Mathworks has recklessly put a drawnow inside of its asynciolib for hardware read and writes:
toolboxsharedasynciolib+matlabshared+asyncio+internalStream.m Line 184: drawnow(‘limitrate’);
This will then execute callbacks in the middle of data transfer! I could remove those lines of code for every Matlab install, but if an update restores the code then I have a dangerous bug. Is there a way I can temporarily pause the event queue from executing callbacks?

The following function CallbackTest has a 10 second main loop which should not be interrupted with the press of a button. However if TCPIP commands are executed in the loop then a hidden drawnow is invoked and the button callback will be processed.

function CallbackTest(Do_TCPIP)
% Test to see if TCPIP reads evaluate callbacks.
% There is a 10s main loop which the button callback should not interrupt.
% The main loop will not be interrupted when Do_TCPIP is 0.
% However when Do_TCPIP is 1 then it will be interrupted.

%Initialize figure and button
hFigure=uifigure();
uibutton(hFigure,ButtonPushedFcn=@ACallBack);

%Initialize TCPIP
echotcpip("on",4000);
t = tcpclient("localhost",4000);
configureTerminator(t,"CR");

waitfor(hFigure,’FigureViewReady’)

%10 second main loop which should not be interrupted because there is no drawnow, figure, pause, or waitfor command
n=0;
while n < 20

if Do_TCPIP
writeline(t,"loop");
readline(t);
end

n=n+1;
java.lang.Thread.sleep(500);

end

% Wrap up
echotcpip("off");
delete(hFigure)
fprintf(‘Done!n’);

end

function ACallBack(~,~)
fprintf(‘Main loop interrupted.n’);
endMathworks has recklessly put a drawnow inside of its asynciolib for hardware read and writes:
toolboxsharedasynciolib+matlabshared+asyncio+internalStream.m Line 184: drawnow(‘limitrate’);
This will then execute callbacks in the middle of data transfer! I could remove those lines of code for every Matlab install, but if an update restores the code then I have a dangerous bug. Is there a way I can temporarily pause the event queue from executing callbacks?

The following function CallbackTest has a 10 second main loop which should not be interrupted with the press of a button. However if TCPIP commands are executed in the loop then a hidden drawnow is invoked and the button callback will be processed.

function CallbackTest(Do_TCPIP)
% Test to see if TCPIP reads evaluate callbacks.
% There is a 10s main loop which the button callback should not interrupt.
% The main loop will not be interrupted when Do_TCPIP is 0.
% However when Do_TCPIP is 1 then it will be interrupted.

%Initialize figure and button
hFigure=uifigure();
uibutton(hFigure,ButtonPushedFcn=@ACallBack);

%Initialize TCPIP
echotcpip("on",4000);
t = tcpclient("localhost",4000);
configureTerminator(t,"CR");

waitfor(hFigure,’FigureViewReady’)

%10 second main loop which should not be interrupted because there is no drawnow, figure, pause, or waitfor command
n=0;
while n < 20

if Do_TCPIP
writeline(t,"loop");
readline(t);
end

n=n+1;
java.lang.Thread.sleep(500);

end

% Wrap up
echotcpip("off");
delete(hFigure)
fprintf(‘Done!n’);

end

function ACallBack(~,~)
fprintf(‘Main loop interrupted.n’);
end Mathworks has recklessly put a drawnow inside of its asynciolib for hardware read and writes:
toolboxsharedasynciolib+matlabshared+asyncio+internalStream.m Line 184: drawnow(‘limitrate’);
This will then execute callbacks in the middle of data transfer! I could remove those lines of code for every Matlab install, but if an update restores the code then I have a dangerous bug. Is there a way I can temporarily pause the event queue from executing callbacks?

The following function CallbackTest has a 10 second main loop which should not be interrupted with the press of a button. However if TCPIP commands are executed in the loop then a hidden drawnow is invoked and the button callback will be processed.

function CallbackTest(Do_TCPIP)
% Test to see if TCPIP reads evaluate callbacks.
% There is a 10s main loop which the button callback should not interrupt.
% The main loop will not be interrupted when Do_TCPIP is 0.
% However when Do_TCPIP is 1 then it will be interrupted.

%Initialize figure and button
hFigure=uifigure();
uibutton(hFigure,ButtonPushedFcn=@ACallBack);

%Initialize TCPIP
echotcpip("on",4000);
t = tcpclient("localhost",4000);
configureTerminator(t,"CR");

waitfor(hFigure,’FigureViewReady’)

%10 second main loop which should not be interrupted because there is no drawnow, figure, pause, or waitfor command
n=0;
while n < 20

if Do_TCPIP
writeline(t,"loop");
readline(t);
end

n=n+1;
java.lang.Thread.sleep(500);

end

% Wrap up
echotcpip("off");
delete(hFigure)
fprintf(‘Done!n’);

end

function ACallBack(~,~)
fprintf(‘Main loop interrupted.n’);
end drawnow, tcpip, hardware, callbacks MATLAB Answers — New Questions

​

o2 = [0, 0, 0]; % Origin
ain = [26,0,0]; % Initial vector
input_axis = [0,1,0]; % Axis of rotation (z-axis)
theta1 = deg2rad(157.5); % Angle of rotation in radians

% Rotation matrix function
rot_matrix = @(axis, theta) cos(theta) * eye(3) + …
sin(theta) * [0, -axis(3), axis(2); axis(3), 0, -axis(1); -axis(2), axis(1), 0] + …
(1 – cos(theta)) * (axis’ * axis);

% Compute the rotated vector
a_rotated = rot_matrix(input_axis, theta1) * (ain’ – o2′) + o2′;

% Transpose to row vector for display
a_rotated = a_rotated’;
a_final=a_rotated;

bin=[29.5,46,0];
o4=[13.5,46,0];
output_axis=[0,1,0];
theta2= deg2rad(105);
b1_rotated = rot_matrix(output_axis, theta2) * (bin’ – o4′) + o4′;
b1_final=b1_rotated’;
u3=[0,0,1];
c1=[125,0,0];

% Compute the rotated vector in terms of phi
syms phi;
rot_matrix_phi = rot_matrix(u3, phi);
c1_afinal_rotated = rot_matrix_phi * (c1 – a_final)’+a_final’ ;
c1_afinal_rotated = c1_afinal_rotated’; % Transpose to row vector for display

o4o2=o4-o2;

%disp(o4o2);
coupler=(c1_afinal_rotated-b1_final);

% Define the initial rotated components of the coupler
syms phi;
coupler = subs(coupler, conj(phi), phi);
%disp(‘Coupler vector without conjugate:’);
disp(coupler);

% Parametric substitution
syms t;
cos_phi = (1 – t^2) / (1 + t^2);
sin_phi = 2 * t / (1 + t^2);

% Substitute parametric forms into coupler components
coupler_parametric = subs(coupler, [cos(phi), sin(phi)], [cos_phi, sin_phi]);

% Display the parametric coupler
disp(‘Parametric form of coupler:’);
disp(coupler_parametric);

syms targetvalue % it might be 3.5 …
normsq = expand(sum(coupler_parametric.^2) – targetvalue^2);

normpoly = simplify(normsq*(t^2+1)^2);
vpa(expand(normpoly),4);
tsolve = solve(normpoly,t,’maxdegree’,4,’returnconditions’,true);
h=vpa(subs(tsolve.t,targetvalue, 106));
%disp(h);
real_solutions = h(imag(h) == 0);
disp(‘Real roots:’);
disp(real_solutions);

% Convert real values of t to angles using angle = 2 * atan(t)
angles_rad = 2 * atan(real_solutions);
angles_deg = rad2deg(angles_rad);

% Display angles in degrees
disp(‘Angles in degrees before adjustment:’);
disp(angles_deg);

phi=double(angles_rad(1));
p=double(angles_deg(1));

c1_position = double(rot_matrix(u3, phi) * (c1′ – a_final’) + a_final’);

p=(c1_position’-a_final)’;
disp(p’);
disp(p(2)/norm(c1_position’-a_final));
final_angle_phi=acosd(p(2)/norm(c1_position’-a_final)); % angle with y axis
disp(final_angle_phi) ;
disp(norm(c1_position’-b1_final));
disp(norm(a_rotated-o2));

%% in this code i want to change theta1 at rate of 90deg/sec and theta2 at rate of 60 deg/sec varying from 0 to 360 deg and want to calculate corresponding value of final_angle_phi with the y axis
%please help someoneo2 = [0, 0, 0]; % Origin
ain = [26,0,0]; % Initial vector
input_axis = [0,1,0]; % Axis of rotation (z-axis)
theta1 = deg2rad(157.5); % Angle of rotation in radians

% Rotation matrix function
rot_matrix = @(axis, theta) cos(theta) * eye(3) + …
sin(theta) * [0, -axis(3), axis(2); axis(3), 0, -axis(1); -axis(2), axis(1), 0] + …
(1 – cos(theta)) * (axis’ * axis);

% Compute the rotated vector
a_rotated = rot_matrix(input_axis, theta1) * (ain’ – o2′) + o2′;

% Transpose to row vector for display
a_rotated = a_rotated’;
a_final=a_rotated;

bin=[29.5,46,0];
o4=[13.5,46,0];
output_axis=[0,1,0];
theta2= deg2rad(105);
b1_rotated = rot_matrix(output_axis, theta2) * (bin’ – o4′) + o4′;
b1_final=b1_rotated’;
u3=[0,0,1];
c1=[125,0,0];

% Compute the rotated vector in terms of phi
syms phi;
rot_matrix_phi = rot_matrix(u3, phi);
c1_afinal_rotated = rot_matrix_phi * (c1 – a_final)’+a_final’ ;
c1_afinal_rotated = c1_afinal_rotated’; % Transpose to row vector for display

o4o2=o4-o2;

%disp(o4o2);
coupler=(c1_afinal_rotated-b1_final);

% Define the initial rotated components of the coupler
syms phi;
coupler = subs(coupler, conj(phi), phi);
%disp(‘Coupler vector without conjugate:’);
disp(coupler);

% Parametric substitution
syms t;
cos_phi = (1 – t^2) / (1 + t^2);
sin_phi = 2 * t / (1 + t^2);

% Substitute parametric forms into coupler components
coupler_parametric = subs(coupler, [cos(phi), sin(phi)], [cos_phi, sin_phi]);

% Display the parametric coupler
disp(‘Parametric form of coupler:’);
disp(coupler_parametric);

syms targetvalue % it might be 3.5 …
normsq = expand(sum(coupler_parametric.^2) – targetvalue^2);

normpoly = simplify(normsq*(t^2+1)^2);
vpa(expand(normpoly),4);
tsolve = solve(normpoly,t,’maxdegree’,4,’returnconditions’,true);
h=vpa(subs(tsolve.t,targetvalue, 106));
%disp(h);
real_solutions = h(imag(h) == 0);
disp(‘Real roots:’);
disp(real_solutions);

% Convert real values of t to angles using angle = 2 * atan(t)
angles_rad = 2 * atan(real_solutions);
angles_deg = rad2deg(angles_rad);

% Display angles in degrees
disp(‘Angles in degrees before adjustment:’);
disp(angles_deg);

phi=double(angles_rad(1));
p=double(angles_deg(1));

c1_position = double(rot_matrix(u3, phi) * (c1′ – a_final’) + a_final’);

p=(c1_position’-a_final)’;
disp(p’);
disp(p(2)/norm(c1_position’-a_final));
final_angle_phi=acosd(p(2)/norm(c1_position’-a_final)); % angle with y axis
disp(final_angle_phi) ;
disp(norm(c1_position’-b1_final));
disp(norm(a_rotated-o2));

%% in this code i want to change theta1 at rate of 90deg/sec and theta2 at rate of 60 deg/sec varying from 0 to 360 deg and want to calculate corresponding value of final_angle_phi with the y axis
%please help someone o2 = [0, 0, 0]; % Origin
ain = [26,0,0]; % Initial vector
input_axis = [0,1,0]; % Axis of rotation (z-axis)
theta1 = deg2rad(157.5); % Angle of rotation in radians

% Rotation matrix function
rot_matrix = @(axis, theta) cos(theta) * eye(3) + …
sin(theta) * [0, -axis(3), axis(2); axis(3), 0, -axis(1); -axis(2), axis(1), 0] + …
(1 – cos(theta)) * (axis’ * axis);

% Compute the rotated vector
a_rotated = rot_matrix(input_axis, theta1) * (ain’ – o2′) + o2′;

% Transpose to row vector for display
a_rotated = a_rotated’;
a_final=a_rotated;

bin=[29.5,46,0];
o4=[13.5,46,0];
output_axis=[0,1,0];
theta2= deg2rad(105);
b1_rotated = rot_matrix(output_axis, theta2) * (bin’ – o4′) + o4′;
b1_final=b1_rotated’;
u3=[0,0,1];
c1=[125,0,0];

% Compute the rotated vector in terms of phi
syms phi;
rot_matrix_phi = rot_matrix(u3, phi);
c1_afinal_rotated = rot_matrix_phi * (c1 – a_final)’+a_final’ ;
c1_afinal_rotated = c1_afinal_rotated’; % Transpose to row vector for display

o4o2=o4-o2;

%disp(o4o2);
coupler=(c1_afinal_rotated-b1_final);

% Define the initial rotated components of the coupler
syms phi;
coupler = subs(coupler, conj(phi), phi);
%disp(‘Coupler vector without conjugate:’);
disp(coupler);

% Parametric substitution
syms t;
cos_phi = (1 – t^2) / (1 + t^2);
sin_phi = 2 * t / (1 + t^2);

% Substitute parametric forms into coupler components
coupler_parametric = subs(coupler, [cos(phi), sin(phi)], [cos_phi, sin_phi]);

% Display the parametric coupler
disp(‘Parametric form of coupler:’);
disp(coupler_parametric);

syms targetvalue % it might be 3.5 …
normsq = expand(sum(coupler_parametric.^2) – targetvalue^2);

normpoly = simplify(normsq*(t^2+1)^2);
vpa(expand(normpoly),4);
tsolve = solve(normpoly,t,’maxdegree’,4,’returnconditions’,true);
h=vpa(subs(tsolve.t,targetvalue, 106));
%disp(h);
real_solutions = h(imag(h) == 0);
disp(‘Real roots:’);
disp(real_solutions);

% Convert real values of t to angles using angle = 2 * atan(t)
angles_rad = 2 * atan(real_solutions);
angles_deg = rad2deg(angles_rad);

% Display angles in degrees
disp(‘Angles in degrees before adjustment:’);
disp(angles_deg);

phi=double(angles_rad(1));
p=double(angles_deg(1));

c1_position = double(rot_matrix(u3, phi) * (c1′ – a_final’) + a_final’);

p=(c1_position’-a_final)’;
disp(p’);
disp(p(2)/norm(c1_position’-a_final));
final_angle_phi=acosd(p(2)/norm(c1_position’-a_final)); % angle with y axis
disp(final_angle_phi) ;
disp(norm(c1_position’-b1_final));
disp(norm(a_rotated-o2));

%% in this code i want to change theta1 at rate of 90deg/sec and theta2 at rate of 60 deg/sec varying from 0 to 360 deg and want to calculate corresponding value of final_angle_phi with the y axis
%please help someone #angles, #omega MATLAB Answers — New Questions

​

I have the attached data. Those are the testing results of fibre reinforced cement mortars. First column indicates lengths of fibre used and the second column indicates the volume ratios. Third coloumn I have porosity data. I analysed all the data statistically, but no combination found statistically significant (Based on P-vale, correlation coefficient and R-squared). Sometimes may be due to only three data points for each combination (For an instance at 6 mm length, how volume ratios affect porosity have three data points and etc.)So I would kindly would like to know wehther nay other machine learning or techniques are available to interpret these data interestingly and effectively to the scintific community? Becuase, as this, I have 4 more test paramters (not only porosity) and four fibre types as well.
THnak you in advance.I have the attached data. Those are the testing results of fibre reinforced cement mortars. First column indicates lengths of fibre used and the second column indicates the volume ratios. Third coloumn I have porosity data. I analysed all the data statistically, but no combination found statistically significant (Based on P-vale, correlation coefficient and R-squared). Sometimes may be due to only three data points for each combination (For an instance at 6 mm length, how volume ratios affect porosity have three data points and etc.)So I would kindly would like to know wehther nay other machine learning or techniques are available to interpret these data interestingly and effectively to the scintific community? Becuase, as this, I have 4 more test paramters (not only porosity) and four fibre types as well.
THnak you in advance. I have the attached data. Those are the testing results of fibre reinforced cement mortars. First column indicates lengths of fibre used and the second column indicates the volume ratios. Third coloumn I have porosity data. I analysed all the data statistically, but no combination found statistically significant (Based on P-vale, correlation coefficient and R-squared). Sometimes may be due to only three data points for each combination (For an instance at 6 mm length, how volume ratios affect porosity have three data points and etc.)So I would kindly would like to know wehther nay other machine learning or techniques are available to interpret these data interestingly and effectively to the scintific community? Becuase, as this, I have 4 more test paramters (not only porosity) and four fibre types as well.
THnak you in advance. data, analysis MATLAB Answers — New Questions

​

I’m currently making a simple physical system (Gas, Mechanical in Simscape, consisting of a reservoir, two Compressors (G) (with an ideal angular velocity source), a Pipe (G) with a controlled heat flow source providing cooling, and a reservoir downstream to sink to. It’s a very simple system and more just being used as a high level model to test out FMU exports. None of the components are changed from default except for the Reservoirs, Heat Flow Sources providing some BCs, and the Compressor has Analytical parameterization and is being set to a specific design point based on a compressor data set that’s being used.
The model works fine in Simscape, I have a controller that admittedly takes a while to reach steady state but aside from that I’ve not seen any issues. When I export this model as an FMU, the model seems to break. I use the inputs that I’ve had before but they seem to break the model and give the following error:
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2ExitInitializationMode(Output): : The co-simulation model block ‘FMU_Testbed/FMU’ is not running.
Log from FMU: [category:logAll, status:fmi2OK] CommunicationPoint=0, communicationStepSize=100.
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2DoStep(Output): : The co-simulation model block ‘FMU_Testbed/FMU’ is not running.
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2FreeInstance: The following error occurred while simulating model ‘PASS_nodata_fmu_draft’ : Initial conditions solve failed to converge.
…Here is the set of components with unconverged equations:

‘PASS_nodata_fmu_draft/Pipe (G)1’
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/simscape/library/m/+foundation/+gas/+elements/pipe.ssc’ (line 351)

‘PASS_nodata_fmu_draft/Compressor (G)1’
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/fluids/fluids/+fluids/+gas/+turbomachinery/compressor.sscp'(no line number info)
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/fluids/fluids/+fluids/+gas/+turbomachinery/compressor.sscp'(no l
Component:Simulink | Category:Model
An error occurred during simulation and the simulation was terminated
Caused by:
Error in supplied FMU: An error occurred in function ‘fmi2DoStep’ for block ‘FMU_Testbed/FMU’ during simulation. For more information, see the FMU troubleshooting documentation.
Component:Simulink | Category:Block error
One theory I have is that because I’ve used Analytical mode as opposed to Tabulated parameterization, the compressor is struggling. This would explain why the FMU does seem to work after I increase the Speed, but the results are inaccurate (going from 0.3 kg/s to 14.3, and going from 101.3kPa to 10*4kPa)
Original Simscape Model:

FMU Block test (Constant inputs from Simscape were turned into inports and I’ve just been testing the FMU to see if they work):

Produces error mentioned earlier

FMU Block test, increased Speed:

Any help here would be appreciatedI’m currently making a simple physical system (Gas, Mechanical in Simscape, consisting of a reservoir, two Compressors (G) (with an ideal angular velocity source), a Pipe (G) with a controlled heat flow source providing cooling, and a reservoir downstream to sink to. It’s a very simple system and more just being used as a high level model to test out FMU exports. None of the components are changed from default except for the Reservoirs, Heat Flow Sources providing some BCs, and the Compressor has Analytical parameterization and is being set to a specific design point based on a compressor data set that’s being used.
The model works fine in Simscape, I have a controller that admittedly takes a while to reach steady state but aside from that I’ve not seen any issues. When I export this model as an FMU, the model seems to break. I use the inputs that I’ve had before but they seem to break the model and give the following error:
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2ExitInitializationMode(Output): : The co-simulation model block ‘FMU_Testbed/FMU’ is not running.
Log from FMU: [category:logAll, status:fmi2OK] CommunicationPoint=0, communicationStepSize=100.
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2DoStep(Output): : The co-simulation model block ‘FMU_Testbed/FMU’ is not running.
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2FreeInstance: The following error occurred while simulating model ‘PASS_nodata_fmu_draft’ : Initial conditions solve failed to converge.
…Here is the set of components with unconverged equations:

‘PASS_nodata_fmu_draft/Pipe (G)1’
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/simscape/library/m/+foundation/+gas/+elements/pipe.ssc’ (line 351)

‘PASS_nodata_fmu_draft/Compressor (G)1’
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/fluids/fluids/+fluids/+gas/+turbomachinery/compressor.sscp'(no line number info)
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/fluids/fluids/+fluids/+gas/+turbomachinery/compressor.sscp'(no l
Component:Simulink | Category:Model
An error occurred during simulation and the simulation was terminated
Caused by:
Error in supplied FMU: An error occurred in function ‘fmi2DoStep’ for block ‘FMU_Testbed/FMU’ during simulation. For more information, see the FMU troubleshooting documentation.
Component:Simulink | Category:Block error
One theory I have is that because I’ve used Analytical mode as opposed to Tabulated parameterization, the compressor is struggling. This would explain why the FMU does seem to work after I increase the Speed, but the results are inaccurate (going from 0.3 kg/s to 14.3, and going from 101.3kPa to 10*4kPa)
Original Simscape Model:

FMU Block test (Constant inputs from Simscape were turned into inports and I’ve just been testing the FMU to see if they work):

Produces error mentioned earlier

FMU Block test, increased Speed:

Any help here would be appreciated I’m currently making a simple physical system (Gas, Mechanical in Simscape, consisting of a reservoir, two Compressors (G) (with an ideal angular velocity source), a Pipe (G) with a controlled heat flow source providing cooling, and a reservoir downstream to sink to. It’s a very simple system and more just being used as a high level model to test out FMU exports. None of the components are changed from default except for the Reservoirs, Heat Flow Sources providing some BCs, and the Compressor has Analytical parameterization and is being set to a specific design point based on a compressor data set that’s being used.
The model works fine in Simscape, I have a controller that admittedly takes a while to reach steady state but aside from that I’ve not seen any issues. When I export this model as an FMU, the model seems to break. I use the inputs that I’ve had before but they seem to break the model and give the following error:
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2ExitInitializationMode(Output): : The co-simulation model block ‘FMU_Testbed/FMU’ is not running.
Log from FMU: [category:logAll, status:fmi2OK] CommunicationPoint=0, communicationStepSize=100.
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2DoStep(Output): : The co-simulation model block ‘FMU_Testbed/FMU’ is not running.
Log from FMU: [category:logStatusError, status:fmi2Error] fmi2FreeInstance: The following error occurred while simulating model ‘PASS_nodata_fmu_draft’ : Initial conditions solve failed to converge.
…Here is the set of components with unconverged equations:

‘PASS_nodata_fmu_draft/Pipe (G)1’
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/simscape/library/m/+foundation/+gas/+elements/pipe.ssc’ (line 351)

‘PASS_nodata_fmu_draft/Compressor (G)1’
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/fluids/fluids/+fluids/+gas/+turbomachinery/compressor.sscp'(no line number info)
Equation location is:
‘C:/Program Files/MATLAB/R2024a/toolbox/physmod/fluids/fluids/+fluids/+gas/+turbomachinery/compressor.sscp'(no l
Component:Simulink | Category:Model
An error occurred during simulation and the simulation was terminated
Caused by:
Error in supplied FMU: An error occurred in function ‘fmi2DoStep’ for block ‘FMU_Testbed/FMU’ during simulation. For more information, see the FMU troubleshooting documentation.
Component:Simulink | Category:Block error
One theory I have is that because I’ve used Analytical mode as opposed to Tabulated parameterization, the compressor is struggling. This would explain why the FMU does seem to work after I increase the Speed, but the results are inaccurate (going from 0.3 kg/s to 14.3, and going from 101.3kPa to 10*4kPa)
Original Simscape Model:

FMU Block test (Constant inputs from Simscape were turned into inports and I’ve just been testing the FMU to see if they work):

Produces error mentioned earlier

FMU Block test, increased Speed:

Any help here would be appreciated compressor (g), matlab, simscape, fluids, simulink, fmu, export MATLAB Answers — New Questions

​

Hi,
I got the following error from an old code that I am trying to fix to work in modern version of matlab: (If there is an easy way to fix the bug, would be really helpful!)
Java exception occurred:
java.awt.IllegalComponentStateException: The frame is decorated
at java.awt.Frame.setOpacity(Frame.java:960)
at java.awt.Window$1.setOpacity(Window.java:4037)
at com.sun.awt.AWTUtilities.setWindowOpacity(AWTUtilities.java:174)

The original code is the following:
for stepIdx = 1 : 10
if stepIdx == 1
com.sun.awt.AWTUtilities.setWindowOpacity(jWindow1,0.01)
pause(0.25)
end
newAlpha = -.01 + 0.1*stepIdx;
com.sun.awt.AWTUtilities.setWindowOpacity(jWindow1,newAlpha)
jWindow1.repaint;
endHi,
I got the following error from an old code that I am trying to fix to work in modern version of matlab: (If there is an easy way to fix the bug, would be really helpful!)
Java exception occurred:
java.awt.IllegalComponentStateException: The frame is decorated
at java.awt.Frame.setOpacity(Frame.java:960)
at java.awt.Window$1.setOpacity(Window.java:4037)
at com.sun.awt.AWTUtilities.setWindowOpacity(AWTUtilities.java:174)

The original code is the following:
for stepIdx = 1 : 10
if stepIdx == 1
com.sun.awt.AWTUtilities.setWindowOpacity(jWindow1,0.01)
pause(0.25)
end
newAlpha = -.01 + 0.1*stepIdx;
com.sun.awt.AWTUtilities.setWindowOpacity(jWindow1,newAlpha)
jWindow1.repaint;
end Hi,
I got the following error from an old code that I am trying to fix to work in modern version of matlab: (If there is an easy way to fix the bug, would be really helpful!)
Java exception occurred:
java.awt.IllegalComponentStateException: The frame is decorated
at java.awt.Frame.setOpacity(Frame.java:960)
at java.awt.Window$1.setOpacity(Window.java:4037)
at com.sun.awt.AWTUtilities.setWindowOpacity(AWTUtilities.java:174)

The original code is the following:
for stepIdx = 1 : 10
if stepIdx == 1
com.sun.awt.AWTUtilities.setWindowOpacity(jWindow1,0.01)
pause(0.25)
end
newAlpha = -.01 + 0.1*stepIdx;
com.sun.awt.AWTUtilities.setWindowOpacity(jWindow1,newAlpha)
jWindow1.repaint;
end java frame MATLAB Answers — New Questions

​

Hi, I did a LSTM model, just like the link mentioned(https://ww2.mathworks.cn/help/deeplearning/ref/trainnetwork.html), I specified the ValidationData in the opts.
options = trainingOptions("sgdm", …
MaxEpochs=8, …
ValidationData={XValidation,YValidation}, …
ValidationFrequency=30, …
Verbose=false, …
Plots="training-progress");
Because I want draw a picture including the YValidation data(which I specified) and predicted-YValidation data(which derived from the training net), the question is "How can I get the predicted YValidation data"?
Thank you!Hi, I did a LSTM model, just like the link mentioned(https://ww2.mathworks.cn/help/deeplearning/ref/trainnetwork.html), I specified the ValidationData in the opts.
options = trainingOptions("sgdm", …
MaxEpochs=8, …
ValidationData={XValidation,YValidation}, …
ValidationFrequency=30, …
Verbose=false, …
Plots="training-progress");
Because I want draw a picture including the YValidation data(which I specified) and predicted-YValidation data(which derived from the training net), the question is "How can I get the predicted YValidation data"?
Thank you! Hi, I did a LSTM model, just like the link mentioned(https://ww2.mathworks.cn/help/deeplearning/ref/trainnetwork.html), I specified the ValidationData in the opts.
options = trainingOptions("sgdm", …
MaxEpochs=8, …
ValidationData={XValidation,YValidation}, …
ValidationFrequency=30, …
Verbose=false, …
Plots="training-progress");
Because I want draw a picture including the YValidation data(which I specified) and predicted-YValidation data(which derived from the training net), the question is "How can I get the predicted YValidation data"?
Thank you! lstm, validation data MATLAB Answers — New Questions

​

Following the examples here to lear abount estimate nonlinear model.
After
openExample(‘ident/EstimateAHammersteinWienerModelExample’)
and press run button, I got this error output
Error using nlhw
Too many input arguments.

I debug a bit and found the error occurs at this line
[~, uC(~uNoNorm), uS(~uNoNorm)] = normalize(in(:,~uNoNorm),1,PV{:});

But I really did not figure out why. Thanks in advance for your kind help.Following the examples here to lear abount estimate nonlinear model.
After
openExample(‘ident/EstimateAHammersteinWienerModelExample’)
and press run button, I got this error output
Error using nlhw
Too many input arguments.

I debug a bit and found the error occurs at this line
[~, uC(~uNoNorm), uS(~uNoNorm)] = normalize(in(:,~uNoNorm),1,PV{:});

But I really did not figure out why. Thanks in advance for your kind help. Following the examples here to lear abount estimate nonlinear model.
After
openExample(‘ident/EstimateAHammersteinWienerModelExample’)
and press run button, I got this error output
Error using nlhw
Too many input arguments.

I debug a bit and found the error occurs at this line
[~, uC(~uNoNorm), uS(~uNoNorm)] = normalize(in(:,~uNoNorm),1,PV{:});

But I really did not figure out why. Thanks in advance for your kind help. system identification, nlhw, hammerstein-wiener model MATLAB Answers — New Questions

​

I am attempting to debug a Matlab "mex" file using Visual Studio.
I can attach Visual Studio to Matlab and set a breakpoint in my mex file source code just fine in the first go-around. When calling the mex file, visual studio stops at the breakpoint, and I note that the mex file is listed in the loaded modules:

However, if I de-attach visual studio, then re-attach, seems that visual studio no longer detects the loaded modules. See screenshot below, there are far fewer modules listed:

This is quite frustrating, as the only way I seem to be able to work around is to quit Matlab and re-start each time in need to re-attach the debugger (i.e. after tweaking code and rebuilding the mex file).
I used to do this all the time in the past (i.e. with VS 2010-2012 / Matlab R2012B-R2017B), but I’m stumped on this now using VS 2015 w/ Matlab R2019B.I am attempting to debug a Matlab "mex" file using Visual Studio.
I can attach Visual Studio to Matlab and set a breakpoint in my mex file source code just fine in the first go-around. When calling the mex file, visual studio stops at the breakpoint, and I note that the mex file is listed in the loaded modules:

However, if I de-attach visual studio, then re-attach, seems that visual studio no longer detects the loaded modules. See screenshot below, there are far fewer modules listed:

This is quite frustrating, as the only way I seem to be able to work around is to quit Matlab and re-start each time in need to re-attach the debugger (i.e. after tweaking code and rebuilding the mex file).
I used to do this all the time in the past (i.e. with VS 2010-2012 / Matlab R2012B-R2017B), but I’m stumped on this now using VS 2015 w/ Matlab R2019B. I am attempting to debug a Matlab "mex" file using Visual Studio.
I can attach Visual Studio to Matlab and set a breakpoint in my mex file source code just fine in the first go-around. When calling the mex file, visual studio stops at the breakpoint, and I note that the mex file is listed in the loaded modules:

However, if I de-attach visual studio, then re-attach, seems that visual studio no longer detects the loaded modules. See screenshot below, there are far fewer modules listed:

This is quite frustrating, as the only way I seem to be able to work around is to quit Matlab and re-start each time in need to re-attach the debugger (i.e. after tweaking code and rebuilding the mex file).
I used to do this all the time in the past (i.e. with VS 2010-2012 / Matlab R2012B-R2017B), but I’m stumped on this now using VS 2015 w/ Matlab R2019B. mex compiler, debug, mex, visual studio MATLAB Answers — New Questions

​

I’m trying to make a 256×256 matrix of colors fading into each other. The top left corner is red, the top right is purple, the bottom right is blue, and the bottom left is green. The blue and the red fade into each other, which is easy to figure out. The problem is the green fades out radially, in both directions, and I can’t get my image to do that. My code so far is:

mat3d(:,:,1) = zeros(256,256);
mat3d(:,:,2) = zeros(256,256);
mat3d(:,:,3) = zeros(256,256);

increase = linspace(0,1,256);
decrease = linspace(1,0,256);

for i = 1:256
mat3d(i,:,1) = decrease(i);
mat3d(:,i,3) = increase(i);

for j = 1:256
dist = sqrt((256-i)^2+(256-j)^2);

end
end

I can’t figure out how to write the last for loop.I’m trying to make a 256×256 matrix of colors fading into each other. The top left corner is red, the top right is purple, the bottom right is blue, and the bottom left is green. The blue and the red fade into each other, which is easy to figure out. The problem is the green fades out radially, in both directions, and I can’t get my image to do that. My code so far is:

mat3d(:,:,1) = zeros(256,256);
mat3d(:,:,2) = zeros(256,256);
mat3d(:,:,3) = zeros(256,256);

increase = linspace(0,1,256);
decrease = linspace(1,0,256);

for i = 1:256
mat3d(i,:,1) = decrease(i);
mat3d(:,i,3) = increase(i);

for j = 1:256
dist = sqrt((256-i)^2+(256-j)^2);

end
end

I can’t figure out how to write the last for loop. I’m trying to make a 256×256 matrix of colors fading into each other. The top left corner is red, the top right is purple, the bottom right is blue, and the bottom left is green. The blue and the red fade into each other, which is easy to figure out. The problem is the green fades out radially, in both directions, and I can’t get my image to do that. My code so far is:

mat3d(:,:,1) = zeros(256,256);
mat3d(:,:,2) = zeros(256,256);
mat3d(:,:,3) = zeros(256,256);

increase = linspace(0,1,256);
decrease = linspace(1,0,256);

for i = 1:256
mat3d(i,:,1) = decrease(i);
mat3d(:,i,3) = increase(i);

for j = 1:256
dist = sqrt((256-i)^2+(256-j)^2);

end
end

I can’t figure out how to write the last for loop. images, colors, fading colors, script MATLAB Answers — New Questions

​

I want to use the WindowButtonMotion callback to produce a ‘hover’ effect on various images that I’m using as buttons on an App I’m designing, but it looks like just turning on the UIFigure’s WindowButtonMotion callback completely disables interactivity (pan, rotate, etc.) with the UIAxes. I have a surface plot showing a 3D render of the data the user is visualizing, but it becomes completely non-interactive when I use buttonmotion callbacks to track mouse movements for the mouse hover.

I’ve tried various ways to get around this, including setting the UIAxes.View property as a function of mouse positions when the mouse is within the UIAxes, but this seems really clunky, and I can’t seem to work out how to ‘click & drag’ to interact with the surface plot correctly.

Any solutions to re-enable plot interactions? I’m working on Matlab 2019a.I want to use the WindowButtonMotion callback to produce a ‘hover’ effect on various images that I’m using as buttons on an App I’m designing, but it looks like just turning on the UIFigure’s WindowButtonMotion callback completely disables interactivity (pan, rotate, etc.) with the UIAxes. I have a surface plot showing a 3D render of the data the user is visualizing, but it becomes completely non-interactive when I use buttonmotion callbacks to track mouse movements for the mouse hover.

I’ve tried various ways to get around this, including setting the UIAxes.View property as a function of mouse positions when the mouse is within the UIAxes, but this seems really clunky, and I can’t seem to work out how to ‘click & drag’ to interact with the surface plot correctly.

Any solutions to re-enable plot interactions? I’m working on Matlab 2019a. I want to use the WindowButtonMotion callback to produce a ‘hover’ effect on various images that I’m using as buttons on an App I’m designing, but it looks like just turning on the UIFigure’s WindowButtonMotion callback completely disables interactivity (pan, rotate, etc.) with the UIAxes. I have a surface plot showing a 3D render of the data the user is visualizing, but it becomes completely non-interactive when I use buttonmotion callbacks to track mouse movements for the mouse hover.

I’ve tried various ways to get around this, including setting the UIAxes.View property as a function of mouse positions when the mouse is within the UIAxes, but this seems really clunky, and I can’t seem to work out how to ‘click & drag’ to interact with the surface plot correctly.

Any solutions to re-enable plot interactions? I’m working on Matlab 2019a. appdesigner, uiaxes, interactions, pan, zoom, windowbuttonmotion, 3drotate, callback events MATLAB Answers — New Questions

​