
Unfortunately, none of the above steps changed the resulting error message. How do I fix this and ensure that I am able to interact with my Arduino board via MATLAB? arduino, program, driver, drivers, avrdude, com, port MATLAB Answers — New Questions

​

Dear all,
I am using symbolic integration in Matlab (in particular the "int"-function). I would like to use it as a reference in my research. Therefore, it would be nice to obtain some details which methods Matlab is actually using. Does anybody know? Is there a source to get more details?
Best,
MichaelDear all,
I am using symbolic integration in Matlab (in particular the "int"-function). I would like to use it as a reference in my research. Therefore, it would be nice to obtain some details which methods Matlab is actually using. Does anybody know? Is there a source to get more details?
Best,
Michael Dear all,
I am using symbolic integration in Matlab (in particular the "int"-function). I would like to use it as a reference in my research. Therefore, it would be nice to obtain some details which methods Matlab is actually using. Does anybody know? Is there a source to get more details?
Best,
Michael integration, symbolic, theory MATLAB Answers — New Questions

​

Hello, i wrote a code and it works while running the script. but when i use it in an app this error shows up Attempt to add "theta" to a static workspace. can somebody help me out. thanks
The code:
%% Constants and parameters
J1 = 1; % Polarization of outer magnet
J2 = 1; % Polarization of inner magnet
u0 = pi*4e-7; % Magnetic constant

%% Position vectors, define appropriately
r = [0.25, 0.3, 0.20 , 0.24]; % radius of magnets (outer to inner)
z = [0.05, 0.15, 0.08, 0.18]; % z cordinate of magnets (outer to inner)

%% main function g
g = @(a, b, c) computeG(a, b, c);

% Initialize F_Z
F_Z = 0;

% Compute F_Z based on the given formula
for i = 1:2
for k = 1:2
for j = 3:4
for l = 3:4
deltaZ = z(k) – z(l);
ri2 = r(i)^2;
rj2 = r(j)^2;
Fijkl = r(i) * r(j) * g(deltaZ, ri2+rj2+deltaZ^2, -2 * r(i) * r(j));
power = 1 + i + j + k + l;
F_Z = F_Z + ((-1)^power) * Fijkl;
end
end
end
end

F_Z = ((J1 * J2) / (2 * u0)) * F_Z;

%% Define the function computeG
function result = computeG(a, b, c)
A = (a^2 – b) / c * pi + sqrt(c^2 – (a^2 – b)^2) / c *(log((-16 * c^2) / ((c^2 – (a^2 – b)^2)^1.5)) + log(c^2 / ((c^2 – (a^2 – b)^2)^1.5)));

S = computeS(a, b, c);
result = A + S;
end

%% Define the function computeS
function S = computeS(a, b, c)
% Define constants
epsilon = c / (c – b);
beta = (b + c) / (b – c);
mu = c / (b + c);

% Calculate terms for S
term1 = (2 * 1i * a) / (c * sqrt(b + c)) * …
((b + c) * ellipticE(asin(sqrt(beta)), beta^(-1)) – c * ellipticF(asin(sqrt(beta)), beta^(-1)));
term2 = (2 * a) / (c * sqrt(b – c) * sqrt(epsilon)) * …
(c / sqrt(mu) * ellipticE1(1 / beta) – c * sqrt(mu) * ellipticK(1 / beta));
term3 = sqrt(epsilon * (1 / beta)) * …
((b – a^2) * ellipticK(2 * mu) + (a^2 – b + c) * ellipticPi(2 * c / (c + b – a^2), 2 * mu));

% Sum all terms
S = term1 + term2 + term3;
end

% Elliptic integral functions using symbolic math toolbox
function val = ellipticK(m)
syms theta;
val = double(int(1 / sqrt(1 – m * sin(theta)^2), theta, 0, pi/2));
end

function val = ellipticF(phi, m)
syms theta;
val = double(int(1 / sqrt(1 – m * sin(theta)^2), theta, 0, phi));
end

function val = ellipticE(phi, m)
syms theta;
val = double(int(sqrt(1 – m * sin(theta)^2), theta, 0, phi));
end

function val = ellipticE1(m)
syms theta;
val = double(int(sqrt(1 – m * sin(theta)^2), theta, 0, pi/2));
end

function val = ellipticPi(n, m)
syms theta;
val = double(int(1 / (sqrt(1 – n * sin(theta)^2) * sqrt(1 – m * sin(theta)^2)), theta, 0, pi/2));
endHello, i wrote a code and it works while running the script. but when i use it in an app this error shows up Attempt to add "theta" to a static workspace. can somebody help me out. thanks
The code:
%% Constants and parameters
J1 = 1; % Polarization of outer magnet
J2 = 1; % Polarization of inner magnet
u0 = pi*4e-7; % Magnetic constant

%% Position vectors, define appropriately
r = [0.25, 0.3, 0.20 , 0.24]; % radius of magnets (outer to inner)
z = [0.05, 0.15, 0.08, 0.18]; % z cordinate of magnets (outer to inner)

%% main function g
g = @(a, b, c) computeG(a, b, c);

% Initialize F_Z
F_Z = 0;

% Compute F_Z based on the given formula
for i = 1:2
for k = 1:2
for j = 3:4
for l = 3:4
deltaZ = z(k) – z(l);
ri2 = r(i)^2;
rj2 = r(j)^2;
Fijkl = r(i) * r(j) * g(deltaZ, ri2+rj2+deltaZ^2, -2 * r(i) * r(j));
power = 1 + i + j + k + l;
F_Z = F_Z + ((-1)^power) * Fijkl;
end
end
end
end

F_Z = ((J1 * J2) / (2 * u0)) * F_Z;

%% Define the function computeG
function result = computeG(a, b, c)
A = (a^2 – b) / c * pi + sqrt(c^2 – (a^2 – b)^2) / c *(log((-16 * c^2) / ((c^2 – (a^2 – b)^2)^1.5)) + log(c^2 / ((c^2 – (a^2 – b)^2)^1.5)));

S = computeS(a, b, c);
result = A + S;
end

%% Define the function computeS
function S = computeS(a, b, c)
% Define constants
epsilon = c / (c – b);
beta = (b + c) / (b – c);
mu = c / (b + c);

% Calculate terms for S
term1 = (2 * 1i * a) / (c * sqrt(b + c)) * …
((b + c) * ellipticE(asin(sqrt(beta)), beta^(-1)) – c * ellipticF(asin(sqrt(beta)), beta^(-1)));
term2 = (2 * a) / (c * sqrt(b – c) * sqrt(epsilon)) * …
(c / sqrt(mu) * ellipticE1(1 / beta) – c * sqrt(mu) * ellipticK(1 / beta));
term3 = sqrt(epsilon * (1 / beta)) * …
((b – a^2) * ellipticK(2 * mu) + (a^2 – b + c) * ellipticPi(2 * c / (c + b – a^2), 2 * mu));

% Sum all terms
S = term1 + term2 + term3;
end

% Elliptic integral functions using symbolic math toolbox
function val = ellipticK(m)
syms theta;
val = double(int(1 / sqrt(1 – m * sin(theta)^2), theta, 0, pi/2));
end

function val = ellipticF(phi, m)
syms theta;
val = double(int(1 / sqrt(1 – m * sin(theta)^2), theta, 0, phi));
end

function val = ellipticE(phi, m)
syms theta;
val = double(int(sqrt(1 – m * sin(theta)^2), theta, 0, phi));
end

function val = ellipticE1(m)
syms theta;
val = double(int(sqrt(1 – m * sin(theta)^2), theta, 0, pi/2));
end

function val = ellipticPi(n, m)
syms theta;
val = double(int(1 / (sqrt(1 – n * sin(theta)^2) * sqrt(1 – m * sin(theta)^2)), theta, 0, pi/2));
end Hello, i wrote a code and it works while running the script. but when i use it in an app this error shows up Attempt to add "theta" to a static workspace. can somebody help me out. thanks
The code:
%% Constants and parameters
J1 = 1; % Polarization of outer magnet
J2 = 1; % Polarization of inner magnet
u0 = pi*4e-7; % Magnetic constant

%% Position vectors, define appropriately
r = [0.25, 0.3, 0.20 , 0.24]; % radius of magnets (outer to inner)
z = [0.05, 0.15, 0.08, 0.18]; % z cordinate of magnets (outer to inner)

%% main function g
g = @(a, b, c) computeG(a, b, c);

% Initialize F_Z
F_Z = 0;

% Compute F_Z based on the given formula
for i = 1:2
for k = 1:2
for j = 3:4
for l = 3:4
deltaZ = z(k) – z(l);
ri2 = r(i)^2;
rj2 = r(j)^2;
Fijkl = r(i) * r(j) * g(deltaZ, ri2+rj2+deltaZ^2, -2 * r(i) * r(j));
power = 1 + i + j + k + l;
F_Z = F_Z + ((-1)^power) * Fijkl;
end
end
end
end

F_Z = ((J1 * J2) / (2 * u0)) * F_Z;

%% Define the function computeG
function result = computeG(a, b, c)
A = (a^2 – b) / c * pi + sqrt(c^2 – (a^2 – b)^2) / c *(log((-16 * c^2) / ((c^2 – (a^2 – b)^2)^1.5)) + log(c^2 / ((c^2 – (a^2 – b)^2)^1.5)));

S = computeS(a, b, c);
result = A + S;
end

%% Define the function computeS
function S = computeS(a, b, c)
% Define constants
epsilon = c / (c – b);
beta = (b + c) / (b – c);
mu = c / (b + c);

% Calculate terms for S
term1 = (2 * 1i * a) / (c * sqrt(b + c)) * …
((b + c) * ellipticE(asin(sqrt(beta)), beta^(-1)) – c * ellipticF(asin(sqrt(beta)), beta^(-1)));
term2 = (2 * a) / (c * sqrt(b – c) * sqrt(epsilon)) * …
(c / sqrt(mu) * ellipticE1(1 / beta) – c * sqrt(mu) * ellipticK(1 / beta));
term3 = sqrt(epsilon * (1 / beta)) * …
((b – a^2) * ellipticK(2 * mu) + (a^2 – b + c) * ellipticPi(2 * c / (c + b – a^2), 2 * mu));

% Sum all terms
S = term1 + term2 + term3;
end

% Elliptic integral functions using symbolic math toolbox
function val = ellipticK(m)
syms theta;
val = double(int(1 / sqrt(1 – m * sin(theta)^2), theta, 0, pi/2));
end

function val = ellipticF(phi, m)
syms theta;
val = double(int(1 / sqrt(1 – m * sin(theta)^2), theta, 0, phi));
end

function val = ellipticE(phi, m)
syms theta;
val = double(int(sqrt(1 – m * sin(theta)^2), theta, 0, phi));
end

function val = ellipticE1(m)
syms theta;
val = double(int(sqrt(1 – m * sin(theta)^2), theta, 0, pi/2));
end

function val = ellipticPi(n, m)
syms theta;
val = double(int(1 / (sqrt(1 – n * sin(theta)^2) * sqrt(1 – m * sin(theta)^2)), theta, 0, pi/2));
end appdesigner, app designer MATLAB Answers — New Questions

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