Category: Matlab
Category Archives: Matlab
binwin64nativejava_engine_core.dll: Can’t find dependent libraries
Start MATLAB from Java synchronously.
import com.mathworks.engine.*;
public class StartMatlab {
public static void main(String[] args) throws Exception {
MatlabEngine eng = MatlabEngine.startMatlab();
…
eng.close();
}
}
java.lang.UnsatisfiedLinkError:<matlabroot>binwin64nativejava_engine_core.dll: Can’t find dependent libraries。
Fixed missing files using dependencywalker, but still reported an error. System environment variables have been added. How can I resolve this issueStart MATLAB from Java synchronously.
import com.mathworks.engine.*;
public class StartMatlab {
public static void main(String[] args) throws Exception {
MatlabEngine eng = MatlabEngine.startMatlab();
…
eng.close();
}
}
java.lang.UnsatisfiedLinkError:<matlabroot>binwin64nativejava_engine_core.dll: Can’t find dependent libraries。
Fixed missing files using dependencywalker, but still reported an error. System environment variables have been added. How can I resolve this issue Start MATLAB from Java synchronously.
import com.mathworks.engine.*;
public class StartMatlab {
public static void main(String[] args) throws Exception {
MatlabEngine eng = MatlabEngine.startMatlab();
…
eng.close();
}
}
java.lang.UnsatisfiedLinkError:<matlabroot>binwin64nativejava_engine_core.dll: Can’t find dependent libraries。
Fixed missing files using dependencywalker, but still reported an error. System environment variables have been added. How can I resolve this issue matlab/matlab-engine-api-for-java MATLAB Answers — New Questions
Test Manager: No block called ‘From1’ could be found.
Hello,
I’m working on a model and try to write test through Test Manager.
The model is updating without error => OK
When I run the test in Test Manager, I can see the following step in the Simulink test harness window:
…
Updating library link blocks: Completed
( It updates the 4 referenced model,)
Compiling: Refreshing bus cache: Completed
Compiling: Evaluating block parameters: Completed
Initializing
Ready
Then it stops, and in the Test Manager window, the following error appears:
Cause of Failure: Erros running test case
Invalid Simulink object name: Toto_Sequence_Harness/From1.
No block called ‘From1’ could be found.
As mentionned in another post, a space character can be the origin of the error. I look for ‘ From1’ (sapce before) and ‘From1 ‘ (space after) but Simulink didn’t find any.
In the model there are 1602 ‘From1’ (without space, it includes ‘From10’, ‘From11’…).
How can I have more precision regarding error location ?
How can this error can be solved ?
Thanks in advance,
ChristopheHello,
I’m working on a model and try to write test through Test Manager.
The model is updating without error => OK
When I run the test in Test Manager, I can see the following step in the Simulink test harness window:
…
Updating library link blocks: Completed
( It updates the 4 referenced model,)
Compiling: Refreshing bus cache: Completed
Compiling: Evaluating block parameters: Completed
Initializing
Ready
Then it stops, and in the Test Manager window, the following error appears:
Cause of Failure: Erros running test case
Invalid Simulink object name: Toto_Sequence_Harness/From1.
No block called ‘From1’ could be found.
As mentionned in another post, a space character can be the origin of the error. I look for ‘ From1’ (sapce before) and ‘From1 ‘ (space after) but Simulink didn’t find any.
In the model there are 1602 ‘From1’ (without space, it includes ‘From10’, ‘From11’…).
How can I have more precision regarding error location ?
How can this error can be solved ?
Thanks in advance,
Christophe Hello,
I’m working on a model and try to write test through Test Manager.
The model is updating without error => OK
When I run the test in Test Manager, I can see the following step in the Simulink test harness window:
…
Updating library link blocks: Completed
( It updates the 4 referenced model,)
Compiling: Refreshing bus cache: Completed
Compiling: Evaluating block parameters: Completed
Initializing
Ready
Then it stops, and in the Test Manager window, the following error appears:
Cause of Failure: Erros running test case
Invalid Simulink object name: Toto_Sequence_Harness/From1.
No block called ‘From1’ could be found.
As mentionned in another post, a space character can be the origin of the error. I look for ‘ From1’ (sapce before) and ‘From1 ‘ (space after) but Simulink didn’t find any.
In the model there are 1602 ‘From1’ (without space, it includes ‘From10’, ‘From11’…).
How can I have more precision regarding error location ?
How can this error can be solved ?
Thanks in advance,
Christophe no block called could be found, invalid simulink object name MATLAB Answers — New Questions
Simscape begins simulation outside of joint limits
I am trying to model a closed kinematic chain in simulink, and i get problems with having meaningful initialization. Matlab ignores the joint limits for some joints.
What i have done:
I imported a urdf (which it self doesn’t close the chain) and added a bushing joint to close the chain at the required point). There are 5 links, but only three of them are independent (and actuated), thus i have set a position target to those with high priority (to set the desired initial conditions). In the bushing joint, in all the DOFs i want to constraint i have set a position target to zero with low priority.
Thus, the 2 unactuated joints do not have a specified position target and are passive joints.
Problem
When i launch the simulation at specified initial conditions, matlab ignores the limits of the unactuated joint to close the chain, even though there is a solution. See below: (1.22 rad ~= 70 deg)
This causes the closed chain to get in a weird configuration, instead of the sketched one:
Also, the next step in the simulation, puts the configuration in the acceptable limits:
So it is like the limits are not respected when simscape tries to close the chainI am trying to model a closed kinematic chain in simulink, and i get problems with having meaningful initialization. Matlab ignores the joint limits for some joints.
What i have done:
I imported a urdf (which it self doesn’t close the chain) and added a bushing joint to close the chain at the required point). There are 5 links, but only three of them are independent (and actuated), thus i have set a position target to those with high priority (to set the desired initial conditions). In the bushing joint, in all the DOFs i want to constraint i have set a position target to zero with low priority.
Thus, the 2 unactuated joints do not have a specified position target and are passive joints.
Problem
When i launch the simulation at specified initial conditions, matlab ignores the limits of the unactuated joint to close the chain, even though there is a solution. See below: (1.22 rad ~= 70 deg)
This causes the closed chain to get in a weird configuration, instead of the sketched one:
Also, the next step in the simulation, puts the configuration in the acceptable limits:
So it is like the limits are not respected when simscape tries to close the chain I am trying to model a closed kinematic chain in simulink, and i get problems with having meaningful initialization. Matlab ignores the joint limits for some joints.
What i have done:
I imported a urdf (which it self doesn’t close the chain) and added a bushing joint to close the chain at the required point). There are 5 links, but only three of them are independent (and actuated), thus i have set a position target to those with high priority (to set the desired initial conditions). In the bushing joint, in all the DOFs i want to constraint i have set a position target to zero with low priority.
Thus, the 2 unactuated joints do not have a specified position target and are passive joints.
Problem
When i launch the simulation at specified initial conditions, matlab ignores the limits of the unactuated joint to close the chain, even though there is a solution. See below: (1.22 rad ~= 70 deg)
This causes the closed chain to get in a weird configuration, instead of the sketched one:
Also, the next step in the simulation, puts the configuration in the acceptable limits:
So it is like the limits are not respected when simscape tries to close the chain simulink, simscape, simulation MATLAB Answers — New Questions
cgs algorithm not working with function defined system matrix
%% in following code i am trying to get forward diffraction using a point spread function given by psf
% whole pipeline is given as Au=uin, in which A=psf * original image.*u, u is to be estimated and uin is input .
% A is defined via a function which doe convolution between psf and elemsnt wise multiplication of original image and u.
%i tried to implement it but getting error as "Arrays have incompatile size for this opeartion , can someone hlep me rectify it.
%% this code contains only conjugate gradient based method for image reconstruction
clc
clear all;
close all;
% Load the original image
original_image = im2double(imread(‘cameraman.tif’));
N=size(original_image,1);
psf = green_f1(N);
% Normalize the PSF
psf = psf / sum(psf(:));
incident_field=ones(N,N);
I=eye(size(original_image));
I=I(:);
% Define the system matrix
A = @(x) convolution2(x.*original_image, psf);
At = @(x) convolution2(x, conj(flipud(fliplr(psf))));
% Define parameters for conjugate gradient method
max_iter = 100; % Maximum number of iterations
tol = 1e-8; % Tolerance for convergence
% Conjugate gradient method
b=incident_field(:);
%b = degraded_image(:);
x0=rand(N,N);
x0=x0(:);
%x0 = estimated_image(:);
[x, ~, relres, iter] = cgs(A, b, tol, max_iter, [], [], x0);
% Reshape the result to image size
estimated_image = reshape(x, size(degraded_image));
% Display the deconvolved image
figure;
imshow(estimated_image); title(‘Deconvolved Image’);
% Helper function for 2D convolution
function y = convolution2(x, h)
y = ifft2(fft2(x) .* fft2(h, size(x,1), size(x,2)));
end
function G=green_f1(N) ;
% Input parameters
% N=512; % Number of pixels
L=10; %e-6; % Length of the field of view (in meters)
rad=30e-6; % Radius of aperture (in meters)
lambda=0.630;%e-9; % Wavelength of light (in meters)
z=100e-6; %Propagation distance (in meters)
% Coordinate vectors/grids
dx=L/N; % Length of one pixel
x=-L/2 : dx : L/2-dx; % Coordinate vector (in meters)
fx=-1/(2*dx):1/L:1/(2*dx)-1/L; % Spatial frequency vector (in 1/meters)
[X,Y]=meshgrid(x,x); % Coordinate grids (real space)
[FX,FY]=meshgrid(fx,fx); % Coordinate grids (Fourier space)
% Define aperture
R=sqrt(X.^2+Y.^2); % Radial coordinate
R(R==0) = 1; % Avoid division by zero
%Aperture=double(R<rad); % Aperture
nb=1.351; % refractive index background
kg=2*pi/lambda; % wavenumber
%p=parpool(4);
nn=size(R,2);
for i=1:size(R,1)
%for i=1:size(r,1)
for j=1:nn
G(i,j)= (exp(1i*(kg*R(i,j)*nb)))/(4*pi*R(i,j));
end
end
end%% in following code i am trying to get forward diffraction using a point spread function given by psf
% whole pipeline is given as Au=uin, in which A=psf * original image.*u, u is to be estimated and uin is input .
% A is defined via a function which doe convolution between psf and elemsnt wise multiplication of original image and u.
%i tried to implement it but getting error as "Arrays have incompatile size for this opeartion , can someone hlep me rectify it.
%% this code contains only conjugate gradient based method for image reconstruction
clc
clear all;
close all;
% Load the original image
original_image = im2double(imread(‘cameraman.tif’));
N=size(original_image,1);
psf = green_f1(N);
% Normalize the PSF
psf = psf / sum(psf(:));
incident_field=ones(N,N);
I=eye(size(original_image));
I=I(:);
% Define the system matrix
A = @(x) convolution2(x.*original_image, psf);
At = @(x) convolution2(x, conj(flipud(fliplr(psf))));
% Define parameters for conjugate gradient method
max_iter = 100; % Maximum number of iterations
tol = 1e-8; % Tolerance for convergence
% Conjugate gradient method
b=incident_field(:);
%b = degraded_image(:);
x0=rand(N,N);
x0=x0(:);
%x0 = estimated_image(:);
[x, ~, relres, iter] = cgs(A, b, tol, max_iter, [], [], x0);
% Reshape the result to image size
estimated_image = reshape(x, size(degraded_image));
% Display the deconvolved image
figure;
imshow(estimated_image); title(‘Deconvolved Image’);
% Helper function for 2D convolution
function y = convolution2(x, h)
y = ifft2(fft2(x) .* fft2(h, size(x,1), size(x,2)));
end
function G=green_f1(N) ;
% Input parameters
% N=512; % Number of pixels
L=10; %e-6; % Length of the field of view (in meters)
rad=30e-6; % Radius of aperture (in meters)
lambda=0.630;%e-9; % Wavelength of light (in meters)
z=100e-6; %Propagation distance (in meters)
% Coordinate vectors/grids
dx=L/N; % Length of one pixel
x=-L/2 : dx : L/2-dx; % Coordinate vector (in meters)
fx=-1/(2*dx):1/L:1/(2*dx)-1/L; % Spatial frequency vector (in 1/meters)
[X,Y]=meshgrid(x,x); % Coordinate grids (real space)
[FX,FY]=meshgrid(fx,fx); % Coordinate grids (Fourier space)
% Define aperture
R=sqrt(X.^2+Y.^2); % Radial coordinate
R(R==0) = 1; % Avoid division by zero
%Aperture=double(R<rad); % Aperture
nb=1.351; % refractive index background
kg=2*pi/lambda; % wavenumber
%p=parpool(4);
nn=size(R,2);
for i=1:size(R,1)
%for i=1:size(r,1)
for j=1:nn
G(i,j)= (exp(1i*(kg*R(i,j)*nb)))/(4*pi*R(i,j));
end
end
end %% in following code i am trying to get forward diffraction using a point spread function given by psf
% whole pipeline is given as Au=uin, in which A=psf * original image.*u, u is to be estimated and uin is input .
% A is defined via a function which doe convolution between psf and elemsnt wise multiplication of original image and u.
%i tried to implement it but getting error as "Arrays have incompatile size for this opeartion , can someone hlep me rectify it.
%% this code contains only conjugate gradient based method for image reconstruction
clc
clear all;
close all;
% Load the original image
original_image = im2double(imread(‘cameraman.tif’));
N=size(original_image,1);
psf = green_f1(N);
% Normalize the PSF
psf = psf / sum(psf(:));
incident_field=ones(N,N);
I=eye(size(original_image));
I=I(:);
% Define the system matrix
A = @(x) convolution2(x.*original_image, psf);
At = @(x) convolution2(x, conj(flipud(fliplr(psf))));
% Define parameters for conjugate gradient method
max_iter = 100; % Maximum number of iterations
tol = 1e-8; % Tolerance for convergence
% Conjugate gradient method
b=incident_field(:);
%b = degraded_image(:);
x0=rand(N,N);
x0=x0(:);
%x0 = estimated_image(:);
[x, ~, relres, iter] = cgs(A, b, tol, max_iter, [], [], x0);
% Reshape the result to image size
estimated_image = reshape(x, size(degraded_image));
% Display the deconvolved image
figure;
imshow(estimated_image); title(‘Deconvolved Image’);
% Helper function for 2D convolution
function y = convolution2(x, h)
y = ifft2(fft2(x) .* fft2(h, size(x,1), size(x,2)));
end
function G=green_f1(N) ;
% Input parameters
% N=512; % Number of pixels
L=10; %e-6; % Length of the field of view (in meters)
rad=30e-6; % Radius of aperture (in meters)
lambda=0.630;%e-9; % Wavelength of light (in meters)
z=100e-6; %Propagation distance (in meters)
% Coordinate vectors/grids
dx=L/N; % Length of one pixel
x=-L/2 : dx : L/2-dx; % Coordinate vector (in meters)
fx=-1/(2*dx):1/L:1/(2*dx)-1/L; % Spatial frequency vector (in 1/meters)
[X,Y]=meshgrid(x,x); % Coordinate grids (real space)
[FX,FY]=meshgrid(fx,fx); % Coordinate grids (Fourier space)
% Define aperture
R=sqrt(X.^2+Y.^2); % Radial coordinate
R(R==0) = 1; % Avoid division by zero
%Aperture=double(R<rad); % Aperture
nb=1.351; % refractive index background
kg=2*pi/lambda; % wavenumber
%p=parpool(4);
nn=size(R,2);
for i=1:size(R,1)
%for i=1:size(r,1)
for j=1:nn
G(i,j)= (exp(1i*(kg*R(i,j)*nb)))/(4*pi*R(i,j));
end
end
end optimization using cgs, matlab MATLAB Answers — New Questions
Can I charactrize LFP cell in “Characterize Battery Cell for Electric Vehicles”?
Can I charactrize LFP cell in "Characterize Battery Cell for Electric Vehicles"?Can I charactrize LFP cell in "Characterize Battery Cell for Electric Vehicles"? Can I charactrize LFP cell in "Characterize Battery Cell for Electric Vehicles"? battery MATLAB Answers — New Questions
datetime adjustment in x-axis plot
Hello everyone,
i want to adjust my datetime x-axis in pcolor plot in matlab but i tried but it doesnt working. I add my data here and code also
x = [01-01-2021 00:00 01-01-2021 00:14 01-01-2021 00:28 01-02-2021 00:42] like this one year data for 14 min intervel
y = [10.23 11.16 12.19 13.31 14.54 15.88 17.35 18.96 20.72 22.66 24.77 27.1 29.65 32.45 35.53 38.92 42.65 46.77 51.32]
z = [2.27E+03 3.94E+03 4.48E+03 6.26E+03 3.18E+03 3.78E+03 5.37E+03 5.60E+03 6.35E+03 8.47E+03 1.05E+04 1.05E+04
1.36E+04 1.12E+04 8.48E+03 3.96E+03 5.84E+03 4.55E+03 3.65E+03 6.17E+03 7.48E+03 6.98E+03 9.84E+03 1.11E+04
5.72E+04 6.90E+04 5.64E+04 4.71E+04 1.94E+04 6.37E+03 6.59E+03 6.89E+03 8.81E+03 9.70E+03 8.11E+03 9.59E+03
1.26E+04 1.34E+04 1.69E+04 1.99E+04 2.18E+04 2.62E+04 2.98E+04 9.09E+03 5.16E+03 8.73E+03 3.96E+03 4.95E+03
5.16E+03 4.06E+03 4.24E+03 6.17E+03 7.99E+03 8.20E+03 6.68E+03 1.07E+04 1.24E+04 1.36E+04 1.78E+04 1.89E+04]
Code:1
pcolor(datenum(x),y,z)
shading interp
a = gca;
set(a,’XTick’);
datetick(‘x’,’dd-mmm HH:MM’,’keepticks’,’keeplimits’); # tried this it is showing only few date points
(or)
datetick(‘x’,’dd-mmm HH:MM’,’keepticks’); # tried this it is also showing only few date points
Code:2
pcolor(datenum(date1),y,z)
a = gca;
a.XTick = datenum(x);
a.XTickLabel = datestr(datenum(x)); # in this code it is taking as a text and displaying all the points
I just want to show in my x-axis like Jan, Feb, Mar, till Dec or daily one point or 10 days once one point like Jan 10 Jan 20 Jan 30 Feb 10 etc.
I tried alot but i couldnt able to make this i am waiting for the help from the experts.
Thank you in advance.Hello everyone,
i want to adjust my datetime x-axis in pcolor plot in matlab but i tried but it doesnt working. I add my data here and code also
x = [01-01-2021 00:00 01-01-2021 00:14 01-01-2021 00:28 01-02-2021 00:42] like this one year data for 14 min intervel
y = [10.23 11.16 12.19 13.31 14.54 15.88 17.35 18.96 20.72 22.66 24.77 27.1 29.65 32.45 35.53 38.92 42.65 46.77 51.32]
z = [2.27E+03 3.94E+03 4.48E+03 6.26E+03 3.18E+03 3.78E+03 5.37E+03 5.60E+03 6.35E+03 8.47E+03 1.05E+04 1.05E+04
1.36E+04 1.12E+04 8.48E+03 3.96E+03 5.84E+03 4.55E+03 3.65E+03 6.17E+03 7.48E+03 6.98E+03 9.84E+03 1.11E+04
5.72E+04 6.90E+04 5.64E+04 4.71E+04 1.94E+04 6.37E+03 6.59E+03 6.89E+03 8.81E+03 9.70E+03 8.11E+03 9.59E+03
1.26E+04 1.34E+04 1.69E+04 1.99E+04 2.18E+04 2.62E+04 2.98E+04 9.09E+03 5.16E+03 8.73E+03 3.96E+03 4.95E+03
5.16E+03 4.06E+03 4.24E+03 6.17E+03 7.99E+03 8.20E+03 6.68E+03 1.07E+04 1.24E+04 1.36E+04 1.78E+04 1.89E+04]
Code:1
pcolor(datenum(x),y,z)
shading interp
a = gca;
set(a,’XTick’);
datetick(‘x’,’dd-mmm HH:MM’,’keepticks’,’keeplimits’); # tried this it is showing only few date points
(or)
datetick(‘x’,’dd-mmm HH:MM’,’keepticks’); # tried this it is also showing only few date points
Code:2
pcolor(datenum(date1),y,z)
a = gca;
a.XTick = datenum(x);
a.XTickLabel = datestr(datenum(x)); # in this code it is taking as a text and displaying all the points
I just want to show in my x-axis like Jan, Feb, Mar, till Dec or daily one point or 10 days once one point like Jan 10 Jan 20 Jan 30 Feb 10 etc.
I tried alot but i couldnt able to make this i am waiting for the help from the experts.
Thank you in advance. Hello everyone,
i want to adjust my datetime x-axis in pcolor plot in matlab but i tried but it doesnt working. I add my data here and code also
x = [01-01-2021 00:00 01-01-2021 00:14 01-01-2021 00:28 01-02-2021 00:42] like this one year data for 14 min intervel
y = [10.23 11.16 12.19 13.31 14.54 15.88 17.35 18.96 20.72 22.66 24.77 27.1 29.65 32.45 35.53 38.92 42.65 46.77 51.32]
z = [2.27E+03 3.94E+03 4.48E+03 6.26E+03 3.18E+03 3.78E+03 5.37E+03 5.60E+03 6.35E+03 8.47E+03 1.05E+04 1.05E+04
1.36E+04 1.12E+04 8.48E+03 3.96E+03 5.84E+03 4.55E+03 3.65E+03 6.17E+03 7.48E+03 6.98E+03 9.84E+03 1.11E+04
5.72E+04 6.90E+04 5.64E+04 4.71E+04 1.94E+04 6.37E+03 6.59E+03 6.89E+03 8.81E+03 9.70E+03 8.11E+03 9.59E+03
1.26E+04 1.34E+04 1.69E+04 1.99E+04 2.18E+04 2.62E+04 2.98E+04 9.09E+03 5.16E+03 8.73E+03 3.96E+03 4.95E+03
5.16E+03 4.06E+03 4.24E+03 6.17E+03 7.99E+03 8.20E+03 6.68E+03 1.07E+04 1.24E+04 1.36E+04 1.78E+04 1.89E+04]
Code:1
pcolor(datenum(x),y,z)
shading interp
a = gca;
set(a,’XTick’);
datetick(‘x’,’dd-mmm HH:MM’,’keepticks’,’keeplimits’); # tried this it is showing only few date points
(or)
datetick(‘x’,’dd-mmm HH:MM’,’keepticks’); # tried this it is also showing only few date points
Code:2
pcolor(datenum(date1),y,z)
a = gca;
a.XTick = datenum(x);
a.XTickLabel = datestr(datenum(x)); # in this code it is taking as a text and displaying all the points
I just want to show in my x-axis like Jan, Feb, Mar, till Dec or daily one point or 10 days once one point like Jan 10 Jan 20 Jan 30 Feb 10 etc.
I tried alot but i couldnt able to make this i am waiting for the help from the experts.
Thank you in advance. matlab, matlab code, matlab coder MATLAB Answers — New Questions
How to specify column names by writematrix function in Appdesigner?
I’m working in app designer. I store 4 columns of data to an excell file.
I have already specified the column names in excell and am using "VariableNamingRule", "preserve". But the column names are transformed into Var1, Var2 etc. or all column names are disappeared.
How do l solve this problem?
Thanks in advance!I’m working in app designer. I store 4 columns of data to an excell file.
I have already specified the column names in excell and am using "VariableNamingRule", "preserve". But the column names are transformed into Var1, Var2 etc. or all column names are disappeared.
How do l solve this problem?
Thanks in advance! I’m working in app designer. I store 4 columns of data to an excell file.
I have already specified the column names in excell and am using "VariableNamingRule", "preserve". But the column names are transformed into Var1, Var2 etc. or all column names are disappeared.
How do l solve this problem?
Thanks in advance! matrix, excel, export, data MATLAB Answers — New Questions
Is fftshift not working here ?
I have a set of data from a thermocouple
I have this data in the form of a text file and importated it into matlab without issue
When trying to apply an fft() to this data set the output seemed fine
But when trying to apply an fftshift() it seemed to not work
in the sense that it produced a graph which looked identical to just the plotting of the voltage against time
This is the code showing how the shiftedFFT is identitical to the plotting of the voltage against time
I have a sneaking suspsion that im supposed to apply the fftshift to the data ive already applied the fft to but im not sure
clear,clearvars, close,clc
Scope_Data = load("Data from scope 2.txt");
Time_Data = Scope_Data(:,1);
Volatge_Data = Scope_Data(:,2);
Real_Data = real(fftshift(Volatge_Data,8192));
Img_Data = imag(fftshift(Volatge_Data,8192));
subplot(2,3,1)
plot(Real_Data)
xlabel("Frequency Index")
ylabel("Real Part of FFT of Signal")
title("Real_fftshift")
subplot(2,2,2)
plot(Img_Data)
xlabel("Frequency Index")
ylabel("Img Part of FFT of Signal")
title("Img_fftshift")
subplot(2,3,1)
plot(Real_Data)
xlabel("Frequency Index")
ylabel("Real Part of FFT of Signal")
title("Real_fftshift")
subplot(2,2,2)
plot(Img_Data)
xlabel("Frequency Index")
ylabel("Img Part of FFT of Signal")
title("Img_fftshift")
subplot(2,2,3)
plot(Volatge_Data)I have a set of data from a thermocouple
I have this data in the form of a text file and importated it into matlab without issue
When trying to apply an fft() to this data set the output seemed fine
But when trying to apply an fftshift() it seemed to not work
in the sense that it produced a graph which looked identical to just the plotting of the voltage against time
This is the code showing how the shiftedFFT is identitical to the plotting of the voltage against time
I have a sneaking suspsion that im supposed to apply the fftshift to the data ive already applied the fft to but im not sure
clear,clearvars, close,clc
Scope_Data = load("Data from scope 2.txt");
Time_Data = Scope_Data(:,1);
Volatge_Data = Scope_Data(:,2);
Real_Data = real(fftshift(Volatge_Data,8192));
Img_Data = imag(fftshift(Volatge_Data,8192));
subplot(2,3,1)
plot(Real_Data)
xlabel("Frequency Index")
ylabel("Real Part of FFT of Signal")
title("Real_fftshift")
subplot(2,2,2)
plot(Img_Data)
xlabel("Frequency Index")
ylabel("Img Part of FFT of Signal")
title("Img_fftshift")
subplot(2,3,1)
plot(Real_Data)
xlabel("Frequency Index")
ylabel("Real Part of FFT of Signal")
title("Real_fftshift")
subplot(2,2,2)
plot(Img_Data)
xlabel("Frequency Index")
ylabel("Img Part of FFT of Signal")
title("Img_fftshift")
subplot(2,2,3)
plot(Volatge_Data) I have a set of data from a thermocouple
I have this data in the form of a text file and importated it into matlab without issue
When trying to apply an fft() to this data set the output seemed fine
But when trying to apply an fftshift() it seemed to not work
in the sense that it produced a graph which looked identical to just the plotting of the voltage against time
This is the code showing how the shiftedFFT is identitical to the plotting of the voltage against time
I have a sneaking suspsion that im supposed to apply the fftshift to the data ive already applied the fft to but im not sure
clear,clearvars, close,clc
Scope_Data = load("Data from scope 2.txt");
Time_Data = Scope_Data(:,1);
Volatge_Data = Scope_Data(:,2);
Real_Data = real(fftshift(Volatge_Data,8192));
Img_Data = imag(fftshift(Volatge_Data,8192));
subplot(2,3,1)
plot(Real_Data)
xlabel("Frequency Index")
ylabel("Real Part of FFT of Signal")
title("Real_fftshift")
subplot(2,2,2)
plot(Img_Data)
xlabel("Frequency Index")
ylabel("Img Part of FFT of Signal")
title("Img_fftshift")
subplot(2,3,1)
plot(Real_Data)
xlabel("Frequency Index")
ylabel("Real Part of FFT of Signal")
title("Real_fftshift")
subplot(2,2,2)
plot(Img_Data)
xlabel("Frequency Index")
ylabel("Img Part of FFT of Signal")
title("Img_fftshift")
subplot(2,2,3)
plot(Volatge_Data) fft, fftshift MATLAB Answers — New Questions
How to supress the Pop-Up dialog window ?
I receive a pop up dialog box as soon as I start the MATLAB. How do I disable it? I use latest version of MATLAB, 2023-AI receive a pop up dialog box as soon as I start the MATLAB. How do I disable it? I use latest version of MATLAB, 2023-A I receive a pop up dialog box as soon as I start the MATLAB. How do I disable it? I use latest version of MATLAB, 2023-A matlab MATLAB Answers — New Questions
My matlab fails to start. Assertion failed error message.
I’m unable to open my Matlab program (version 2017A, Windows 10 Home OS). I’m getting an error message while starting Matlab from Microsoft Visual C++ Runtime library:
Assertion Failed!
Program: C:Program
FilesMATLABR2017Abinwin64libmwfl.dll
File: b:matlabsrcmvmdetailmvmlocalboundmethods.cpp
Line: 114
Expression: Failed to open local mvm library: A dynamic link library (DLL) initialization routine failed.
Function: void__cdecl
mvm::detatil::MvmLocalBoundMethods::initMethods(constbool)
For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts
(Press Retry to debug the application – JIT must be enabled)
Please help me with this issue.
Thank you,
AnirudhI’m unable to open my Matlab program (version 2017A, Windows 10 Home OS). I’m getting an error message while starting Matlab from Microsoft Visual C++ Runtime library:
Assertion Failed!
Program: C:Program
FilesMATLABR2017Abinwin64libmwfl.dll
File: b:matlabsrcmvmdetailmvmlocalboundmethods.cpp
Line: 114
Expression: Failed to open local mvm library: A dynamic link library (DLL) initialization routine failed.
Function: void__cdecl
mvm::detatil::MvmLocalBoundMethods::initMethods(constbool)
For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts
(Press Retry to debug the application – JIT must be enabled)
Please help me with this issue.
Thank you,
Anirudh I’m unable to open my Matlab program (version 2017A, Windows 10 Home OS). I’m getting an error message while starting Matlab from Microsoft Visual C++ Runtime library:
Assertion Failed!
Program: C:Program
FilesMATLABR2017Abinwin64libmwfl.dll
File: b:matlabsrcmvmdetailmvmlocalboundmethods.cpp
Line: 114
Expression: Failed to open local mvm library: A dynamic link library (DLL) initialization routine failed.
Function: void__cdecl
mvm::detatil::MvmLocalBoundMethods::initMethods(constbool)
For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts
(Press Retry to debug the application – JIT must be enabled)
Please help me with this issue.
Thank you,
Anirudh assertion failed error, unable to start matlab MATLAB Answers — New Questions
Every single time I want to publish to PDF in any one of my scripts I get this error: “Loading remote resource not allowed”
This is the error in the command window:
Loading remote resource not allowed. Remote resource: http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd
This error happened around the time I copy and pasted code from Sublime. I have engineering finals coming up so I would appreciate any help. Also this is an error for every single script I try to publish to PDF in Matlab online.This is the error in the command window:
Loading remote resource not allowed. Remote resource: http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd
This error happened around the time I copy and pasted code from Sublime. I have engineering finals coming up so I would appreciate any help. Also this is an error for every single script I try to publish to PDF in Matlab online. This is the error in the command window:
Loading remote resource not allowed. Remote resource: http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd
This error happened around the time I copy and pasted code from Sublime. I have engineering finals coming up so I would appreciate any help. Also this is an error for every single script I try to publish to PDF in Matlab online. xml, matlab online, publish, pdf, student, engineering MATLAB Answers — New Questions
How can I plot graph with lines of different color each using for loop?
Hello,
I draw the graph v vs t using for loop and graph should include multiple line for different dt. I try to let each lines have different color and add legend, but I got same color line and legend for last loop only. Code I write is:
%initial condition
uold=0;
dt=0.01;
i=0;%count
j=1;
frhs=@(t,v) (1/1000)*(1064*t*exp(-0.95*v)-135*v^2)-9.81;
dt=[0.001, 0.005, 0.01, 0.05, 0.1, 0.3];
for j=1:length(dt)
for told=0:dt:60
i=i+1;
[unew] = RK4(told,uold,frhs,dt(j));
uold=unew;
x(i)=told;
y(i)=unew;
end
fprintf(‘v(60) = %f when dt = %f n’,unew,dt(j))
plot(x,y,’color’,rand(1,3))
legend(sprintf(‘dt=%f’,dt(j)))
end
xlabel(‘time’)
ylabel(‘vertical velocity’)
I would like to get graph which different color line with each dt and legend to show which color is which dt.
When I run the code, color is random every time I run, but all lines are same color and legend has only for dt=0.3.Hello,
I draw the graph v vs t using for loop and graph should include multiple line for different dt. I try to let each lines have different color and add legend, but I got same color line and legend for last loop only. Code I write is:
%initial condition
uold=0;
dt=0.01;
i=0;%count
j=1;
frhs=@(t,v) (1/1000)*(1064*t*exp(-0.95*v)-135*v^2)-9.81;
dt=[0.001, 0.005, 0.01, 0.05, 0.1, 0.3];
for j=1:length(dt)
for told=0:dt:60
i=i+1;
[unew] = RK4(told,uold,frhs,dt(j));
uold=unew;
x(i)=told;
y(i)=unew;
end
fprintf(‘v(60) = %f when dt = %f n’,unew,dt(j))
plot(x,y,’color’,rand(1,3))
legend(sprintf(‘dt=%f’,dt(j)))
end
xlabel(‘time’)
ylabel(‘vertical velocity’)
I would like to get graph which different color line with each dt and legend to show which color is which dt.
When I run the code, color is random every time I run, but all lines are same color and legend has only for dt=0.3. Hello,
I draw the graph v vs t using for loop and graph should include multiple line for different dt. I try to let each lines have different color and add legend, but I got same color line and legend for last loop only. Code I write is:
%initial condition
uold=0;
dt=0.01;
i=0;%count
j=1;
frhs=@(t,v) (1/1000)*(1064*t*exp(-0.95*v)-135*v^2)-9.81;
dt=[0.001, 0.005, 0.01, 0.05, 0.1, 0.3];
for j=1:length(dt)
for told=0:dt:60
i=i+1;
[unew] = RK4(told,uold,frhs,dt(j));
uold=unew;
x(i)=told;
y(i)=unew;
end
fprintf(‘v(60) = %f when dt = %f n’,unew,dt(j))
plot(x,y,’color’,rand(1,3))
legend(sprintf(‘dt=%f’,dt(j)))
end
xlabel(‘time’)
ylabel(‘vertical velocity’)
I would like to get graph which different color line with each dt and legend to show which color is which dt.
When I run the code, color is random every time I run, but all lines are same color and legend has only for dt=0.3. for loop, graph, plot, color, legend MATLAB Answers — New Questions
how many coefficients were retained after reconstruction (IDWT)? and how does the quality of reconstruction vary with respect to number of DWT coefficients?
I have used inbuilt ‘wdencmp’ function for image denoising and my image got denoised, but I want to know how many coefficients were retained after reconstruction (IDWT)?
dwtmode(‘sym’);
[thr,sorh,keepapp]=ddencmp(‘den’,’wv’,input);
imgden=wdencmp(‘gbl’,input,’db7′,7,thr,sorh,keepapp);
and how does the quality of reconstruction vary with respect to number of DWT coefficients?I have used inbuilt ‘wdencmp’ function for image denoising and my image got denoised, but I want to know how many coefficients were retained after reconstruction (IDWT)?
dwtmode(‘sym’);
[thr,sorh,keepapp]=ddencmp(‘den’,’wv’,input);
imgden=wdencmp(‘gbl’,input,’db7′,7,thr,sorh,keepapp);
and how does the quality of reconstruction vary with respect to number of DWT coefficients? I have used inbuilt ‘wdencmp’ function for image denoising and my image got denoised, but I want to know how many coefficients were retained after reconstruction (IDWT)?
dwtmode(‘sym’);
[thr,sorh,keepapp]=ddencmp(‘den’,’wv’,input);
imgden=wdencmp(‘gbl’,input,’db7′,7,thr,sorh,keepapp);
and how does the quality of reconstruction vary with respect to number of DWT coefficients? retained coefficients, wavelets, image denoising, wdencmp MATLAB Answers — New Questions
Find the variable inside the LCM argument
I came up with a B=lcm(nrt,Nr*Nc) formula how to find Nr*Nc ?? i have B and nrtI came up with a B=lcm(nrt,Nr*Nc) formula how to find Nr*Nc ?? i have B and nrt I came up with a B=lcm(nrt,Nr*Nc) formula how to find Nr*Nc ?? i have B and nrt lcm, least common multiple set MATLAB Answers — New Questions
How to propagate a signal in time and space using Simulink
Hello all, I am interested in creating simplified models of acoustic feedback in fluid flows, and am exploring simulink to deduce simple transfer function. I am a novice of simulink and am not sure if this is the right tool for the job. In short, I want to model my complicated flow as a back and forth signal propogation in 1D as sketched below:
|———->——-<—–|
So far, I have only been able to create signal models as a function of time. My question is, can simulink create models as a function of time and space? ie) can I define a 1D domain and watch a signal propogate back and forth in time? What are some basic steps to go about this? Thanks!!Hello all, I am interested in creating simplified models of acoustic feedback in fluid flows, and am exploring simulink to deduce simple transfer function. I am a novice of simulink and am not sure if this is the right tool for the job. In short, I want to model my complicated flow as a back and forth signal propogation in 1D as sketched below:
|———->——-<—–|
So far, I have only been able to create signal models as a function of time. My question is, can simulink create models as a function of time and space? ie) can I define a 1D domain and watch a signal propogate back and forth in time? What are some basic steps to go about this? Thanks!! Hello all, I am interested in creating simplified models of acoustic feedback in fluid flows, and am exploring simulink to deduce simple transfer function. I am a novice of simulink and am not sure if this is the right tool for the job. In short, I want to model my complicated flow as a back and forth signal propogation in 1D as sketched below:
|———->——-<—–|
So far, I have only been able to create signal models as a function of time. My question is, can simulink create models as a function of time and space? ie) can I define a 1D domain and watch a signal propogate back and forth in time? What are some basic steps to go about this? Thanks!! simulink, signals MATLAB Answers — New Questions
How to create random sequence?
How to generate gaussain random sequence with mean = 817e-9 and standard deviation = 10e-9 and probability = 0.25 (total 50 numbers)How to generate gaussain random sequence with mean = 817e-9 and standard deviation = 10e-9 and probability = 0.25 (total 50 numbers) How to generate gaussain random sequence with mean = 817e-9 and standard deviation = 10e-9 and probability = 0.25 (total 50 numbers) gaussian distribution, random sequence MATLAB Answers — New Questions
Why training stops showing error (out of memory) during implementing transfer learning with pre-trained network despite having a laptop of well configuration?
Trying to use trasnfer learning method for classsify images but I have failed to run. It always stop showing error: out of memory. I have faced the same problem when I have tried to build a large and complex cnn architecture from scratch. At first I have thought that too large dataset caused the problem.I have tried my model with only few images to test and even have tried to run in better configured pc than my laptop also, but I couln’t get rid of the problem. Now I am facing the same issue while trying transfer learing. I do need both runinng a complex network from scratch and using pre-trained network.
I have follwed the documentation of transfer learning using the Prepare Network for Transfer Learning Using Deep Network Designer.
The details of images, choosen pre-trained methods and pc confuguration are:
images no: 60,000
class of image: 13
pre-trained network: DenseNet-201
laptop configuration: Ryzen 7, RAM 16GB, GPU NVIDIA GEFORCE RTX 3050
I am also attaching the Error msg showing and gpu details from gpuDevice:Trying to use trasnfer learning method for classsify images but I have failed to run. It always stop showing error: out of memory. I have faced the same problem when I have tried to build a large and complex cnn architecture from scratch. At first I have thought that too large dataset caused the problem.I have tried my model with only few images to test and even have tried to run in better configured pc than my laptop also, but I couln’t get rid of the problem. Now I am facing the same issue while trying transfer learing. I do need both runinng a complex network from scratch and using pre-trained network.
I have follwed the documentation of transfer learning using the Prepare Network for Transfer Learning Using Deep Network Designer.
The details of images, choosen pre-trained methods and pc confuguration are:
images no: 60,000
class of image: 13
pre-trained network: DenseNet-201
laptop configuration: Ryzen 7, RAM 16GB, GPU NVIDIA GEFORCE RTX 3050
I am also attaching the Error msg showing and gpu details from gpuDevice: Trying to use trasnfer learning method for classsify images but I have failed to run. It always stop showing error: out of memory. I have faced the same problem when I have tried to build a large and complex cnn architecture from scratch. At first I have thought that too large dataset caused the problem.I have tried my model with only few images to test and even have tried to run in better configured pc than my laptop also, but I couln’t get rid of the problem. Now I am facing the same issue while trying transfer learing. I do need both runinng a complex network from scratch and using pre-trained network.
I have follwed the documentation of transfer learning using the Prepare Network for Transfer Learning Using Deep Network Designer.
The details of images, choosen pre-trained methods and pc confuguration are:
images no: 60,000
class of image: 13
pre-trained network: DenseNet-201
laptop configuration: Ryzen 7, RAM 16GB, GPU NVIDIA GEFORCE RTX 3050
I am also attaching the Error msg showing and gpu details from gpuDevice: showing error, out of memory, transfer learning, complex cnn structure MATLAB Answers — New Questions
Can the software read more precise numbers (such as decimal points)?
i have picture but the matlab show data is the number such like 1,2,3 but i want more detail like 1.32 or 2.16 and so on
To put it simply, can it be one or two digits after minor surgery?
above is my coding and my picture which i want read and caculate
data = adjusted_image(:);
fprintf( ‘value:n’);
disp(data);
sample image(jpg) i tried to use tiff but the error is more serious
Note: He should display numbers from 0-5, although there are manyi have picture but the matlab show data is the number such like 1,2,3 but i want more detail like 1.32 or 2.16 and so on
To put it simply, can it be one or two digits after minor surgery?
above is my coding and my picture which i want read and caculate
data = adjusted_image(:);
fprintf( ‘value:n’);
disp(data);
sample image(jpg) i tried to use tiff but the error is more serious
Note: He should display numbers from 0-5, although there are many i have picture but the matlab show data is the number such like 1,2,3 but i want more detail like 1.32 or 2.16 and so on
To put it simply, can it be one or two digits after minor surgery?
above is my coding and my picture which i want read and caculate
data = adjusted_image(:);
fprintf( ‘value:n’);
disp(data);
sample image(jpg) i tried to use tiff but the error is more serious
Note: He should display numbers from 0-5, although there are many image reading MATLAB Answers — New Questions
Need help to implement SEAC technique in MATLAB
I want to use Shared Experience Actor Critic (SEAC) reinforcement learning technique, but there is only actor-critic model in MTALB tool box. What should i do now? how I can implement SEAC technique in MATLAB or is there any easy way to intregate python code in MATLAB for example I do my implementation in python and then call it in MTALB in my MATLAB simulatorI want to use Shared Experience Actor Critic (SEAC) reinforcement learning technique, but there is only actor-critic model in MTALB tool box. What should i do now? how I can implement SEAC technique in MATLAB or is there any easy way to intregate python code in MATLAB for example I do my implementation in python and then call it in MTALB in my MATLAB simulator I want to use Shared Experience Actor Critic (SEAC) reinforcement learning technique, but there is only actor-critic model in MTALB tool box. What should i do now? how I can implement SEAC technique in MATLAB or is there any easy way to intregate python code in MATLAB for example I do my implementation in python and then call it in MTALB in my MATLAB simulator shared-experience actor-critic MATLAB Answers — New Questions
Gaussian Psychometric function – Prepare data
Good morning,
sorry I am new to Matlab and stuck on thins problem for weeks already. Probably t is a basic question and I would be so happy if someone could help.
I am trying to fit a psychometric gaussian function on my data (have 30 different data sets). The important table columns basically look like this:
z1 z2 z3 z4
___ __ __ __
-1 0 0 1
0 2 2 0
1 0 2 1
2 0 2 1
3 2 0 1
4 2 0 1
5 0 2 1
6 4 0 0
7 3 4 0
So z1 is just the number of trials, z2 is a condition (ranging from 1-5) and z3 is another sencond condition (0, 2, 4). z4 is the reaction itself (so 0 and 1).
To fit the curve I thought that I use the following:
[m,s] = normfit(Z4);
y = normpdf(Z4,m,s);
plot(Z4,y,’.’);
However, how can I include the other two conditions so I have trials ranging from 1-5 and 0,2,4. I would have to calculate the mean and standard deviation only for these trials? Or is the overall function incorrect?
So thankful!!Good morning,
sorry I am new to Matlab and stuck on thins problem for weeks already. Probably t is a basic question and I would be so happy if someone could help.
I am trying to fit a psychometric gaussian function on my data (have 30 different data sets). The important table columns basically look like this:
z1 z2 z3 z4
___ __ __ __
-1 0 0 1
0 2 2 0
1 0 2 1
2 0 2 1
3 2 0 1
4 2 0 1
5 0 2 1
6 4 0 0
7 3 4 0
So z1 is just the number of trials, z2 is a condition (ranging from 1-5) and z3 is another sencond condition (0, 2, 4). z4 is the reaction itself (so 0 and 1).
To fit the curve I thought that I use the following:
[m,s] = normfit(Z4);
y = normpdf(Z4,m,s);
plot(Z4,y,’.’);
However, how can I include the other two conditions so I have trials ranging from 1-5 and 0,2,4. I would have to calculate the mean and standard deviation only for these trials? Or is the overall function incorrect?
So thankful!! Good morning,
sorry I am new to Matlab and stuck on thins problem for weeks already. Probably t is a basic question and I would be so happy if someone could help.
I am trying to fit a psychometric gaussian function on my data (have 30 different data sets). The important table columns basically look like this:
z1 z2 z3 z4
___ __ __ __
-1 0 0 1
0 2 2 0
1 0 2 1
2 0 2 1
3 2 0 1
4 2 0 1
5 0 2 1
6 4 0 0
7 3 4 0
So z1 is just the number of trials, z2 is a condition (ranging from 1-5) and z3 is another sencond condition (0, 2, 4). z4 is the reaction itself (so 0 and 1).
To fit the curve I thought that I use the following:
[m,s] = normfit(Z4);
y = normpdf(Z4,m,s);
plot(Z4,y,’.’);
However, how can I include the other two conditions so I have trials ranging from 1-5 and 0,2,4. I would have to calculate the mean and standard deviation only for these trials? Or is the overall function incorrect?
So thankful!! gaussian, function, cumulative function, mean, standard deviation MATLAB Answers — New Questions