Note: Workaround is to remove .NET 9.0 from PC to resolve conflicts with 6.0.
This might be a .NET issue as a whole, but I only see it using Matlab, so I am posting here to help others out facing the same issues.
I have a .dll from one of the groups I work with for communicating to our devices. The .dll was built in .NET 6.0 (core) (x64). I have been able to use it in the past in Matlab, but have now run into issues since installing Visual Studio 2022. It was discovered that Matlab would reference the most recent installation of .NET (9.0 in my case) which was installed by VS 2022. When I set "core" as the environment in Matlab (dotnetenv("core")), I would then make the .NET assembly visible to Matlab using NET.addAssembly("insert path here"). When Matlab got to this step, it would buffer for about 10 seconds then crash immediately with no crash report. Getting help from my local IT, we pin pointed it to the .NET 9.0 install causing the problem.
To get around this, you can either uninstall 9.0 or set up an environment variable in your system properties called "DOTNET_ROOT" that can force a path to be referenced.
So I would like to ask if anyone else has faced this issue in Matlab? Is it an unexpected error that needs an error handle? I am naive to .net, and really only know the particular dll I interact with to do my methods, etc.Note: Workaround is to remove .NET 9.0 from PC to resolve conflicts with 6.0.
This might be a .NET issue as a whole, but I only see it using Matlab, so I am posting here to help others out facing the same issues.
I have a .dll from one of the groups I work with for communicating to our devices. The .dll was built in .NET 6.0 (core) (x64). I have been able to use it in the past in Matlab, but have now run into issues since installing Visual Studio 2022. It was discovered that Matlab would reference the most recent installation of .NET (9.0 in my case) which was installed by VS 2022. When I set "core" as the environment in Matlab (dotnetenv("core")), I would then make the .NET assembly visible to Matlab using NET.addAssembly("insert path here"). When Matlab got to this step, it would buffer for about 10 seconds then crash immediately with no crash report. Getting help from my local IT, we pin pointed it to the .NET 9.0 install causing the problem.
To get around this, you can either uninstall 9.0 or set up an environment variable in your system properties called "DOTNET_ROOT" that can force a path to be referenced.
So I would like to ask if anyone else has faced this issue in Matlab? Is it an unexpected error that needs an error handle? I am naive to .net, and really only know the particular dll I interact with to do my methods, etc. Note: Workaround is to remove .NET 9.0 from PC to resolve conflicts with 6.0.
This might be a .NET issue as a whole, but I only see it using Matlab, so I am posting here to help others out facing the same issues.
I have a .dll from one of the groups I work with for communicating to our devices. The .dll was built in .NET 6.0 (core) (x64). I have been able to use it in the past in Matlab, but have now run into issues since installing Visual Studio 2022. It was discovered that Matlab would reference the most recent installation of .NET (9.0 in my case) which was installed by VS 2022. When I set "core" as the environment in Matlab (dotnetenv("core")), I would then make the .NET assembly visible to Matlab using NET.addAssembly("insert path here"). When Matlab got to this step, it would buffer for about 10 seconds then crash immediately with no crash report. Getting help from my local IT, we pin pointed it to the .NET 9.0 install causing the problem.
To get around this, you can either uninstall 9.0 or set up an environment variable in your system properties called "DOTNET_ROOT" that can force a path to be referenced.
So I would like to ask if anyone else has faced this issue in Matlab? Is it an unexpected error that needs an error handle? I am naive to .net, and really only know the particular dll I interact with to do my methods, etc. .net MATLAB Answers — New Questions

​

Hello everyone! Can I have some files about VPP Virtual Power Plants research for reference during my studies? Please help me.Hello everyone! Can I have some files about VPP Virtual Power Plants research for reference during my studies? Please help me. Hello everyone! Can I have some files about VPP Virtual Power Plants research for reference during my studies? Please help me. vpp, model MATLAB Answers — New Questions

​

I defined equality and inequality constraints and for binary variables I used IntCon, But then ga gives error that equality constraints cannot used with integer. But I need equality and inequality constraints with binary variables to get satisfy result.
If anyone know, how to used both constraints with binary variables and integer please tell me.I defined equality and inequality constraints and for binary variables I used IntCon, But then ga gives error that equality constraints cannot used with integer. But I need equality and inequality constraints with binary variables to get satisfy result.
If anyone know, how to used both constraints with binary variables and integer please tell me. I defined equality and inequality constraints and for binary variables I used IntCon, But then ga gives error that equality constraints cannot used with integer. But I need equality and inequality constraints with binary variables to get satisfy result.
If anyone know, how to used both constraints with binary variables and integer please tell me. binary variables with equality constraints, integer variables with equality constraints MATLAB Answers — New Questions

​

I am making a program to acheive delay and sum beamforming,
I looked for examples of this online and found one relatable. The code is given below. When i run the program i get this error
%% Examples on delay-and-sum response for different arrays and input signals

%% 1D-array case

% Create vectors of x- and y-coordinates of microphone positions
xPos = -0.8:0.2:0.8; % 1xP vector of x-positions [m]
yPos = zeros(1, numel(xPos)); % 1xP vector of y-positions [m]
zPos = zeros(1, numel(xPos));
elementWeights = ones(1, numel(xPos))/numel(xPos); % 1xP vector of weightings

% Define arriving angles and frequency of input signals
thetaArrivalAngles = [-30 10]; % degrees
phiArrivalAngles = [0 0]; % degrees
f = 800; % [Hz]
c = 340; % [m/s]
fs = 44.1e3; % [Hz]

% Define array scanning angles (1D, so phi = 0)
thetaScanAngles = -90:0.1:90; % degrees
phiScanAngles = 0; % degrees

% Create input signal
inputSignal = createSignal(xPos, yPos, zPos, f, c, fs, thetaArrivalAngles, phiArrivalAngles);

% Create steering vector/matrix
e = steeringVector(xPos, yPos, zPos, f, c, thetaScanAngles, phiScanAngles);

% Create cross spectral matrix
R = crossSpectralMatrix(inputSignal);

% Calculate delay-and-sum steered response
S = steeredResponseDelayAndSum(R, e, elementWeights);

%Normalise spectrum
spectrumNormalized = abs(S)/max(abs(S));

%Convert to decibel
spectrumLog = 10*log10(spectrumNormalized);

%Plot array
fig1 = figure;
fig1.Color = ‘w’;
ax = axes(‘Parent’, fig1);
scatter(ax, xPos, yPos, 20, ‘filled’)
axis(ax, ‘square’)
ax.XLim = [-1 1];
ax.YLim = [-1 1];
grid(ax, ‘on’)
title(ax, ‘Microphone positions’)

%Plot steered response with indicator lines
fig2 = figure;
fig2.Color = ‘w’;
ax = axes(‘Parent’, fig2);
plot(ax, thetaScanAngles, spectrumLog)
grid(ax, ‘on’)
ax.XLim = [thetaScanAngles(1) thetaScanAngles(end)];

for j=1:numel(thetaArrivalAngles)
indx = find(thetaScanAngles >= thetaArrivalAngles(j), 1);
line(ax, [thetaScanAngles(indx) thetaScanAngles(indx)], ax.YLim,’LineWidth’, 1, ‘Color’, ‘r’, ‘LineStyle’, ‘–‘);
end
xlabel(ax, ‘theta’)
ylabel(ax, ‘dB’)I am making a program to acheive delay and sum beamforming,
I looked for examples of this online and found one relatable. The code is given below. When i run the program i get this error
%% Examples on delay-and-sum response for different arrays and input signals

%% 1D-array case

% Create vectors of x- and y-coordinates of microphone positions
xPos = -0.8:0.2:0.8; % 1xP vector of x-positions [m]
yPos = zeros(1, numel(xPos)); % 1xP vector of y-positions [m]
zPos = zeros(1, numel(xPos));
elementWeights = ones(1, numel(xPos))/numel(xPos); % 1xP vector of weightings

% Define arriving angles and frequency of input signals
thetaArrivalAngles = [-30 10]; % degrees
phiArrivalAngles = [0 0]; % degrees
f = 800; % [Hz]
c = 340; % [m/s]
fs = 44.1e3; % [Hz]

% Define array scanning angles (1D, so phi = 0)
thetaScanAngles = -90:0.1:90; % degrees
phiScanAngles = 0; % degrees

% Create input signal
inputSignal = createSignal(xPos, yPos, zPos, f, c, fs, thetaArrivalAngles, phiArrivalAngles);

% Create steering vector/matrix
e = steeringVector(xPos, yPos, zPos, f, c, thetaScanAngles, phiScanAngles);

% Create cross spectral matrix
R = crossSpectralMatrix(inputSignal);

% Calculate delay-and-sum steered response
S = steeredResponseDelayAndSum(R, e, elementWeights);

%Normalise spectrum
spectrumNormalized = abs(S)/max(abs(S));

%Convert to decibel
spectrumLog = 10*log10(spectrumNormalized);

%Plot array
fig1 = figure;
fig1.Color = ‘w’;
ax = axes(‘Parent’, fig1);
scatter(ax, xPos, yPos, 20, ‘filled’)
axis(ax, ‘square’)
ax.XLim = [-1 1];
ax.YLim = [-1 1];
grid(ax, ‘on’)
title(ax, ‘Microphone positions’)

%Plot steered response with indicator lines
fig2 = figure;
fig2.Color = ‘w’;
ax = axes(‘Parent’, fig2);
plot(ax, thetaScanAngles, spectrumLog)
grid(ax, ‘on’)
ax.XLim = [thetaScanAngles(1) thetaScanAngles(end)];

for j=1:numel(thetaArrivalAngles)
indx = find(thetaScanAngles >= thetaArrivalAngles(j), 1);
line(ax, [thetaScanAngles(indx) thetaScanAngles(indx)], ax.YLim,’LineWidth’, 1, ‘Color’, ‘r’, ‘LineStyle’, ‘–‘);
end
xlabel(ax, ‘theta’)
ylabel(ax, ‘dB’) I am making a program to acheive delay and sum beamforming,
I looked for examples of this online and found one relatable. The code is given below. When i run the program i get this error
%% Examples on delay-and-sum response for different arrays and input signals

%% 1D-array case

% Create vectors of x- and y-coordinates of microphone positions
xPos = -0.8:0.2:0.8; % 1xP vector of x-positions [m]
yPos = zeros(1, numel(xPos)); % 1xP vector of y-positions [m]
zPos = zeros(1, numel(xPos));
elementWeights = ones(1, numel(xPos))/numel(xPos); % 1xP vector of weightings

% Define arriving angles and frequency of input signals
thetaArrivalAngles = [-30 10]; % degrees
phiArrivalAngles = [0 0]; % degrees
f = 800; % [Hz]
c = 340; % [m/s]
fs = 44.1e3; % [Hz]

% Define array scanning angles (1D, so phi = 0)
thetaScanAngles = -90:0.1:90; % degrees
phiScanAngles = 0; % degrees

% Create input signal
inputSignal = createSignal(xPos, yPos, zPos, f, c, fs, thetaArrivalAngles, phiArrivalAngles);

% Create steering vector/matrix
e = steeringVector(xPos, yPos, zPos, f, c, thetaScanAngles, phiScanAngles);

% Create cross spectral matrix
R = crossSpectralMatrix(inputSignal);

% Calculate delay-and-sum steered response
S = steeredResponseDelayAndSum(R, e, elementWeights);

%Normalise spectrum
spectrumNormalized = abs(S)/max(abs(S));

%Convert to decibel
spectrumLog = 10*log10(spectrumNormalized);

%Plot array
fig1 = figure;
fig1.Color = ‘w’;
ax = axes(‘Parent’, fig1);
scatter(ax, xPos, yPos, 20, ‘filled’)
axis(ax, ‘square’)
ax.XLim = [-1 1];
ax.YLim = [-1 1];
grid(ax, ‘on’)
title(ax, ‘Microphone positions’)

%Plot steered response with indicator lines
fig2 = figure;
fig2.Color = ‘w’;
ax = axes(‘Parent’, fig2);
plot(ax, thetaScanAngles, spectrumLog)
grid(ax, ‘on’)
ax.XLim = [thetaScanAngles(1) thetaScanAngles(end)];

for j=1:numel(thetaArrivalAngles)
indx = find(thetaScanAngles >= thetaArrivalAngles(j), 1);
line(ax, [thetaScanAngles(indx) thetaScanAngles(indx)], ax.YLim,’LineWidth’, 1, ‘Color’, ‘r’, ‘LineStyle’, ‘–‘);
end
xlabel(ax, ‘theta’)
ylabel(ax, ‘dB’) digital signal processing MATLAB Answers — New Questions

​

My problem is that my reward function is well defined to be expected in a range of -80 to 80. Running through a lot of times of my environment step function and the step reward is working fine. Below is the sample graph of reward against each step when the action inputted for each step is fully randomised.

However, whenever I train it with my PPO agent, the episode reward will be absurbly high, as shown in the table below.

It’s an absurb episode reward value for a 45 steps per episode training. That just means every step reward is 187717.36/45 = 4171.5 average, which is impossible to happen.

Another problem is I can’t terminate the training by using the ‘stop training’ in the reinforcement learning training monitor. I can stop the training by pausing the matlab and the window will show that the training is stopped. However, the environment is still running for no reason despite the window said that it has stopped. My environment do keep popping cmd window for each step because it links to the external software and I used task kill to close the cmd. Not sure this is the cause. Spend days and still don’t know what caused it.

Any help is appreciated.My problem is that my reward function is well defined to be expected in a range of -80 to 80. Running through a lot of times of my environment step function and the step reward is working fine. Below is the sample graph of reward against each step when the action inputted for each step is fully randomised.

However, whenever I train it with my PPO agent, the episode reward will be absurbly high, as shown in the table below.

It’s an absurb episode reward value for a 45 steps per episode training. That just means every step reward is 187717.36/45 = 4171.5 average, which is impossible to happen.

Another problem is I can’t terminate the training by using the ‘stop training’ in the reinforcement learning training monitor. I can stop the training by pausing the matlab and the window will show that the training is stopped. However, the environment is still running for no reason despite the window said that it has stopped. My environment do keep popping cmd window for each step because it links to the external software and I used task kill to close the cmd. Not sure this is the cause. Spend days and still don’t know what caused it.

Any help is appreciated. My problem is that my reward function is well defined to be expected in a range of -80 to 80. Running through a lot of times of my environment step function and the step reward is working fine. Below is the sample graph of reward against each step when the action inputted for each step is fully randomised.

However, whenever I train it with my PPO agent, the episode reward will be absurbly high, as shown in the table below.

It’s an absurb episode reward value for a 45 steps per episode training. That just means every step reward is 187717.36/45 = 4171.5 average, which is impossible to happen.

Another problem is I can’t terminate the training by using the ‘stop training’ in the reinforcement learning training monitor. I can stop the training by pausing the matlab and the window will show that the training is stopped. However, the environment is still running for no reason despite the window said that it has stopped. My environment do keep popping cmd window for each step because it links to the external software and I used task kill to close the cmd. Not sure this is the cause. Spend days and still don’t know what caused it.

Any help is appreciated. reinforcement learning, machine learning, reinforcement learning toolbox, ppoagent MATLAB Answers — New Questions

​

I am using the Matlab codegen command quite often to decrease the runtime of my Matlab functions and compile them as mex. However, when working on my algorithm, I often need to recompile my functions in between my tests and validations. This takes up to 5min for complex functions which decreases my productivity.
Does anyone have experience using a compiler cache such as ccache (I am using Ubuntu 18.04) together with Matlab (R2021a)? I did a first attempt to implement this, but the compilation time did not really decrease, despite that ccache is used.
Workflow so far:
Install ccache (Ubuntu 18.04): sudo apt install ccache
use ccache for all compilers: sudo /usr/sbin/update-ccache-symlinks
call Matlab with ccache path: PATH="/usr/lib/ccache/:$PATH" matlab
check path in Matlab: !echo $PATH gives /usr/lib/ccache/:/home/username/bin:….
compile a function using the Matlab codegen command (with wrapper matlabfcn2mex)
That ccache is used can be seen in the buildLog.log file (in fcndir/codegen/mex/fcnname/build/glnxa64). Alle lines begin with /usr/lib/ccache/gcc instead of /usr/bin/gcc as before. The ccache statistics (ccache -s) gives increased values for "cache hit (direct)" and "cache hit (preprocessed)" after each call of codegen in Matlab. For my example file (6 DoF serial robot inverse kinematics using Newton Raphson) I still need around 120s, despite the file is not changed and should be fully in the cache. Without the cache the time is around the same. I would expect a drastic decrease of compilation time, as can be seen when using ccache+cmake e.g. in building a ROS workspace.
Any ideas or comments?I am using the Matlab codegen command quite often to decrease the runtime of my Matlab functions and compile them as mex. However, when working on my algorithm, I often need to recompile my functions in between my tests and validations. This takes up to 5min for complex functions which decreases my productivity.
Does anyone have experience using a compiler cache such as ccache (I am using Ubuntu 18.04) together with Matlab (R2021a)? I did a first attempt to implement this, but the compilation time did not really decrease, despite that ccache is used.
Workflow so far:
Install ccache (Ubuntu 18.04): sudo apt install ccache
use ccache for all compilers: sudo /usr/sbin/update-ccache-symlinks
call Matlab with ccache path: PATH="/usr/lib/ccache/:$PATH" matlab
check path in Matlab: !echo $PATH gives /usr/lib/ccache/:/home/username/bin:….
compile a function using the Matlab codegen command (with wrapper matlabfcn2mex)
That ccache is used can be seen in the buildLog.log file (in fcndir/codegen/mex/fcnname/build/glnxa64). Alle lines begin with /usr/lib/ccache/gcc instead of /usr/bin/gcc as before. The ccache statistics (ccache -s) gives increased values for "cache hit (direct)" and "cache hit (preprocessed)" after each call of codegen in Matlab. For my example file (6 DoF serial robot inverse kinematics using Newton Raphson) I still need around 120s, despite the file is not changed and should be fully in the cache. Without the cache the time is around the same. I would expect a drastic decrease of compilation time, as can be seen when using ccache+cmake e.g. in building a ROS workspace.
Any ideas or comments? I am using the Matlab codegen command quite often to decrease the runtime of my Matlab functions and compile them as mex. However, when working on my algorithm, I often need to recompile my functions in between my tests and validations. This takes up to 5min for complex functions which decreases my productivity.
Does anyone have experience using a compiler cache such as ccache (I am using Ubuntu 18.04) together with Matlab (R2021a)? I did a first attempt to implement this, but the compilation time did not really decrease, despite that ccache is used.
Workflow so far:
Install ccache (Ubuntu 18.04): sudo apt install ccache
use ccache for all compilers: sudo /usr/sbin/update-ccache-symlinks
call Matlab with ccache path: PATH="/usr/lib/ccache/:$PATH" matlab
check path in Matlab: !echo $PATH gives /usr/lib/ccache/:/home/username/bin:….
compile a function using the Matlab codegen command (with wrapper matlabfcn2mex)
That ccache is used can be seen in the buildLog.log file (in fcndir/codegen/mex/fcnname/build/glnxa64). Alle lines begin with /usr/lib/ccache/gcc instead of /usr/bin/gcc as before. The ccache statistics (ccache -s) gives increased values for "cache hit (direct)" and "cache hit (preprocessed)" after each call of codegen in Matlab. For my example file (6 DoF serial robot inverse kinematics using Newton Raphson) I still need around 120s, despite the file is not changed and should be fully in the cache. Without the cache the time is around the same. I would expect a drastic decrease of compilation time, as can be seen when using ccache+cmake e.g. in building a ROS workspace.
Any ideas or comments? matlab, mex, mex compiler, codegen, ccache, linux MATLAB Answers — New Questions

​

Good day everyone,
I want to simulate LNG to gas system (liquid phase to gas phase). Currently, I am using Thermal Liquid library (I am considering Two-phase library as well) to show liquid phase of LNG but I am not able to vaporise liquid into gas phase.

(LNG liquid phase part in simulation)
(In next step, I need to simulate LNG tank where high pressure LNG and partial natural gas stored in the same tank. I am thinking to use Tank (G-TL) block)
In liquid-to-gas part, I need to heat liquid LNG with a heat source (heating water) to increase temperature of LNG forcing to evaporate. After this step, LNG will be transformed into gas form. And I would like to clearly show in which phase LNG is (gas phase to be shown with gas library).

(Brief configuration of Liquid to Gas LNG transformation. TL(or 2P) library to Gas library)
Can you please guide me in liquid to gas phase LNG simulation?

Thanks in advance.Good day everyone,
I want to simulate LNG to gas system (liquid phase to gas phase). Currently, I am using Thermal Liquid library (I am considering Two-phase library as well) to show liquid phase of LNG but I am not able to vaporise liquid into gas phase.

(LNG liquid phase part in simulation)
(In next step, I need to simulate LNG tank where high pressure LNG and partial natural gas stored in the same tank. I am thinking to use Tank (G-TL) block)
In liquid-to-gas part, I need to heat liquid LNG with a heat source (heating water) to increase temperature of LNG forcing to evaporate. After this step, LNG will be transformed into gas form. And I would like to clearly show in which phase LNG is (gas phase to be shown with gas library).

(Brief configuration of Liquid to Gas LNG transformation. TL(or 2P) library to Gas library)
Can you please guide me in liquid to gas phase LNG simulation?

Thanks in advance. Good day everyone,
I want to simulate LNG to gas system (liquid phase to gas phase). Currently, I am using Thermal Liquid library (I am considering Two-phase library as well) to show liquid phase of LNG but I am not able to vaporise liquid into gas phase.

(LNG liquid phase part in simulation)
(In next step, I need to simulate LNG tank where high pressure LNG and partial natural gas stored in the same tank. I am thinking to use Tank (G-TL) block)
In liquid-to-gas part, I need to heat liquid LNG with a heat source (heating water) to increase temperature of LNG forcing to evaporate. After this step, LNG will be transformed into gas form. And I would like to clearly show in which phase LNG is (gas phase to be shown with gas library).

(Brief configuration of Liquid to Gas LNG transformation. TL(or 2P) library to Gas library)
Can you please guide me in liquid to gas phase LNG simulation?

Thanks in advance. lng, natural gas, gas, simulink, simscape MATLAB Answers — New Questions

​

Hi everyone,
For an assignment I have to solve a system of ODE’s given the matrix DE using the Adams-Bashforth method and compare my numerical approximation to the exact one. To find the exact solution, I want to use dsolve, but every I run my code I get the error message ‘Unexpected MATLAB expression’ and then ‘Parse Error at Y_2(t): Usage might be invalid MATLAB syntax’. I am using MATLABR2017.

Does anyone know what the issue is?

function Y_exact = exact_soln(time)
%Actual solution to the system:
A = [-20, 10, 0, 0;…
10, -20, 10, 0;…
0, 10, -20, 10;…
0, 0, 10, -20];
y_0 = ones(4,1);

syms = Y_1(x) Y_2(x) Y_3(x) Y_4(x)
Y = [Y_1; Y_2; Y_3; Y_4];
odes = diff(Y) == A*Y;

[Y_1Sol(x), Y_2Sol(x), Y_3Sol(x), Y_4Sol(x)] = dsolve(odes,y_0);

Y_exact = [double(Y_1Sol(time));…
double(Y_2Sol(time));…
double(Y_3Sol(time));…
double(Y_4Sol(time))];
endHi everyone,
For an assignment I have to solve a system of ODE’s given the matrix DE using the Adams-Bashforth method and compare my numerical approximation to the exact one. To find the exact solution, I want to use dsolve, but every I run my code I get the error message ‘Unexpected MATLAB expression’ and then ‘Parse Error at Y_2(t): Usage might be invalid MATLAB syntax’. I am using MATLABR2017.

Does anyone know what the issue is?

function Y_exact = exact_soln(time)
%Actual solution to the system:
A = [-20, 10, 0, 0;…
10, -20, 10, 0;…
0, 10, -20, 10;…
0, 0, 10, -20];
y_0 = ones(4,1);

syms = Y_1(x) Y_2(x) Y_3(x) Y_4(x)
Y = [Y_1; Y_2; Y_3; Y_4];
odes = diff(Y) == A*Y;

[Y_1Sol(x), Y_2Sol(x), Y_3Sol(x), Y_4Sol(x)] = dsolve(odes,y_0);

Y_exact = [double(Y_1Sol(time));…
double(Y_2Sol(time));…
double(Y_3Sol(time));…
double(Y_4Sol(time))];
end Hi everyone,
For an assignment I have to solve a system of ODE’s given the matrix DE using the Adams-Bashforth method and compare my numerical approximation to the exact one. To find the exact solution, I want to use dsolve, but every I run my code I get the error message ‘Unexpected MATLAB expression’ and then ‘Parse Error at Y_2(t): Usage might be invalid MATLAB syntax’. I am using MATLABR2017.

Does anyone know what the issue is?

function Y_exact = exact_soln(time)
%Actual solution to the system:
A = [-20, 10, 0, 0;…
10, -20, 10, 0;…
0, 10, -20, 10;…
0, 0, 10, -20];
y_0 = ones(4,1);

syms = Y_1(x) Y_2(x) Y_3(x) Y_4(x)
Y = [Y_1; Y_2; Y_3; Y_4];
odes = diff(Y) == A*Y;

[Y_1Sol(x), Y_2Sol(x), Y_3Sol(x), Y_4Sol(x)] = dsolve(odes,y_0);

Y_exact = [double(Y_1Sol(time));…
double(Y_2Sol(time));…
double(Y_3Sol(time));…
double(Y_4Sol(time))];
end dsolve, syms, parse error, invalid matlab syntax, unexpected matlab syntax, diff, odes MATLAB Answers — New Questions

​

I have two codes. Each code has four graphs. I want to plot two graphs in one figure. For example: Dead nodes vs Round graph of two should be in one figure. In the same way other graphs also. I tried hold on function but still not getting. How to merge the two codes in order to get the graphs ?I have two codes. Each code has four graphs. I want to plot two graphs in one figure. For example: Dead nodes vs Round graph of two should be in one figure. In the same way other graphs also. I tried hold on function but still not getting. How to merge the two codes in order to get the graphs ? I have two codes. Each code has four graphs. I want to plot two graphs in one figure. For example: Dead nodes vs Round graph of two should be in one figure. In the same way other graphs also. I tried hold on function but still not getting. How to merge the two codes in order to get the graphs ? subplot, tiledlayout, figure, multiple, axes MATLAB Answers — New Questions

​

Hello,
I build a model using model referencing.Then i generated the code using Embedded Coder.
As there were two models -parent and child model.So two different files c files are created in two different file structures(as there are two different model)
Is there anyway i can generate code for both model (parent and chid) in same folder?Hello,
I build a model using model referencing.Then i generated the code using Embedded Coder.
As there were two models -parent and child model.So two different files c files are created in two different file structures(as there are two different model)
Is there anyway i can generate code for both model (parent and chid) in same folder? Hello,
I build a model using model referencing.Then i generated the code using Embedded Coder.
As there were two models -parent and child model.So two different files c files are created in two different file structures(as there are two different model)
Is there anyway i can generate code for both model (parent and chid) in same folder? embedded coder, simulink, matlab, model, modelreference MATLAB Answers — New Questions

​