Answered

why am I getting this error ? Any help please

filename = file_list{i}; data_in = readtable( fullfile(path_n, filename) );

why am I getting this error ? Any help please

filename = file_list{i}; data_in = readtable( fullfile(path_n, filename) );

2 days ago | 1

Answered

MATLAB doesnÂ´t open after activation

See https://www.mathworks.com/matlabcentral/answers/106141-why-am-i-continuously-prompted-to-activate-when-i-try-to-launch-matla...

MATLAB doesnÂ´t open after activation

See https://www.mathworks.com/matlabcentral/answers/106141-why-am-i-continuously-prompted-to-activate-when-i-try-to-launch-matla...

3 days ago | 0

Answered

modifying an identity matrix

I = eye(7) r = size(I,1); newI = diag([ones(1,r-2), 0],-1) + I

modifying an identity matrix

I = eye(7) r = size(I,1); newI = diag([ones(1,r-2), 0],-1) + I

3 days ago | 0

| accepted

Answered

Help with neighbor function - inconsistent node connections

MaxNeigh = 3; neigh = zeros(MaxNeigh,1); coder.varsize('neigh', [MaxNeigh 1], [1 0]); %second dimension is fixed neigh = ...

Help with neighbor function - inconsistent node connections

MaxNeigh = 3; neigh = zeros(MaxNeigh,1); coder.varsize('neigh', [MaxNeigh 1], [1 0]); %second dimension is fixed neigh = ...

3 days ago | 0

Answered

How to convert an optimization variable to symbolic variable?

It does not appear to be documented, but use optimexpr2fcn() on the optimization expression, to get back a function handle to a ...

How to convert an optimization variable to symbolic variable?

It does not appear to be documented, but use optimexpr2fcn() on the optimization expression, to get back a function handle to a ...

3 days ago | 0

| accepted

Answered

Data dimensions must agree. Using surf

[pA, T] = meshgrid(7600000:100000:20000000, 313:1:373); mu = ((((-0.1146067)+(0.000000697838).*(pA/100000)+(0.0000000003976765)...

Data dimensions must agree. Using surf

[pA, T] = meshgrid(7600000:100000:20000000, 313:1:373); mu = ((((-0.1146067)+(0.000000697838).*(pA/100000)+(0.0000000003976765)...

3 days ago | 0

| accepted

Answered

Compiling CUDA files with mexcuda in matlab2021b report error

Look at https://www.mathworks.com/content/dam/mathworks/mathworks-dot-com/support/sysreq/files/system-requirements-release-2021...

Compiling CUDA files with mexcuda in matlab2021b report error

Look at https://www.mathworks.com/content/dam/mathworks/mathworks-dot-com/support/sysreq/files/system-requirements-release-2021...

3 days ago | 0

Answered

How to use lsqnonlin command for solving a cost function minimization problem which consists of optimization variable?

C = [0 0 0 1 0 1 0 0]; D = [0;0]; x = [zeros(4,1)]; u = optimvar('U',2); f=0; % for loop here to create an object...

How to use lsqnonlin command for solving a cost function minimization problem which consists of optimization variable?

C = [0 0 0 1 0 1 0 0]; D = [0;0]; x = [zeros(4,1)]; u = optimvar('U',2); f=0; % for loop here to create an object...

3 days ago | 0

Answered

How would I detect gray/white pixels in a picture?

Convert for HSV, check for "high" V (near 1) and "small" (near 0) S. You will need to decide on the exact boundaries, depending ...

How would I detect gray/white pixels in a picture?

Convert for HSV, check for "high" V (near 1) and "small" (near 0) S. You will need to decide on the exact boundaries, depending ...

3 days ago | 1

| accepted

Answered

Use workspace variable in equation solver

syms x y eqn = x + y == 25 y = 5 subs(eqn) y = 9 subs(eqn)

Use workspace variable in equation solver

syms x y eqn = x + y == 25 y = 5 subs(eqn) y = 9 subs(eqn)

3 days ago | 0

Answered

What does the warning "Integrand function outputs did not match to the required tolerance" mean?

Yes, it does mean the value is inaccurate. It means that the value is probably meaningless. You probably used / or * instead of...

What does the warning "Integrand function outputs did not match to the required tolerance" mean?

Yes, it does mean the value is inaccurate. It means that the value is probably meaningless. You probably used / or * instead of...

3 days ago | 1

Answered

Send data from an array to NumericEditFields

app.Simul = sim(app.Calling.net_SOLD,app.D2); app.EditField_1.Value = app.Simul(1); app.EditField_2.Va...

Send data from an array to NumericEditFields

app.Simul = sim(app.Calling.net_SOLD,app.D2); app.EditField_1.Value = app.Simul(1); app.EditField_2.Va...

3 days ago | 1

Answered

Can one of MATLAB's optimization algorithms (e.g. particle swarm optimization) take the place of this brute force parameter sweep iteration?

In theory, NO, none of those functions can take the place of a parameter sweep for a generalized calculation. There are calcula...

Can one of MATLAB's optimization algorithms (e.g. particle swarm optimization) take the place of this brute force parameter sweep iteration?

In theory, NO, none of those functions can take the place of a parameter sweep for a generalized calculation. There are calcula...

3 days ago | 0

| accepted

Answered

Difficulties in Assembling an array from NumericEditFields in app designer

app.D1 = [app.Is.Value; app.Us.Value; app.Vs.Value; app.Es.Value]; Or... you could leave app.D1 as it is, and at the time you n...

Difficulties in Assembling an array from NumericEditFields in app designer

app.D1 = [app.Is.Value; app.Us.Value; app.Vs.Value; app.Es.Value]; Or... you could leave app.D1 as it is, and at the time you n...

3 days ago | 1

| accepted

Answered

Convert some Table Variables from Cell to Double

for i = 1 : length(holdNames) thisname = holdNames{i}; T.(thisname) = str2double(T.(thisname)); end

Convert some Table Variables from Cell to Double

for i = 1 : length(holdNames) thisname = holdNames{i}; T.(thisname) = str2double(T.(thisname)); end

3 days ago | 0

| accepted

Answered

Add dates in x-axis of every graph

datetick() is not "sticky": it does a one-time conversion of the xlim range into formatted ticks, or (depending on the option) t...

Add dates in x-axis of every graph

datetick() is not "sticky": it does a one-time conversion of the xlim range into formatted ticks, or (depending on the option) t...

3 days ago | 0

Answered

how to find specific string out of a list in an excel

data = readtable('FileNameGoesHere'); mask = data{:,ColumnNumberGoesHere} == 9; subset = data(mask,:); writetable(subset, 'sa...

how to find specific string out of a list in an excel

data = readtable('FileNameGoesHere'); mask = data{:,ColumnNumberGoesHere} == 9; subset = data(mask,:); writetable(subset, 'sa...

3 days ago | 1

Answered

Two variables concatenation to one in Simulink

How do you want distinguish these cases: A = 1234 B = 567 A = 123 B = 4567 What do you want to do if the values are negative...

Two variables concatenation to one in Simulink

How do you want distinguish these cases: A = 1234 B = 567 A = 123 B = 4567 What do you want to do if the values are negative...

3 days ago | 0

Answered

How to compile MEX binary that only works on 64 bit Linux to use it on macOS?

It is not necessary to cross-compile; the GIT repository includes the .cpp source code (and the .c sources needed for different ...

How to compile MEX binary that only works on 64 bit Linux to use it on macOS?

It is not necessary to cross-compile; the GIT repository includes the .cpp source code (and the .c sources needed for different ...

3 days ago | 0

| accepted

Answered

Can I run MATLAB (R2017 or newer) on a Lenovo Chromebook with an AMD A4 processor?

No, the only supported operating systems are Windows, Linux, and MacOS. ChromeOS is not supported.

Can I run MATLAB (R2017 or newer) on a Lenovo Chromebook with an AMD A4 processor?

No, the only supported operating systems are Windows, Linux, and MacOS. ChromeOS is not supported.

3 days ago | 0

Answered

how can I plot this figures

https://www.mathworks.com/help/matlab/ref/histcounts2.html can be used to calculate the counts for density plot purposes. images...

how can I plot this figures

https://www.mathworks.com/help/matlab/ref/histcounts2.html can be used to calculate the counts for density plot purposes. images...

4 days ago | 0

Answered

How to concatenate/combine a list of images in one mat.file (convert picture 1 into picture 2)

What you are asking for is possible but not recommended. You are asking to open the variable browser on each field of the struct...

How to concatenate/combine a list of images in one mat.file (convert picture 1 into picture 2)

What you are asking for is possible but not recommended. You are asking to open the variable browser on each field of the struct...

4 days ago | 0

Answered

Fmincon Error Message please help!

In order to get that error at that line of code, your function Obj_Complex had to have generated an error message when evaluated...

Fmincon Error Message please help!

In order to get that error at that line of code, your function Obj_Complex had to have generated an error message when evaluated...

4 days ago | 0

Answered

OPEN(OPEN_COUNT,:)=insert_open(xNode,yNode,path_cost,goal_distance); how to solve this error please help fast

https://www.mathworks.com/matlabcentral/fileexchange/26248-a-a-star-search-for-path-planning-tutorial has the source code

OPEN(OPEN_COUNT,:)=insert_open(xNode,yNode,path_cost,goal_distance); how to solve this error please help fast

https://www.mathworks.com/matlabcentral/fileexchange/26248-a-a-star-search-for-path-planning-tutorial has the source code

4 days ago | 0

Answered

How can i reshape a matrix

reshape(permute(M1, [1 3 2]),[],size(M1,2))

How can i reshape a matrix

reshape(permute(M1, [1 3 2]),[],size(M1,2))

5 days ago | 0

| accepted

Answered

How to show the cross cursor (instead of arrow) when clicking on the UIAxes in the App designer? How to save several coordinates when clicking for times via upButtonfunc?

https://www.mathworks.com/matlabcentral/answers/496366-how-do-i-change-the-pointer-property-on-a-ui-figure for information on...

How to show the cross cursor (instead of arrow) when clicking on the UIAxes in the App designer? How to save several coordinates when clicking for times via upButtonfunc?

https://www.mathworks.com/matlabcentral/answers/496366-how-do-i-change-the-pointer-property-on-a-ui-figure for information on...

5 days ago | 0

| accepted

Answered

How to obtain coordinate using 'ginput' in the UIaxis when coding in Appdesigner

See https://www.mathworks.com/matlabcentral/answers/392617-how-can-i-use-ginput-in-app-designer#answer_504862 for code. Requires...

How to obtain coordinate using 'ginput' in the UIaxis when coding in Appdesigner

See https://www.mathworks.com/matlabcentral/answers/392617-how-can-i-use-ginput-in-app-designer#answer_504862 for code. Requires...

5 days ago | 1

| accepted

Answered

Unable to run code due to an error in 'Fadeeva_m' function

you need to run the build script to compile faddeeva_w https://www.mathworks.com/matlabcentral/fileexchange/38787-faddeeva-pa...

Unable to run code due to an error in 'Fadeeva_m' function

you need to run the build script to compile faddeeva_w https://www.mathworks.com/matlabcentral/fileexchange/38787-faddeeva-pa...

5 days ago | 0

Answered

How to convert negative numbers in parentheses (bank-formatted text) to numbers with minus sign?

Use detectImportOptions and then modify the options to set that column to character or string type. Then regexprep() the column,...

How to convert negative numbers in parentheses (bank-formatted text) to numbers with minus sign?

Use detectImportOptions and then modify the options to set that column to character or string type. Then regexprep() the column,...

5 days ago | 1

Answered

WHEN I AM EXECUTING THIS CODE I GET A JULIA IMAGE .HOW CAN I READ THIS IMAGE IN THE CODE AND USE THIS TO GENERATE KEY FOR ENCRYPTION CRYPTION

Bre = im2uint8(rescale(B)); imgfile = 'B.png'; cmap = jet; Bc = ind2rgb(Bre, cmap) ; imwrite(Bc, imgfile) I =...

WHEN I AM EXECUTING THIS CODE I GET A JULIA IMAGE .HOW CAN I READ THIS IMAGE IN THE CODE AND USE THIS TO GENERATE KEY FOR ENCRYPTION CRYPTION

Bre = im2uint8(rescale(B)); imgfile = 'B.png'; cmap = jet; Bc = ind2rgb(Bre, cmap) ; imwrite(Bc, imgfile) I =...

5 days ago | 0

| accepted