Answered

Simple Matrix Manipulation Help

There is no solution for that. solve(A*X == B) Look at entry #11 in B, where you have a 0 where the sequence would otherwise p...

Simple Matrix Manipulation Help

There is no solution for that. solve(A*X == B) Look at entry #11 in B, where you have a 0 where the sequence would otherwise p...

1 day ago | 0

Answered

separate table data in to sub tables

G = findgroups(YourTable.name); output = splitapply(@(varargin) {table(varargin{:}, 'VariableNames', YourTable.Properties.Varia...

separate table data in to sub tables

G = findgroups(YourTable.name); output = splitapply(@(varargin) {table(varargin{:}, 'VariableNames', YourTable.Properties.Varia...

1 day ago | 0

Answered

Format of mat file in Version R2019a

The documentation for MAT 1.0 and MAT 2.0 files is lost to history as far as I can tell. The documentation for MAT 3.0 and MAT ...

Format of mat file in Version R2019a

The documentation for MAT 1.0 and MAT 2.0 files is lost to history as far as I can tell. The documentation for MAT 3.0 and MAT ...

1 day ago | 0

Answered

What's the difference between Matlab runtime and Matlab(R) Compiler Runtime

The 7.14 software is for applications compiled with r2010b

What's the difference between Matlab runtime and Matlab(R) Compiler Runtime

The 7.14 software is for applications compiled with r2010b

1 day ago | 0

| accepted

Answered

How can I generate reciprocal of a matrix

I suspect that you want inv(A) but possibly you want 1./A In most cases inv() is better avoided in favor of using the \ opera...

How can I generate reciprocal of a matrix

I suspect that you want inv(A) but possibly you want 1./A In most cases inv() is better avoided in favor of using the \ opera...

1 day ago | 0

Answered

how i can save the value of two signals when they are equal

N = 14; a = zeros(1, N); b = 1; for K = 1 : length(signal_1) if signal_1(K) == signal_2(K) a(b) = signal_1(K); ...

how i can save the value of two signals when they are equal

N = 14; a = zeros(1, N); b = 1; for K = 1 : length(signal_1) if signal_1(K) == signal_2(K) a(b) = signal_1(K); ...

2 days ago | 1

Answered

License Manager Error -9

Yes. It is permitted to run MATLAB dual-booted on the same machine, as long as the hardware identification information matches. ...

License Manager Error -9

Yes. It is permitted to run MATLAB dual-booted on the same machine, as long as the hardware identification information matches. ...

2 days ago | 1

| accepted

Answered

STRING ARRAY TO NUMERIC VALUES ( I want to change the array's type to plot the graph, even though I use double function or str2num that doesn't change anything and it still string)

new_frequency(1:rowRPM(1,1)) = str2double(frequency(1:rowRPM(1,1))); In the special case where you are converting all of the en...

STRING ARRAY TO NUMERIC VALUES ( I want to change the array's type to plot the graph, even though I use double function or str2num that doesn't change anything and it still string)

new_frequency(1:rowRPM(1,1)) = str2double(frequency(1:rowRPM(1,1))); In the special case where you are converting all of the en...

2 days ago | 1

Answered

How to make a matrix with negative indexes?

Modify https://www.mathworks.com/matlabcentral/fileexchange/33301-zero-based-indexable-arrays-oop-exercise Another approach is...

How to make a matrix with negative indexes?

Modify https://www.mathworks.com/matlabcentral/fileexchange/33301-zero-based-indexable-arrays-oop-exercise Another approach is...

2 days ago | 0

Answered

How I can repeatedly divide a binary image ?

Code for repeatedly dividing was provided at https://www.mathworks.com/matlabcentral/answers/456856-how-can-i-loop-over-a-binary...

How I can repeatedly divide a binary image ?

Code for repeatedly dividing was provided at https://www.mathworks.com/matlabcentral/answers/456856-how-can-i-loop-over-a-binary...

2 days ago | 0

Answered

Adding multiple fields and values to structure array

Provided you are setting all of the fields of data(k), then you can use data(k) = struct('PairNum', pairNum, 'level', level, 't...

Adding multiple fields and values to structure array

Provided you are setting all of the fields of data(k), then you can use data(k) = struct('PairNum', pairNum, 'level', level, 't...

2 days ago | 1

| accepted

Answered

How does Matrix(3002:2001:1999998)=0.4 works?

It is due to linear indexing. Variables can be indexed by a single number which is the number of elements from the beginning in ...

How does Matrix(3002:2001:1999998)=0.4 works?

It is due to linear indexing. Variables can be indexed by a single number which is the number of elements from the beginning in ...

2 days ago | 0

Answered

How can I append the same variables on mat file?

After you have created m = matfile() then new_row_of_values = something appropriate; s = size(m, 'my_variables'); m.my_vari...

How can I append the same variables on mat file?

After you have created m = matfile() then new_row_of_values = something appropriate; s = size(m, 'my_variables'); m.my_vari...

2 days ago | 1

Answered

Recursive computation using multi gpus

No. Within any one process, in order to send commands to a different GPU, you need to select the GPU. Selecting a GPU synchroni...

Recursive computation using multi gpus

No. Within any one process, in order to send commands to a different GPU, you need to select the GPU. Selecting a GPU synchroni...

2 days ago | 0

Answered

How to create a sliding window??

Apply regionprops() to find the bounding boxes. Sort the bounding boxes by lower left corner, according to x within y (that is, ...

How to create a sliding window??

Apply regionprops() to find the bounding boxes. Sort the bounding boxes by lower left corner, according to x within y (that is, ...

2 days ago | 0

Answered

How to use sliding window technique to detect one single line

Use nlfilter() to apply nonlinear algorithms to sliding windows. That said, there are some algorithms that can be much more eff...

How to use sliding window technique to detect one single line

Use nlfilter() to apply nonlinear algorithms to sliding windows. That said, there are some algorithms that can be much more eff...

2 days ago | 0

Answered

how can I compute memory usage?

You can turn on memory profiling; https://www.mathworks.com/matlabcentral/answers/214247-allocated-freed-self-memory-and-peak-me...

how can I compute memory usage?

You can turn on memory profiling; https://www.mathworks.com/matlabcentral/answers/214247-allocated-freed-self-memory-and-peak-me...

2 days ago | 1

Answered

ismember 0×0 empty logical array to logic

The obvious answer would seem to be to test if isempty(A) || ~ismember(A,ID) If you were hoping there were a hidden preferenc...

ismember 0×0 empty logical array to logic

The obvious answer would seem to be to test if isempty(A) || ~ismember(A,ID) If you were hoping there were a hidden preferenc...

2 days ago | 0

| accepted

Answered

How do I write this equation in Matlab?

There is a trick to solving inequalities: convert them to equalities. P/R < 1 implies P < R implies P + dP == R for some posit...

How do I write this equation in Matlab?

There is a trick to solving inequalities: convert them to equalities. P/R < 1 implies P < R implies P + dP == R for some posit...

2 days ago | 0

Answered

how can we create database with .mat files ?

Yes, it is possible. It is, however, of low value to do so. .mat files are just files, so they can be read in as arrays of uint...

how can we create database with .mat files ?

Yes, it is possible. It is, however, of low value to do so. .mat files are just files, so they can be read in as arrays of uint...

2 days ago | 0

Answered

how to make two differnt size array into same

[T3, ia, ib] = intersect(T1, T2); T3Temp = Temp(ia); T3RH = RH(ib); yyaxis left plot(T3, T3RH); yyaxis right plot(T3, R3Te...

how to make two differnt size array into same

[T3, ia, ib] = intersect(T1, T2); T3Temp = Temp(ia); T3RH = RH(ib); yyaxis left plot(T3, T3RH); yyaxis right plot(T3, R3Te...

2 days ago | 1

| accepted

Answered

Incidence matrix of a graph

If you have constructed a graph() object named G, then full(G.adjacency)

Incidence matrix of a graph

If you have constructed a graph() object named G, then full(G.adjacency)

3 days ago | 0

Answered

How can I create a loop that doesnt allow the same number to be input twice?

if length(unique(M)) ~= numel(M) error('You entered some number twice') end

How can I create a loop that doesnt allow the same number to be input twice?

if length(unique(M)) ~= numel(M) error('You entered some number twice') end

3 days ago | 0

Answered

[student] Asking your help to solve an issue with a function creating algebric loop

The problem is not that block: the problem is that you have blocks in which the output is connected to the input, but the calcul...

[student] Asking your help to solve an issue with a function creating algebric loop

The problem is not that block: the problem is that you have blocks in which the output is connected to the input, but the calcul...

3 days ago | 1

Answered

One instance running issue

Each run of the compiled executable is a separate process. The global variable will be destroyed between runs, same as if you ha...

One instance running issue

Each run of the compiled executable is a separate process. The global variable will be destroyed between runs, same as if you ha...

3 days ago | 0

Answered

how to prevent reordering of terms by symbolic math functions

Yes, there is a way. You can create a whole bunch of MuPAD code to use the general framework of the internal symbolic engine in ...

how to prevent reordering of terms by symbolic math functions

Yes, there is a way. You can create a whole bunch of MuPAD code to use the general framework of the internal symbolic engine in ...

3 days ago | 0

Answered

What license would cover the following application: making public videos/live streaming tutorials regarding Matlab/Simulink

Student licences only cover MATLAB use for courses and degree requirements. Home license could potentially cover what you des...

What license would cover the following application: making public videos/live streaming tutorials regarding Matlab/Simulink

Student licences only cover MATLAB use for courses and degree requirements. Home license could potentially cover what you des...

3 days ago | 0

Answered

How can I average datetimes of my array?

Not array2timetable. Use table2timetable

How can I average datetimes of my array?

Not array2timetable. Use table2timetable

3 days ago | 0

Answered

Calculating eigenvalues of matrices of symbolic matrices

The symbolic toolbox always considers a resolved symbolic variable to be a scalar, never as a stand-in for a matrix. You would h...

Calculating eigenvalues of matrices of symbolic matrices

The symbolic toolbox always considers a resolved symbolic variable to be a scalar, never as a stand-in for a matrix. You would h...

3 days ago | 0

Answered

For loop count question

a1 = -70:5:100; a2 = -60:5:60; a3 = -50:10:50; a4 = -40:10:40; N_a1 = length(a1); N_a2 = length(a2); N_a3 = length(a3); N...

For loop count question

a1 = -70:5:100; a2 = -60:5:60; a3 = -50:10:50; a4 = -40:10:40; N_a1 = length(a1); N_a2 = length(a2); N_a3 = length(a3); N...

3 days ago | 0

| accepted