Answered

something is wrong in my plotting code

syms y(t) t Y a b x(t) [V,Subs] = odeToVectorField(diff(y, 2) == -1*(a-b*cos(2*t))*y); M = matlabFunction(V,'Vars',{t,Y,a, b})...

something is wrong in my plotting code

syms y(t) t Y a b x(t) [V,Subs] = odeToVectorField(diff(y, 2) == -1*(a-b*cos(2*t))*y); M = matlabFunction(V,'Vars',{t,Y,a, b})...

alrededor de 2 horas ago | 0

Answered

How can solve constrait optimization?

A = [1 1 -1] b = 0 for A*X <= b, where X = [x; y; z], expresses x+y-z<=0 , which is x+y<=z Your other constraints that you pos...

How can solve constrait optimization?

A = [1 1 -1] b = 0 for A*X <= b, where X = [x; y; z], expresses x+y-z<=0 , which is x+y<=z Your other constraints that you pos...

alrededor de 2 horas ago | 0

Answered

how to solve the following equation to get lambda values from it?

modulus is a matrix operator; on a 2 x 2 input, it would give a 2 x 2 output. You ask that it be equal to 0: are you asking that...

how to solve the following equation to get lambda values from it?

modulus is a matrix operator; on a 2 x 2 input, it would give a 2 x 2 output. You ask that it be equal to 0: are you asking that...

alrededor de 2 horas ago | 0

Answered

readFrame() too slow. How to switch too VideoFileReader and VideoPlayer?

%Load file fileList = dir('*.mp4'); video_name = fileList(1).name; vid = vision.VideoFileReader(video_name); hfig = figure(1...

readFrame() too slow. How to switch too VideoFileReader and VideoPlayer?

%Load file fileList = dir('*.mp4'); video_name = fileList(1).name; vid = vision.VideoFileReader(video_name); hfig = figure(1...

alrededor de 3 horas ago | 0

| accepted

Answered

Scoping Data over Serial in Real Time - Is it feasible?

In theory a USB 2.0 port should be able to handle that data rate for a virtual COM port, provided that at least 160 bits of payl...

Scoping Data over Serial in Real Time - Is it feasible?

In theory a USB 2.0 port should be able to handle that data rate for a virtual COM port, provided that at least 160 bits of payl...

alrededor de 5 horas ago | 0

Answered

Greek character in script turned to a square or a question mark - any ideas why?

R2020a is the first release that handles UTF8 encoding in a way that is natural to the user. In releases before that, you had t...

Greek character in script turned to a square or a question mark - any ideas why?

R2020a is the first release that handles UTF8 encoding in a way that is natural to the user. In releases before that, you had t...

alrededor de 5 horas ago | 0

Answered

MATLAB coder GUI / CLI shows cryptic errors: libmwboost / CUDA_CODEGEN

"Invalid MEX-file '/path/on/my/machine' : libmwboost_system.so.1.65.1: cannot open shared object file: No such file or directory...

MATLAB coder GUI / CLI shows cryptic errors: libmwboost / CUDA_CODEGEN

"Invalid MEX-file '/path/on/my/machine' : libmwboost_system.so.1.65.1: cannot open shared object file: No such file or directory...

alrededor de 5 horas ago | 0

Answered

how to solve this error: FSOLVE requires all values returned by functions to be of data type double?

PV=@(c0) double(integral(G(c0,y)*f(y),0,(3*Cp*sqrt(n)))-alpha); PV is a function handle. x=fsolve(@(c0)PV,0); @(c0)PV is a fu...

how to solve this error: FSOLVE requires all values returned by functions to be of data type double?

PV=@(c0) double(integral(G(c0,y)*f(y),0,(3*Cp*sqrt(n)))-alpha); PV is a function handle. x=fsolve(@(c0)PV,0); @(c0)PV is a fu...

alrededor de 5 horas ago | 0

Answered

plotting a special function

if((teta>pi/4)&(pi<teta<=5*pi/4)), Nteta=7*N/8; You are overwriting all of Nteta there, with a scalar. At the end of your for ...

plotting a special function

if((teta>pi/4)&(pi<teta<=5*pi/4)), Nteta=7*N/8; You are overwriting all of Nteta there, with a scalar. At the end of your for ...

alrededor de 5 horas ago | 0

Answered

parfor: unable to classify

The majority of "Unable to classify" errors that can be solved without a large rewrite, can be solved by steps similar to these:...

parfor: unable to classify

The majority of "Unable to classify" errors that can be solved without a large rewrite, can be solved by steps similar to these:...

alrededor de 6 horas ago | 0

Answered

uiwait, msgbox, listdlg are not working properly in Matlab 2013a with Windows 7

What shows up for which -all set In particular you should be interested in anything that is not marked as a java method or bui...

uiwait, msgbox, listdlg are not working properly in Matlab 2013a with Windows 7

What shows up for which -all set In particular you should be interested in anything that is not marked as a java method or bui...

alrededor de 6 horas ago | 0

| accepted

Answered

How to play random song from list box in GUI Matlab?

songnames = handles.AppropriateListboxName.String; N = length(songnames); randomsong = songnames{randi(N)}; and then proceed ...

How to play random song from list box in GUI Matlab?

songnames = handles.AppropriateListboxName.String; N = length(songnames); randomsong = songnames{randi(N)}; and then proceed ...

alrededor de 6 horas ago | 0

| accepted

Answered

Import data file with comma decimal point

In fairly recent versions of MATLAB, readtable() can now process text files that use comma as decimal point. If it does not auto...

Import data file with comma decimal point

In fairly recent versions of MATLAB, readtable() can now process text files that use comma as decimal point. If it does not auto...

alrededor de 7 horas ago | 2

Answered

actxserver not calling application

TotalTide Defence appears to date from 2002 in some releases. I am having trouble tracking down details, but my suspicion is tha...

actxserver not calling application

TotalTide Defence appears to date from 2002 in some releases. I am having trouble tracking down details, but my suspicion is tha...

alrededor de 10 horas ago | 0

Answered

Why do I get Linker errors while building a Simulink model to dll file

https://github.com/ldc-developers/ldc/issues/822 You are using Sdk7.1 compiler which does not implement some of the C99 functi...

Why do I get Linker errors while building a Simulink model to dll file

https://github.com/ldc-developers/ldc/issues/822 You are using Sdk7.1 compiler which does not implement some of the C99 functi...

alrededor de 11 horas ago | 0

Answered

passed to equation that has variable of symbolic

as discussed in https://www.mathworks.com/matlabcentral/answers/570979-second-argument-must-be-a-vector-of-symbolic-variables#an...

passed to equation that has variable of symbolic

as discussed in https://www.mathworks.com/matlabcentral/answers/570979-second-argument-must-be-a-vector-of-symbolic-variables#an...

alrededor de 11 horas ago | 0

Answered

plot just y or y' in a second order eq.

syms y(t) x(t) [V] = odeToVectorField(diff(y, 2) == -1*(1-1*cos(2*t))*y); M = matlabFunction(V,'vars', {'t','Y'}); [ty,y] = o...

plot just y or y' in a second order eq.

syms y(t) x(t) [V] = odeToVectorField(diff(y, 2) == -1*(1-1*cos(2*t))*y); M = matlabFunction(V,'vars', {'t','Y'}); [ty,y] = o...

alrededor de 14 horas ago | 0

| accepted

Answered

How to replace string values in a column of a table into numeric?

fruit_types = {'apple', 'orange', 'grape', 'banana', 'kumquat', 'peach', 'tomato', 'strawberry', 'pineapple', 'kiwi', 'blueberry...

How to replace string values in a column of a table into numeric?

fruit_types = {'apple', 'orange', 'grape', 'banana', 'kumquat', 'peach', 'tomato', 'strawberry', 'pineapple', 'kiwi', 'blueberry...

alrededor de 15 horas ago | 0

| accepted

Answered

Problem with adjusting custom colormap and colorbar

The colormap process is uniform mapping. All bars are the same size. However you can assign the same color to multiple bars. ...

Problem with adjusting custom colormap and colorbar

The colormap process is uniform mapping. All bars are the same size. However you can assign the same color to multiple bars. ...

1 día ago | 1

| accepted

Answered

growing bubbles with a predetermined radius in a given volume?

No, there is no code for that. For it to be maximum possible it would have to solve the sphere packing problem, which is general...

growing bubbles with a predetermined radius in a given volume?

No, there is no code for that. For it to be maximum possible it would have to solve the sphere packing problem, which is general...

1 día ago | 1

Answered

[SIMULINK] Sound interface, multiple inputs and outputs

https://www.mathworks.com/help/audio/ref/audiodevicereader.html The block will read all of the channels unless you choose the...

[SIMULINK] Sound interface, multiple inputs and outputs

https://www.mathworks.com/help/audio/ref/audiodevicereader.html The block will read all of the channels unless you choose the...

1 día ago | 0

Answered

Solving a simple integral with input equation from user

syms x str = input('Enter an equation in x: ','s') ; f = str2sym(str) ; xmin= input('Lower limit of x: ') xmax= in...

Solving a simple integral with input equation from user

syms x str = input('Enter an equation in x: ','s') ; f = str2sym(str) ; xmin= input('Lower limit of x: ') xmax= in...

1 día ago | 1

Answered

Why sum block outputs value half of the input?

There is no implied delay between blocks, and you have configured a continuous solver. Your system is equivalent to asking ...

Why sum block outputs value half of the input?

There is no implied delay between blocks, and you have configured a continuous solver. Your system is equivalent to asking ...

1 día ago | 0

| accepted

Answered

Choose rows that the first column is larger than the second column

A(A(:,1)>A(:,2),:)

Choose rows that the first column is larger than the second column

A(A(:,1)>A(:,2),:)

1 día ago | 0

| accepted

Answered

Error message of fminsearchbnd

fmincon is an iterative process. There is a built in limit on the number of steps that it will take. Sometimes that is not enoug...

Error message of fminsearchbnd

fmincon is an iterative process. There is a built in limit on the number of steps that it will take. Sometimes that is not enoug...

1 día ago | 0

| accepted

Answered

Agilent 33250a Function Generator. How to get the waveform via serial port?

I seldom look at waveform generators, several years apart... but it happens that someone else asked me about them this morning, ...

Agilent 33250a Function Generator. How to get the waveform via serial port?

I seldom look at waveform generators, several years apart... but it happens that someone else asked me about them this morning, ...

1 día ago | 0

Answered

GAN Training: Error with augmented image datastore

https://www.mathworks.com/help/deeplearning/ref/augmentedimagedatastore.html#mw_d4cb9c52-c701-4e94-95d8-96ae545d295f You prese...

GAN Training: Error with augmented image datastore

https://www.mathworks.com/help/deeplearning/ref/augmentedimagedatastore.html#mw_d4cb9c52-c701-4e94-95d8-96ae545d295f You prese...

1 día ago | 0

| accepted

Answered

how can i solve this error

integral() is reserved for numeric integration. You are doing integration of symbolic expression. You need to use int() or vpain...

how can i solve this error

integral() is reserved for numeric integration. You are doing integration of symbolic expression. You need to use int() or vpain...

2 días ago | 0

| accepted

Answered

Can anyone explain me why M' is taken in the following code?

By default, min() and max() operate along the first non-scalar dimension. If you have a 2D array, m x n, with m and n both not 1...

Can anyone explain me why M' is taken in the following code?

By default, min() and max() operate along the first non-scalar dimension. If you have a 2D array, m x n, with m and n both not 1...

2 días ago | 0

Answered

Printing output of evalfis to a static or edit textbox in GUIDE GUI

handles.AppropriateHandle.String = num2str(Y); This will give you problems if Y has multiple rows, unless handles.AppropriateHa...

Printing output of evalfis to a static or edit textbox in GUIDE GUI

handles.AppropriateHandle.String = num2str(Y); This will give you problems if Y has multiple rows, unless handles.AppropriateHa...

3 días ago | 0