Tag Archives: matlab
Assenza comando Estimate in estimate transfer function
Post Content Post Content system identification, estimate transfer function MATLAB Answers — New Questions
Extract data from fileDatastore and cell
read(fds)
ans =
struct with fields:
data: {178093×3 cell}
Cell data is somthing like that
{1×1×9 double} {10×20×3 single} {[0.4343]}
How can extract all rows and but 1 and 3 number columns such as only {1×1×9 double} {[0.4343]} using fds.data ?read(fds)
ans =
struct with fields:
data: {178093×3 cell}
Cell data is somthing like that
{1×1×9 double} {10×20×3 single} {[0.4343]}
How can extract all rows and but 1 and 3 number columns such as only {1×1×9 double} {[0.4343]} using fds.data ? read(fds)
ans =
struct with fields:
data: {178093×3 cell}
Cell data is somthing like that
{1×1×9 double} {10×20×3 single} {[0.4343]}
How can extract all rows and but 1 and 3 number columns such as only {1×1×9 double} {[0.4343]} using fds.data ? filedatastore, cell MATLAB Answers — New Questions
why do I get the error ”Attempt to execute SCRIPT edge as a function:”?
I want to edge a gray scale image and I receive this error: ”Attempt to execute SCRIPT edge as a function:” can any one help me?I want to edge a gray scale image and I receive this error: ”Attempt to execute SCRIPT edge as a function:” can any one help me? I want to edge a gray scale image and I receive this error: ”Attempt to execute SCRIPT edge as a function:” can any one help me? image processing MATLAB Answers — New Questions
Issue When Update to MATLAB R2024a
When I tried to update to R2024a, I got the popup to agree the license agreement. But I can’t click either "Yes" or "No", neither "Next" or "Cancel" button, like the screen shot attached below. I tried change screen resolution but it doesn’t resolve the issue. Any suggestions on how to solve it?
Many thanks!When I tried to update to R2024a, I got the popup to agree the license agreement. But I can’t click either "Yes" or "No", neither "Next" or "Cancel" button, like the screen shot attached below. I tried change screen resolution but it doesn’t resolve the issue. Any suggestions on how to solve it?
Many thanks! When I tried to update to R2024a, I got the popup to agree the license agreement. But I can’t click either "Yes" or "No", neither "Next" or "Cancel" button, like the screen shot attached below. I tried change screen resolution but it doesn’t resolve the issue. Any suggestions on how to solve it?
Many thanks! r2024a, update MATLAB Answers — New Questions
Error running ‘h2f_175_S2_sil_plant_model’ on target computer: Timed out waiting for External mode connect to complete.
Hello
I am running Fuel cell plant model on speedgoat target machine, while running in getting this single error <Error running ‘h2f_175_S2_sil_plant_model’ on target computer: Timed out waiting for External mode connect to complete.>, while model uploaded to target machine but simulation not starting .
Thanks in advancedHello
I am running Fuel cell plant model on speedgoat target machine, while running in getting this single error <Error running ‘h2f_175_S2_sil_plant_model’ on target computer: Timed out waiting for External mode connect to complete.>, while model uploaded to target machine but simulation not starting .
Thanks in advanced Hello
I am running Fuel cell plant model on speedgoat target machine, while running in getting this single error <Error running ‘h2f_175_S2_sil_plant_model’ on target computer: Timed out waiting for External mode connect to complete.>, while model uploaded to target machine but simulation not starting .
Thanks in advanced thingspeak, realtime, matlab, simulink, targetmachine MATLAB Answers — New Questions
GUIDE code from pre 2015 need to access the button press function and “programatically press the button” from a different m file
Hey All
As the title suggests, I am dealing with a GUIDE file from a long time ago and I need to have it running and while its running I want to be able to access one of the functions called SaveSpectrumPlotButton_Callback() on line 1933
I have not been able to find how to access it from a different file or even create an output that I could maybe access in order to activate that button. I have shared the m file below
Any help would be much appreciated/Hey All
As the title suggests, I am dealing with a GUIDE file from a long time ago and I need to have it running and while its running I want to be able to access one of the functions called SaveSpectrumPlotButton_Callback() on line 1933
I have not been able to find how to access it from a different file or even create an output that I could maybe access in order to activate that button. I have shared the m file below
Any help would be much appreciated/ Hey All
As the title suggests, I am dealing with a GUIDE file from a long time ago and I need to have it running and while its running I want to be able to access one of the functions called SaveSpectrumPlotButton_Callback() on line 1933
I have not been able to find how to access it from a different file or even create an output that I could maybe access in order to activate that button. I have shared the m file below
Any help would be much appreciated/ guide, serial communication, functions MATLAB Answers — New Questions
Can’t I import tdms file in R2023b?
Hello,
I installed R2023b version in my company PC.
I want to import TDMS file in R2023b but it happened error messages.
" Error using untitled
License not found. Data Acquisition Toolbox or Communications Toolbox is required to use TDMS feature."
I found that it can be imported from R2024a.
So, Isn’t there a licence of importing TDMS file in R2023b?
Please let me know.
Thank you.Hello,
I installed R2023b version in my company PC.
I want to import TDMS file in R2023b but it happened error messages.
" Error using untitled
License not found. Data Acquisition Toolbox or Communications Toolbox is required to use TDMS feature."
I found that it can be imported from R2024a.
So, Isn’t there a licence of importing TDMS file in R2023b?
Please let me know.
Thank you. Hello,
I installed R2023b version in my company PC.
I want to import TDMS file in R2023b but it happened error messages.
" Error using untitled
License not found. Data Acquisition Toolbox or Communications Toolbox is required to use TDMS feature."
I found that it can be imported from R2024a.
So, Isn’t there a licence of importing TDMS file in R2023b?
Please let me know.
Thank you. import, tdms file MATLAB Answers — New Questions
Setting bounds for constants in a fit() object in terms of other constants in the fit object
Hello, I am currently trying to fit experimental data that I theorize fits a logarithmic function.
To this end, I am using the fit() and fitoptions() function in order to create a logarithmic equation.
Since the default MATLAB logarithmic fit model does not seem to account for horizontal translation and scaling, I have created a custom fit type as seen below:
shiftedLog = fittype(‘A*log((B*x)-C) + D’, ‘independent’, ‘x’, ‘coefficients’, {‘A’,’B’,’C’,’D’});
% set the bounds
opts.StartPoint = […]; % Initial guesses for [A, B, C, D]
opts.Lower = […]; % Lower bounds for [A, B, C, D]
opts.Upper = […]; % Upper bounds for [A, B, C, D]
I have noticed that when I try to run this program, I have ran into errors where the fit object returns either infinity or a complex value.
Since the log() function is defined only when its inner argument > 0, I need to specify the bounds for variables B and C to keep the entire argument positive.
However, When I try to specify the bounds in terms of the constants of the fit object, for example:
opts.Lower = [-Inf, C/min(x),…]
MATLAB gives me an error.
I know that in the main script code, the constants A, B, C, and D are not standalone variables so the main script has this issue, but as (to my knowledge) fit() finds the best values for the constants through an iterative process. Given this, It is impractical to specify a hard-coded value for the limits.
How should I approach this problem? Is there another way to find fit of a logarithmic function that incorporates ‘shifting’ and ‘stretching’ in both horizontal and vertical directions? Or is there a workaround? Thank you in advance.Hello, I am currently trying to fit experimental data that I theorize fits a logarithmic function.
To this end, I am using the fit() and fitoptions() function in order to create a logarithmic equation.
Since the default MATLAB logarithmic fit model does not seem to account for horizontal translation and scaling, I have created a custom fit type as seen below:
shiftedLog = fittype(‘A*log((B*x)-C) + D’, ‘independent’, ‘x’, ‘coefficients’, {‘A’,’B’,’C’,’D’});
% set the bounds
opts.StartPoint = […]; % Initial guesses for [A, B, C, D]
opts.Lower = […]; % Lower bounds for [A, B, C, D]
opts.Upper = […]; % Upper bounds for [A, B, C, D]
I have noticed that when I try to run this program, I have ran into errors where the fit object returns either infinity or a complex value.
Since the log() function is defined only when its inner argument > 0, I need to specify the bounds for variables B and C to keep the entire argument positive.
However, When I try to specify the bounds in terms of the constants of the fit object, for example:
opts.Lower = [-Inf, C/min(x),…]
MATLAB gives me an error.
I know that in the main script code, the constants A, B, C, and D are not standalone variables so the main script has this issue, but as (to my knowledge) fit() finds the best values for the constants through an iterative process. Given this, It is impractical to specify a hard-coded value for the limits.
How should I approach this problem? Is there another way to find fit of a logarithmic function that incorporates ‘shifting’ and ‘stretching’ in both horizontal and vertical directions? Or is there a workaround? Thank you in advance. Hello, I am currently trying to fit experimental data that I theorize fits a logarithmic function.
To this end, I am using the fit() and fitoptions() function in order to create a logarithmic equation.
Since the default MATLAB logarithmic fit model does not seem to account for horizontal translation and scaling, I have created a custom fit type as seen below:
shiftedLog = fittype(‘A*log((B*x)-C) + D’, ‘independent’, ‘x’, ‘coefficients’, {‘A’,’B’,’C’,’D’});
% set the bounds
opts.StartPoint = […]; % Initial guesses for [A, B, C, D]
opts.Lower = […]; % Lower bounds for [A, B, C, D]
opts.Upper = […]; % Upper bounds for [A, B, C, D]
I have noticed that when I try to run this program, I have ran into errors where the fit object returns either infinity or a complex value.
Since the log() function is defined only when its inner argument > 0, I need to specify the bounds for variables B and C to keep the entire argument positive.
However, When I try to specify the bounds in terms of the constants of the fit object, for example:
opts.Lower = [-Inf, C/min(x),…]
MATLAB gives me an error.
I know that in the main script code, the constants A, B, C, and D are not standalone variables so the main script has this issue, but as (to my knowledge) fit() finds the best values for the constants through an iterative process. Given this, It is impractical to specify a hard-coded value for the limits.
How should I approach this problem? Is there another way to find fit of a logarithmic function that incorporates ‘shifting’ and ‘stretching’ in both horizontal and vertical directions? Or is there a workaround? Thank you in advance. curve fitting, function MATLAB Answers — New Questions
coefficients checked asking for him
I would like to check the coefficients of a quadratic equation as a real number. I would like to establish a vector for an equation ax^2+bx+c–> [a b c] . in case of the variable if you are a character writes zero let the felhaszáló ask for the number again with an error message.How I may make this?I would like to check the coefficients of a quadratic equation as a real number. I would like to establish a vector for an equation ax^2+bx+c–> [a b c] . in case of the variable if you are a character writes zero let the felhaszáló ask for the number again with an error message.How I may make this? I would like to check the coefficients of a quadratic equation as a real number. I would like to establish a vector for an equation ax^2+bx+c–> [a b c] . in case of the variable if you are a character writes zero let the felhaszáló ask for the number again with an error message.How I may make this? basic matlab MATLAB Answers — New Questions
How do I pass a dynamic number of output variables to a function?
Some functions change their behavior dependending on the number of output variables. For example, ndgrid will create N N-Dimensional arrays where N is the number of output variables. I need to pass a number of output variables that depends on other variable (whose value is not previously known). Is it possible to do that? What is the best way to do that?Some functions change their behavior dependending on the number of output variables. For example, ndgrid will create N N-Dimensional arrays where N is the number of output variables. I need to pass a number of output variables that depends on other variable (whose value is not previously known). Is it possible to do that? What is the best way to do that? Some functions change their behavior dependending on the number of output variables. For example, ndgrid will create N N-Dimensional arrays where N is the number of output variables. I need to pass a number of output variables that depends on other variable (whose value is not previously known). Is it possible to do that? What is the best way to do that? output, function MATLAB Answers — New Questions
How to make the font sizes of Xlabel, Ylabel, and Title different in a heat map using MATLAB?
I have used the heatmap function in MATLAB to draw a figure. However, the font sizes of Xlabel, Ylabel, and Ttile are same. How to make the font sizes of Xlabel, Ylabel, and Title different in a heat map?I have used the heatmap function in MATLAB to draw a figure. However, the font sizes of Xlabel, Ylabel, and Ttile are same. How to make the font sizes of Xlabel, Ylabel, and Title different in a heat map? I have used the heatmap function in MATLAB to draw a figure. However, the font sizes of Xlabel, Ylabel, and Ttile are same. How to make the font sizes of Xlabel, Ylabel, and Title different in a heat map? heatmap, fontsize MATLAB Answers — New Questions
How to do skull stripping when the skull in the image is not complete?
How do I remove the skull (as well as others tissues that are not tumor, but have similar intensity) from the MRI images? I have seen methods including removing the largest blob (the skull), but the skull does not enclose the brain fully in the picture I attached here. Using imbinarize will also keep other tissues which have similar intensity as the tumor in the image.
I have tried to use imerode, but the skull is not removed entirely.
Any help is appreciated. Thanks!How do I remove the skull (as well as others tissues that are not tumor, but have similar intensity) from the MRI images? I have seen methods including removing the largest blob (the skull), but the skull does not enclose the brain fully in the picture I attached here. Using imbinarize will also keep other tissues which have similar intensity as the tumor in the image.
I have tried to use imerode, but the skull is not removed entirely.
Any help is appreciated. Thanks! How do I remove the skull (as well as others tissues that are not tumor, but have similar intensity) from the MRI images? I have seen methods including removing the largest blob (the skull), but the skull does not enclose the brain fully in the picture I attached here. Using imbinarize will also keep other tissues which have similar intensity as the tumor in the image.
I have tried to use imerode, but the skull is not removed entirely.
Any help is appreciated. Thanks! brain tumor, image processing MATLAB Answers — New Questions
Create Variable in Simulink block that contains 63 elements.
I have 63 Sine blocks that will have different amplitude values. The values will be set from Matlab workspace. I would like to loop through the data and set the amplitudes values programmatically. However, I only know how to create a constant from the Create Variable option in the Simulink Sine block. How to I create a variable that has 63 elements so I can loop throught my data and assign the data correctly?I have 63 Sine blocks that will have different amplitude values. The values will be set from Matlab workspace. I would like to loop through the data and set the amplitudes values programmatically. However, I only know how to create a constant from the Create Variable option in the Simulink Sine block. How to I create a variable that has 63 elements so I can loop throught my data and assign the data correctly? I have 63 Sine blocks that will have different amplitude values. The values will be set from Matlab workspace. I would like to loop through the data and set the amplitudes values programmatically. However, I only know how to create a constant from the Create Variable option in the Simulink Sine block. How to I create a variable that has 63 elements so I can loop throught my data and assign the data correctly? create variable in simulink MATLAB Answers — New Questions
Can’t click “Roll The Dice!” problem in intro to matlab cody problems therefor cannot earn badge.
I am trying to earn my badge in intro to matlab in the Cody problems. I completed all the problems besides Roll The Dice! which is restraining me from earning the badge. It is simply not letting me click the problem.I am trying to earn my badge in intro to matlab in the Cody problems. I completed all the problems besides Roll The Dice! which is restraining me from earning the badge. It is simply not letting me click the problem. I am trying to earn my badge in intro to matlab in the Cody problems. I completed all the problems besides Roll The Dice! which is restraining me from earning the badge. It is simply not letting me click the problem. dice cody MATLAB Answers — New Questions
Applying logic to Curve Fitter Output
I am trying to use Curve Fitter and generating the code to help teach myself how to process my data without Curve Fitter.
Is there a way to apply a logic that a certain data point should be lower/higher than another certain data point, and have the coefficients adjust accordingly?
%CREATEFIT(TWOSOUSANDTQSPK,TWOSOUSANDTQAPC,TWOSOUSANDTQNM)
% Create a fit.
%
% Data for ‘2000 copy 1’ fit:
% X Input: twosousandTQSPK
% Y Input: twosousandTQAPC
% Z Output: twosousandTQnm
% Output:
% fitresult : a fit object representing the fit.
% gof : structure with goodness-of fit info.
%
% See also FIT, CFIT, SFIT.
% Auto-generated by MATLAB on 18-Jul-2024 20:43:50
%% Fit: ‘2000 copy 1’.
[xData, yData, zData] = prepareSurfaceData( twosousandTQSPK, twosousandTQAPC, twosousandTQnm );
% Set up fittype and options.
ft = fittype( ‘A+(x*B)+(C*x*x)+(y*x*D)+(y*x*x*E)+(y*F)’, ‘independent’, {‘x’, ‘y’}, ‘dependent’, ‘z’ );
opts = fitoptions( ‘Method’, ‘NonlinearLeastSquares’ );
opts.Display = ‘Off’;
opts.MaxFunEvals = 60000;
opts.MaxIter = 40000;
opts.StartPoint = [0.0526769976807926 0.737858095516997 0.269119426398556 0.422835615008808 0.547870901214845 0.942736984276934];
opts.TolFun = 0.1;
opts.TolX = 0.1;
% Fit model to data.
[fitresult, gof] = fit( [xData, yData], zData, ft, opts );
% Plot fit with data.
figure( ‘Name’, ‘2000 copy 1’ );
h = plot( fitresult, [xData, yData], zData );
legend( h, ‘2000 copy 1’, ‘twosousandTQnm vs. twosousandTQSPK, twosousandTQAPC’, ‘Location’, ‘NorthEast’, ‘Interpreter’, ‘none’ );
% Label axes
xlabel( ‘twosousandTQSPK’, ‘Interpreter’, ‘none’ );
ylabel( ‘twosousandTQAPC’, ‘Interpreter’, ‘none’ );
zlabel( ‘twosousandTQnm’, ‘Interpreter’, ‘none’ );
grid off
view( -2.9, 15.3 );
I am looking to apply that the output data should follow the ‘twosousandTQSPK’ axis relative. I reserached the weighting function, but I I don’t know how I could accurately match the data inputs I have to weight it.
This is an example of what I am expecting with a different set of variables, but the results above in question should resemble this outcome to some degree.
%CREATEFIT(SIXTEENTQSPK,SIXTEENTQAPC,SIXTEENTQNM)
% Create a fit.
%
% Data for ‘1600 copy 2’ fit:
% X Input: sixteenTQSPK
% Y Input: sixteenTQAPC
% Z Output: sixteenTQnm
% Output:
% fitresult : a fit object representing the fit.
% gof : structure with goodness-of fit info.
%
% See also FIT, CFIT, SFIT.
% Auto-generated by MATLAB on 18-Jul-2024 20:55:15
%% Fit: ‘1600 copy 2’.
[xData, yData, zData] = prepareSurfaceData( sixteenTQSPK, sixteenTQAPC, sixteenTQnm );
% Set up fittype and options.
ft = fittype( ‘(y*A)+B+(x*C)+(D*x*x)+(y*x*E)+(y*x*x*F)’, ‘independent’, {‘x’, ‘y’}, ‘dependent’, ‘z’ );
opts = fitoptions( ‘Method’, ‘NonlinearLeastSquares’ );
opts.Display = ‘Off’;
opts.MaxFunEvals = 60000;
opts.MaxIter = 40000;
opts.StartPoint = [0.0430238016578078 0.168990029462704 0.649115474956452 0.73172238565867 0.647745963136307 0.450923706430945];
opts.TolFun = 0.1;
opts.TolX = 0.1;
% Fit model to data.
[fitresult, gof] = fit( [xData, yData], zData, ft, opts );
% Plot fit with data.
figure( ‘Name’, ‘1600 copy 2’ );
h = plot( fitresult, [xData, yData], zData );
legend( h, ‘1600 copy 2’, ‘sixteenTQnm vs. sixteenTQSPK, sixteenTQAPC’, ‘Location’, ‘NorthEast’, ‘Interpreter’, ‘none’ );
% Label axes
xlabel( ‘sixteenTQSPK’, ‘Interpreter’, ‘none’ );
ylabel( ‘sixteenTQAPC’, ‘Interpreter’, ‘none’ );
zlabel( ‘sixteenTQnm’, ‘Interpreter’, ‘none’ );
grid off
view( -0.5, -13.0 );I am trying to use Curve Fitter and generating the code to help teach myself how to process my data without Curve Fitter.
Is there a way to apply a logic that a certain data point should be lower/higher than another certain data point, and have the coefficients adjust accordingly?
%CREATEFIT(TWOSOUSANDTQSPK,TWOSOUSANDTQAPC,TWOSOUSANDTQNM)
% Create a fit.
%
% Data for ‘2000 copy 1’ fit:
% X Input: twosousandTQSPK
% Y Input: twosousandTQAPC
% Z Output: twosousandTQnm
% Output:
% fitresult : a fit object representing the fit.
% gof : structure with goodness-of fit info.
%
% See also FIT, CFIT, SFIT.
% Auto-generated by MATLAB on 18-Jul-2024 20:43:50
%% Fit: ‘2000 copy 1’.
[xData, yData, zData] = prepareSurfaceData( twosousandTQSPK, twosousandTQAPC, twosousandTQnm );
% Set up fittype and options.
ft = fittype( ‘A+(x*B)+(C*x*x)+(y*x*D)+(y*x*x*E)+(y*F)’, ‘independent’, {‘x’, ‘y’}, ‘dependent’, ‘z’ );
opts = fitoptions( ‘Method’, ‘NonlinearLeastSquares’ );
opts.Display = ‘Off’;
opts.MaxFunEvals = 60000;
opts.MaxIter = 40000;
opts.StartPoint = [0.0526769976807926 0.737858095516997 0.269119426398556 0.422835615008808 0.547870901214845 0.942736984276934];
opts.TolFun = 0.1;
opts.TolX = 0.1;
% Fit model to data.
[fitresult, gof] = fit( [xData, yData], zData, ft, opts );
% Plot fit with data.
figure( ‘Name’, ‘2000 copy 1’ );
h = plot( fitresult, [xData, yData], zData );
legend( h, ‘2000 copy 1’, ‘twosousandTQnm vs. twosousandTQSPK, twosousandTQAPC’, ‘Location’, ‘NorthEast’, ‘Interpreter’, ‘none’ );
% Label axes
xlabel( ‘twosousandTQSPK’, ‘Interpreter’, ‘none’ );
ylabel( ‘twosousandTQAPC’, ‘Interpreter’, ‘none’ );
zlabel( ‘twosousandTQnm’, ‘Interpreter’, ‘none’ );
grid off
view( -2.9, 15.3 );
I am looking to apply that the output data should follow the ‘twosousandTQSPK’ axis relative. I reserached the weighting function, but I I don’t know how I could accurately match the data inputs I have to weight it.
This is an example of what I am expecting with a different set of variables, but the results above in question should resemble this outcome to some degree.
%CREATEFIT(SIXTEENTQSPK,SIXTEENTQAPC,SIXTEENTQNM)
% Create a fit.
%
% Data for ‘1600 copy 2’ fit:
% X Input: sixteenTQSPK
% Y Input: sixteenTQAPC
% Z Output: sixteenTQnm
% Output:
% fitresult : a fit object representing the fit.
% gof : structure with goodness-of fit info.
%
% See also FIT, CFIT, SFIT.
% Auto-generated by MATLAB on 18-Jul-2024 20:55:15
%% Fit: ‘1600 copy 2’.
[xData, yData, zData] = prepareSurfaceData( sixteenTQSPK, sixteenTQAPC, sixteenTQnm );
% Set up fittype and options.
ft = fittype( ‘(y*A)+B+(x*C)+(D*x*x)+(y*x*E)+(y*x*x*F)’, ‘independent’, {‘x’, ‘y’}, ‘dependent’, ‘z’ );
opts = fitoptions( ‘Method’, ‘NonlinearLeastSquares’ );
opts.Display = ‘Off’;
opts.MaxFunEvals = 60000;
opts.MaxIter = 40000;
opts.StartPoint = [0.0430238016578078 0.168990029462704 0.649115474956452 0.73172238565867 0.647745963136307 0.450923706430945];
opts.TolFun = 0.1;
opts.TolX = 0.1;
% Fit model to data.
[fitresult, gof] = fit( [xData, yData], zData, ft, opts );
% Plot fit with data.
figure( ‘Name’, ‘1600 copy 2’ );
h = plot( fitresult, [xData, yData], zData );
legend( h, ‘1600 copy 2’, ‘sixteenTQnm vs. sixteenTQSPK, sixteenTQAPC’, ‘Location’, ‘NorthEast’, ‘Interpreter’, ‘none’ );
% Label axes
xlabel( ‘sixteenTQSPK’, ‘Interpreter’, ‘none’ );
ylabel( ‘sixteenTQAPC’, ‘Interpreter’, ‘none’ );
zlabel( ‘sixteenTQnm’, ‘Interpreter’, ‘none’ );
grid off
view( -0.5, -13.0 ); I am trying to use Curve Fitter and generating the code to help teach myself how to process my data without Curve Fitter.
Is there a way to apply a logic that a certain data point should be lower/higher than another certain data point, and have the coefficients adjust accordingly?
%CREATEFIT(TWOSOUSANDTQSPK,TWOSOUSANDTQAPC,TWOSOUSANDTQNM)
% Create a fit.
%
% Data for ‘2000 copy 1’ fit:
% X Input: twosousandTQSPK
% Y Input: twosousandTQAPC
% Z Output: twosousandTQnm
% Output:
% fitresult : a fit object representing the fit.
% gof : structure with goodness-of fit info.
%
% See also FIT, CFIT, SFIT.
% Auto-generated by MATLAB on 18-Jul-2024 20:43:50
%% Fit: ‘2000 copy 1’.
[xData, yData, zData] = prepareSurfaceData( twosousandTQSPK, twosousandTQAPC, twosousandTQnm );
% Set up fittype and options.
ft = fittype( ‘A+(x*B)+(C*x*x)+(y*x*D)+(y*x*x*E)+(y*F)’, ‘independent’, {‘x’, ‘y’}, ‘dependent’, ‘z’ );
opts = fitoptions( ‘Method’, ‘NonlinearLeastSquares’ );
opts.Display = ‘Off’;
opts.MaxFunEvals = 60000;
opts.MaxIter = 40000;
opts.StartPoint = [0.0526769976807926 0.737858095516997 0.269119426398556 0.422835615008808 0.547870901214845 0.942736984276934];
opts.TolFun = 0.1;
opts.TolX = 0.1;
% Fit model to data.
[fitresult, gof] = fit( [xData, yData], zData, ft, opts );
% Plot fit with data.
figure( ‘Name’, ‘2000 copy 1’ );
h = plot( fitresult, [xData, yData], zData );
legend( h, ‘2000 copy 1’, ‘twosousandTQnm vs. twosousandTQSPK, twosousandTQAPC’, ‘Location’, ‘NorthEast’, ‘Interpreter’, ‘none’ );
% Label axes
xlabel( ‘twosousandTQSPK’, ‘Interpreter’, ‘none’ );
ylabel( ‘twosousandTQAPC’, ‘Interpreter’, ‘none’ );
zlabel( ‘twosousandTQnm’, ‘Interpreter’, ‘none’ );
grid off
view( -2.9, 15.3 );
I am looking to apply that the output data should follow the ‘twosousandTQSPK’ axis relative. I reserached the weighting function, but I I don’t know how I could accurately match the data inputs I have to weight it.
This is an example of what I am expecting with a different set of variables, but the results above in question should resemble this outcome to some degree.
%CREATEFIT(SIXTEENTQSPK,SIXTEENTQAPC,SIXTEENTQNM)
% Create a fit.
%
% Data for ‘1600 copy 2’ fit:
% X Input: sixteenTQSPK
% Y Input: sixteenTQAPC
% Z Output: sixteenTQnm
% Output:
% fitresult : a fit object representing the fit.
% gof : structure with goodness-of fit info.
%
% See also FIT, CFIT, SFIT.
% Auto-generated by MATLAB on 18-Jul-2024 20:55:15
%% Fit: ‘1600 copy 2’.
[xData, yData, zData] = prepareSurfaceData( sixteenTQSPK, sixteenTQAPC, sixteenTQnm );
% Set up fittype and options.
ft = fittype( ‘(y*A)+B+(x*C)+(D*x*x)+(y*x*E)+(y*x*x*F)’, ‘independent’, {‘x’, ‘y’}, ‘dependent’, ‘z’ );
opts = fitoptions( ‘Method’, ‘NonlinearLeastSquares’ );
opts.Display = ‘Off’;
opts.MaxFunEvals = 60000;
opts.MaxIter = 40000;
opts.StartPoint = [0.0430238016578078 0.168990029462704 0.649115474956452 0.73172238565867 0.647745963136307 0.450923706430945];
opts.TolFun = 0.1;
opts.TolX = 0.1;
% Fit model to data.
[fitresult, gof] = fit( [xData, yData], zData, ft, opts );
% Plot fit with data.
figure( ‘Name’, ‘1600 copy 2’ );
h = plot( fitresult, [xData, yData], zData );
legend( h, ‘1600 copy 2’, ‘sixteenTQnm vs. sixteenTQSPK, sixteenTQAPC’, ‘Location’, ‘NorthEast’, ‘Interpreter’, ‘none’ );
% Label axes
xlabel( ‘sixteenTQSPK’, ‘Interpreter’, ‘none’ );
ylabel( ‘sixteenTQAPC’, ‘Interpreter’, ‘none’ );
zlabel( ‘sixteenTQnm’, ‘Interpreter’, ‘none’ );
grid off
view( -0.5, -13.0 ); curve fitting, curve fitter, boudaries, weighting MATLAB Answers — New Questions
Is it possible to Merge points from two accounts for same user ?
Hello ,
Suppose if a user has multiple Mathworks accounts and wants to merge both accounts. If yes, how does it work?
Is it also possible to merge answers reputation points obtained from two different Mathworks account for same user ?
Regards ,
VBBVHello ,
Suppose if a user has multiple Mathworks accounts and wants to merge both accounts. If yes, how does it work?
Is it also possible to merge answers reputation points obtained from two different Mathworks account for same user ?
Regards ,
VBBV Hello ,
Suppose if a user has multiple Mathworks accounts and wants to merge both accounts. If yes, how does it work?
Is it also possible to merge answers reputation points obtained from two different Mathworks account for same user ?
Regards ,
VBBV merge, accounts, answers, points MATLAB Answers — New Questions
1D gaussian filter for A-scans (OCT)
Hello all,
I would like to implement a gaussian filter on my A-scan (1D) from an OCT image (B-scan, 2D). The A-scan essentially represents how the intensity values fluctuate versus the depth.
I would appreciate your help.
Thank you :)Hello all,
I would like to implement a gaussian filter on my A-scan (1D) from an OCT image (B-scan, 2D). The A-scan essentially represents how the intensity values fluctuate versus the depth.
I would appreciate your help.
Thank you 🙂 Hello all,
I would like to implement a gaussian filter on my A-scan (1D) from an OCT image (B-scan, 2D). The A-scan essentially represents how the intensity values fluctuate versus the depth.
I would appreciate your help.
Thank you 🙂 1d, gauusian filter MATLAB Answers — New Questions
Did the default NumWorkers change for a local pool in R2024a?
My laptop has 14 physical cores, confirmed by feature(‘numCores’), and doing pool = parpool() starts a pool with 14 workers on R2023b. However, on R2024a on the same machine it starts a pool with only 6 workers, and feature(‘numCores’) still says there are 14 cores.
The documentation I can find still says that the default number of workers is equal to the number of physical cores. I can’t find any settings anywhere that are not set to the default values (or blank).
Is this an undocumented change in behavior? Or am I missing something?My laptop has 14 physical cores, confirmed by feature(‘numCores’), and doing pool = parpool() starts a pool with 14 workers on R2023b. However, on R2024a on the same machine it starts a pool with only 6 workers, and feature(‘numCores’) still says there are 14 cores.
The documentation I can find still says that the default number of workers is equal to the number of physical cores. I can’t find any settings anywhere that are not set to the default values (or blank).
Is this an undocumented change in behavior? Or am I missing something? My laptop has 14 physical cores, confirmed by feature(‘numCores’), and doing pool = parpool() starts a pool with 14 workers on R2023b. However, on R2024a on the same machine it starts a pool with only 6 workers, and feature(‘numCores’) still says there are 14 cores.
The documentation I can find still says that the default number of workers is equal to the number of physical cores. I can’t find any settings anywhere that are not set to the default values (or blank).
Is this an undocumented change in behavior? Or am I missing something? numworkers, physical cores MATLAB Answers — New Questions
Storing output values from a for loop into an “array”
Hello everyone,
I am trying to output the values that I get from a for loop into an "array". I am not sure how to store those "list of values" into an array
I have attached my code in reference:
Storing_Values_Into_Array.m
close all; clc;
% Value of j
j = 1i;
% For the region k_o < k_p < sqrt(u_r*e_r)*k_o
% Wavenumber in free space value = k_o
k = 2*pi;
% Permeability Value = u_r
u_r = 1;
% Permittivity Value e_r
e_r = 2.2;
% Value of kz_1
kz_1 = @(kp) sqrt((k).^2*e_r*u_r – (kp).^2);
% Value of kz_2
kz_2 = @(kp) sqrt((kp).^2 – (k).^2);
% Substrate heights = d
D = [0.02 0.04 0.06 0.08 0.10];
% Using a for loop to calculate the roots for T_M
% Solving for k_p values
for i=1:numel(D)
d=D(i);
% Equations for TM(kp)
T_M = @(kp) kz_1(kp).*sin(d.*kz_1(kp)) – e_r*kz_2(kp).*cos(d.*kz_1(kp));
kp_root=[fzero(T_M, [k , k*sqrt(e_r*u_r)])]
fplot(T_M,[k k*sqrt(e_r*u_r)], ‘LineWidth’,3); hold on
plot(kp_root,0,’o’,’MarkerSize’,8,’MarkerFaceColor’,’k’);
ylim([-5 5]);
xlim([k k*sqrt(e_r*u_r)]);
title(‘T_M vs k_p’)
ylabel(‘T_M’)
xlabel(‘k_p’)
grid on;
ax = gca;
ax.GridLineWidth = 2;
end; hold off
%{
What I am trying to do is store the values I get from "kp_root" in an
array called "kp_list" so I can use that array for calculations later on.
%}Hello everyone,
I am trying to output the values that I get from a for loop into an "array". I am not sure how to store those "list of values" into an array
I have attached my code in reference:
Storing_Values_Into_Array.m
close all; clc;
% Value of j
j = 1i;
% For the region k_o < k_p < sqrt(u_r*e_r)*k_o
% Wavenumber in free space value = k_o
k = 2*pi;
% Permeability Value = u_r
u_r = 1;
% Permittivity Value e_r
e_r = 2.2;
% Value of kz_1
kz_1 = @(kp) sqrt((k).^2*e_r*u_r – (kp).^2);
% Value of kz_2
kz_2 = @(kp) sqrt((kp).^2 – (k).^2);
% Substrate heights = d
D = [0.02 0.04 0.06 0.08 0.10];
% Using a for loop to calculate the roots for T_M
% Solving for k_p values
for i=1:numel(D)
d=D(i);
% Equations for TM(kp)
T_M = @(kp) kz_1(kp).*sin(d.*kz_1(kp)) – e_r*kz_2(kp).*cos(d.*kz_1(kp));
kp_root=[fzero(T_M, [k , k*sqrt(e_r*u_r)])]
fplot(T_M,[k k*sqrt(e_r*u_r)], ‘LineWidth’,3); hold on
plot(kp_root,0,’o’,’MarkerSize’,8,’MarkerFaceColor’,’k’);
ylim([-5 5]);
xlim([k k*sqrt(e_r*u_r)]);
title(‘T_M vs k_p’)
ylabel(‘T_M’)
xlabel(‘k_p’)
grid on;
ax = gca;
ax.GridLineWidth = 2;
end; hold off
%{
What I am trying to do is store the values I get from "kp_root" in an
array called "kp_list" so I can use that array for calculations later on.
%} Hello everyone,
I am trying to output the values that I get from a for loop into an "array". I am not sure how to store those "list of values" into an array
I have attached my code in reference:
Storing_Values_Into_Array.m
close all; clc;
% Value of j
j = 1i;
% For the region k_o < k_p < sqrt(u_r*e_r)*k_o
% Wavenumber in free space value = k_o
k = 2*pi;
% Permeability Value = u_r
u_r = 1;
% Permittivity Value e_r
e_r = 2.2;
% Value of kz_1
kz_1 = @(kp) sqrt((k).^2*e_r*u_r – (kp).^2);
% Value of kz_2
kz_2 = @(kp) sqrt((kp).^2 – (k).^2);
% Substrate heights = d
D = [0.02 0.04 0.06 0.08 0.10];
% Using a for loop to calculate the roots for T_M
% Solving for k_p values
for i=1:numel(D)
d=D(i);
% Equations for TM(kp)
T_M = @(kp) kz_1(kp).*sin(d.*kz_1(kp)) – e_r*kz_2(kp).*cos(d.*kz_1(kp));
kp_root=[fzero(T_M, [k , k*sqrt(e_r*u_r)])]
fplot(T_M,[k k*sqrt(e_r*u_r)], ‘LineWidth’,3); hold on
plot(kp_root,0,’o’,’MarkerSize’,8,’MarkerFaceColor’,’k’);
ylim([-5 5]);
xlim([k k*sqrt(e_r*u_r)]);
title(‘T_M vs k_p’)
ylabel(‘T_M’)
xlabel(‘k_p’)
grid on;
ax = gca;
ax.GridLineWidth = 2;
end; hold off
%{
What I am trying to do is store the values I get from "kp_root" in an
array called "kp_list" so I can use that array for calculations later on.
%} array, arrays, for loop MATLAB Answers — New Questions
How to Convert Entity Attribute Buses into Signal for RL Agent Observation Input?
Dear Matlab Simulink Experts,
I am having troubles with my model, right now I have designed a model to emulate a single part that goes through operations and maintenance procedures. I am utilizing bus elements in an entity generator, the next step of my model is to connect the intended output of the model from entity server ‘damage’ to an observation input port of the RL agent block. The RL agent block will then produce an output through the action port, connected again to an option of entity servers. How do I convert and entity attribute into a signal that the RL agent can receive, and vice versa, how do I revert back the signal into an entity attribute, after the RL agent has made its decision? Or what are other options other than converting entities to signal?
The attempts I have made were using a signal conversion block, and a Matlab function block, but my efforts hasn’t been rewarding so far.
Your help would be very much appreciated. Attached are my files:
ModelV1.slx (the simulink model)
BusProfile.mat (the bus elements containing the entity attribute)
initialize.m (to initialize the bus editor)
RLScriptV4.mlx (the Reinforcement Learning script)
And this is the error generated:
Thank you in advance.Dear Matlab Simulink Experts,
I am having troubles with my model, right now I have designed a model to emulate a single part that goes through operations and maintenance procedures. I am utilizing bus elements in an entity generator, the next step of my model is to connect the intended output of the model from entity server ‘damage’ to an observation input port of the RL agent block. The RL agent block will then produce an output through the action port, connected again to an option of entity servers. How do I convert and entity attribute into a signal that the RL agent can receive, and vice versa, how do I revert back the signal into an entity attribute, after the RL agent has made its decision? Or what are other options other than converting entities to signal?
The attempts I have made were using a signal conversion block, and a Matlab function block, but my efforts hasn’t been rewarding so far.
Your help would be very much appreciated. Attached are my files:
ModelV1.slx (the simulink model)
BusProfile.mat (the bus elements containing the entity attribute)
initialize.m (to initialize the bus editor)
RLScriptV4.mlx (the Reinforcement Learning script)
And this is the error generated:
Thank you in advance. Dear Matlab Simulink Experts,
I am having troubles with my model, right now I have designed a model to emulate a single part that goes through operations and maintenance procedures. I am utilizing bus elements in an entity generator, the next step of my model is to connect the intended output of the model from entity server ‘damage’ to an observation input port of the RL agent block. The RL agent block will then produce an output through the action port, connected again to an option of entity servers. How do I convert and entity attribute into a signal that the RL agent can receive, and vice versa, how do I revert back the signal into an entity attribute, after the RL agent has made its decision? Or what are other options other than converting entities to signal?
The attempts I have made were using a signal conversion block, and a Matlab function block, but my efforts hasn’t been rewarding so far.
Your help would be very much appreciated. Attached are my files:
ModelV1.slx (the simulink model)
BusProfile.mat (the bus elements containing the entity attribute)
initialize.m (to initialize the bus editor)
RLScriptV4.mlx (the Reinforcement Learning script)
And this is the error generated:
Thank you in advance. matlab, simulink, matlab function, signal, convert MATLAB Answers — New Questions