Answered

Calling a function multiple times in a for loop.

psi(k) = test_M(rmv(k));

Calling a function multiple times in a for loop.

psi(k) = test_M(rmv(k));

1 hour ago | 0

| accepted

Answered

why my licence will expire

We do not have enough information about your license. Individual licenses do not expire for Home licenses or most Student licen...

why my licence will expire

We do not have enough information about your license. Individual licenses do not expire for Home licenses or most Student licen...

1 hour ago | 0

Answered

loglog plots don't always use log scale

The y axis *is* on log scale. Compare the distance between the bottom (1.0) and the tick above it (1.05) to the distance between...

loglog plots don't always use log scale

The y axis *is* on log scale. Compare the distance between the bottom (1.0) and the tick above it (1.05) to the distance between...

2 hours ago | 0

Answered

Randomisation of matrix for load forecasting

No, not in itself. You could use p as column indices, but when you submit all of the data together then it does not care what ot...

Randomisation of matrix for load forecasting

No, not in itself. You could use p as column indices, but when you submit all of the data together then it does not care what ot...

3 hours ago | 0

Answered

Unrecognized function or variable 'x'. Error (line 65)

num2str returns a character vector. You are trying to add and subtract character vectors, which MATLAB considers the same thing ...

Unrecognized function or variable 'x'. Error (line 65)

num2str returns a character vector. You are trying to add and subtract character vectors, which MATLAB considers the same thing ...

4 hours ago | 0

Answered

Trouble keeping three decimal places in my output

There is limited control over the way that table objects display values. table objects respond to the active setting for format,...

Trouble keeping three decimal places in my output

There is limited control over the way that table objects display values. table objects respond to the active setting for format,...

4 hours ago | 0

Answered

Index exceeds the number of array elements (4)

dy_v= [1 NaN NaN -0.67]; % The slopes/clamps at the end 4 entries. x_v=[1 2 5 6 7 8 10 13 17]; % The corresponding x va...

Index exceeds the number of array elements (4)

dy_v= [1 NaN NaN -0.67]; % The slopes/clamps at the end 4 entries. x_v=[1 2 5 6 7 8 10 13 17]; % The corresponding x va...

7 hours ago | 0

| accepted

Answered

macOS disk space after Update to R2020b

You should be looking at: ~/Documents/MATLAB/Examples %examples you loaded at some point and might not need ~/Docum...

macOS disk space after Update to R2020b

You should be looking at: ~/Documents/MATLAB/Examples %examples you loaded at some point and might not need ~/Docum...

7 hours ago | 0

Answered

Fitting Data from a matrix to polynomial

XY = [0.0 180.48242260204557 1.0472413857496277 -2.8019794514594967E-14 1.9636664333660168 -37.722506925880054 2.9199...

Fitting Data from a matrix to polynomial

XY = [0.0 180.48242260204557 1.0472413857496277 -2.8019794514594967E-14 1.9636664333660168 -37.722506925880054 2.9199...

8 hours ago | 0

Answered

I need help with my code

c1 = ult_trid(m,b); In your main function, that is the first time you mention c1, and it is an output from ult_trid . function...

I need help with my code

c1 = ult_trid(m,b); In your main function, that is the first time you mention c1, and it is an output from ult_trid . function...

8 hours ago | 0

| accepted

Answered

I got a matrix dimensions error while plotting a pressure field

p = 101325-1/2*1.225*(900+(90/pi)*(X1./(X1.^2+Y1.^2))+9./(4*pi^2*(X1.^2+Y1.^2)));

I got a matrix dimensions error while plotting a pressure field

p = 101325-1/2*1.225*(900+(90/pi)*(X1./(X1.^2+Y1.^2))+9./(4*pi^2*(X1.^2+Y1.^2)));

9 hours ago | 0

Answered

Name must contain a single string

See https://www.mathworks.com/matlabcentral/answers/349442-how-to-solve-the-stopfcn-error-when-the-cause-is-vectors-must-be-the-...

Name must contain a single string

See https://www.mathworks.com/matlabcentral/answers/349442-how-to-solve-the-stopfcn-error-when-the-cause-is-vectors-must-be-the-...

9 hours ago | 0

Answered

Reversible matrix in matlab

You need to take that code for irr_mat and store it in file irr_mat.m

Reversible matrix in matlab

You need to take that code for irr_mat and store it in file irr_mat.m

20 hours ago | 1

Answered

The number of rows in A must be the same as the number of elements of b.

MATLAB function calls use positional parameters, not named parameters. The second parameter you are passing, u0, is getting rece...

The number of rows in A must be the same as the number of elements of b.

MATLAB function calls use positional parameters, not named parameters. The second parameter you are passing, u0, is getting rece...

20 hours ago | 1

Answered

Can I schedule a job in Matlab online

You can use timer objects. Note that MATLAB Online will time out if you do not interact with the session from time to time. S...

Can I schedule a job in Matlab online

You can use timer objects. Note that MATLAB Online will time out if you do not interact with the session from time to time. S...

21 hours ago | 0

Answered

How can I randomly shuffle columns in my matrix

randperm() the number of columns and use the result as the column indices A(:, randperm(size(A, 2)))

How can I randomly shuffle columns in my matrix

randperm() the number of columns and use the result as the column indices A(:, randperm(size(A, 2)))

21 hours ago | 1

Answered

Can I use system composer with Matlab home license?

No, System Composer is not available for Home licenses.

Can I use system composer with Matlab home license?

No, System Composer is not available for Home licenses.

21 hours ago | 0

| accepted

Answered

Matlab doesn't do the complicated integration

int is for closed form integration to get an indefinitely precise solution. You cannot justify getting an indefinitely precise s...

Matlab doesn't do the complicated integration

int is for closed form integration to get an indefinitely precise solution. You cannot justify getting an indefinitely precise s...

22 hours ago | 0

Answered

how to count the number of terms in syms

feval(symengine, 'nops', A) In newer releases you can numel(children(A)) but that is several years after your version

how to count the number of terms in syms

feval(symengine, 'nops', A) In newer releases you can numel(children(A)) but that is several years after your version

22 hours ago | 1

Answered

can i convert matlab simulink model into matlab code?

No. There are no tools to convert Simulink to MATLAB. There are tools to convert Simulink to C or C++. Most Simulink blocks h...

can i convert matlab simulink model into matlab code?

No. There are no tools to convert Simulink to MATLAB. There are tools to convert Simulink to C or C++. Most Simulink blocks h...

23 hours ago | 0

Answered

What code is it?

That is not code. That is a .mat file created on a Windows system about a week ago. Possibly someone accidentally did a save...

What code is it?

That is not code. That is a .mat file created on a Windows system about a week ago. Possibly someone accidentally did a save...

24 hours ago | 0

Answered

How can I stop the pushbutton of guide being pressed until the callback function is executed completely ?

Set the Interruptible property to off. This will, though, prevent even timer interrupts if I understand correctly. The facili...

How can I stop the pushbutton of guide being pressed until the callback function is executed completely ?

Set the Interruptible property to off. This will, though, prevent even timer interrupts if I understand correctly. The facili...

1 day ago | 0

Answered

Can I download multiple versions of MATLAB with campus license?

Campus licenses are Educational licenses (not Student licenses.) The technical contact for the license has the option of restric...

Can I download multiple versions of MATLAB with campus license?

Campus licenses are Educational licenses (not Student licenses.) The technical contact for the license has the option of restric...

1 day ago | 0

Answered

is used PixelLabelDataStore?

FileExtensions is from a later release than you are using. Your release cannot used nii files with pixel label store, if I re...

is used PixelLabelDataStore?

FileExtensions is from a later release than you are using. Your release cannot used nii files with pixel label store, if I re...

1 day ago | 0

Answered

Infinite symsum returns symbolic number.

I do not know why that happens, but do this for a workaround: syms n x=0.5; y=1.5; f = (400/sinh(2*n*pi))*(((n*pi)*(1-(((-...

Infinite symsum returns symbolic number.

I do not know why that happens, but do this for a workaround: syms n x=0.5; y=1.5; f = (400/sinh(2*n*pi))*(((n*pi)*(1-(((-...

1 day ago | 0

| accepted

Answered

Repeating a sequence of code multiple times in a for loop with random intervals in between

rec=@(x) (x)>=0.75; for counter = 1 : 150 j = (0 : 0.01 : 29); k = sin(j); f = rec(k); [a,b]=find(f~=0); ...

Repeating a sequence of code multiple times in a for loop with random intervals in between

rec=@(x) (x)>=0.75; for counter = 1 : 150 j = (0 : 0.01 : 29); k = sin(j); f = rec(k); [a,b]=find(f~=0); ...

1 day ago | 0

Answered

Using matlab's spmd to compute simple triple integral is giving me incorrect solution, any thoughts on what I am doing wrong?

You integrate the first section of x with the first section of y and the first section of z, and the second section of x with th...

Using matlab's spmd to compute simple triple integral is giving me incorrect solution, any thoughts on what I am doing wrong?

You integrate the first section of x with the first section of y and the first section of z, and the second section of x with th...

1 day ago | 0

| accepted

Answered

Make a matrix with matching numbers per column from a bigger one

mask = A(:,1) == 2011 & A(:,5) == 101; B = A(mask,:);

Make a matrix with matching numbers per column from a bigger one

mask = A(:,1) == 2011 & A(:,5) == 101; B = A(mask,:);

1 day ago | 1

| accepted

Answered

Generate a 100000x100000 matrix that takes less time and memory

a=zeros(ni,ni,'uint8'); You are already using only one byte per entry. If you were to create logic that packed 8 adjacent ent...

Generate a 100000x100000 matrix that takes less time and memory

a=zeros(ni,ni,'uint8'); You are already using only one byte per entry. If you were to create logic that packed 8 adjacent ent...

1 day ago | 1

Answered

Start an external program (.exe) inside a matlab window

External processes always run as a separate window. However for non-graphic processes, you can control the standard output and s...

Start an external program (.exe) inside a matlab window

External processes always run as a separate window. However for non-graphic processes, you can control the standard output and s...

1 day ago | 0