Answered

unique vector with restrictions

I suggest you read this post about why dynamically named variables are a bad idea. Instead, you'd be better off storing your vec...

unique vector with restrictions

I suggest you read this post about why dynamically named variables are a bad idea. Instead, you'd be better off storing your vec...

26 days ago | 0

| accepted

Answered

Why do I get this error message "Array indices must be positive integers or logical values."

You have three distinct problems in this one line of code: Z = x.^2*y(y-1)*(y+1) One of them is causing the error you are seei...

Why do I get this error message "Array indices must be positive integers or logical values."

You have three distinct problems in this one line of code: Z = x.^2*y(y-1)*(y+1) One of them is causing the error you are seei...

27 days ago | 0

| accepted

Answered

I wish to move the tabs from the side, to up, please help

In your screenshot, see where there is a "View" tab along the top? Click that, and then use the "Tabs Position". This answer sh...

I wish to move the tabs from the side, to up, please help

In your screenshot, see where there is a "View" tab along the top? Click that, and then use the "Tabs Position". This answer sh...

27 days ago | 0

Answered

Loop generation doubt.

% DO NOT USE THESE. USE YOUR DATA. THESE ARE FOR AN EXAMPLE ONLY T = rand(160547,1); A = rand(44880,1); k = rand(size(A)); w...

Loop generation doubt.

% DO NOT USE THESE. USE YOUR DATA. THESE ARE FOR AN EXAMPLE ONLY T = rand(160547,1); A = rand(44880,1); k = rand(size(A)); w...

1 month ago | 0

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Answered

Loop generation doubt.

You don't need to use a loop. MATLAB will do vectorized calculations. If you have a fairly recent version of MATLAB, you can do...

Loop generation doubt.

You don't need to use a loop. MATLAB will do vectorized calculations. If you have a fairly recent version of MATLAB, you can do...

1 month ago | 0

Answered

Can not make Legend border visible

There is a box around the legend by default, and I cannot remember that ever not being the case. Does this happen from a freshl...

Can not make Legend border visible

There is a box around the legend by default, and I cannot remember that ever not being the case. Does this happen from a freshl...

1 month ago | 0

Answered

Extracting length information of pattern from specific string (not fixed string)

% Sample input str ="0101000000011010100000001101010000000110101000000011010100000001101010000000110101000000111110101"; % I...

Extracting length information of pattern from specific string (not fixed string)

% Sample input str ="0101000000011010100000001101010000000110101000000011010100000001101010000000110101000000111110101"; % I...

1 month ago | 1

Answered

Extracting length information of pattern from specific string (not fixed string)

If 0101 is always at the beginning of the string, then % Example input str ="0101000011111111111111100000101010"; % The 8 d...

Extracting length information of pattern from specific string (not fixed string)

If 0101 is always at the beginning of the string, then % Example input str ="0101000011111111111111100000101010"; % The 8 d...

1 month ago | 1

Answered

Full distribution for 'b' coefficient when using coxphfit

I have a few thoughts. When you say "usually you get ...", do you mean from some other software package, specifically? Are you...

Full distribution for 'b' coefficient when using coxphfit

I have a few thoughts. When you say "usually you get ...", do you mean from some other software package, specifically? Are you...

1 month ago | 0

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Answered

Indexing in a vector

Please see my comment. If your input is a vector (i.e. one-dimensional), then [maxValue indexToMaxValue] = max(inputVector);

Indexing in a vector

Please see my comment. If your input is a vector (i.e. one-dimensional), then [maxValue indexToMaxValue] = max(inputVector);

1 month ago | 1

| accepted

Answered

how to plot boxplot of two matrix

There are likely a few different ways to do this task. Here is one straightforward way: A = rand(13,5); B = rand(9,5); xc =...

how to plot boxplot of two matrix

There are likely a few different ways to do this task. Here is one straightforward way: A = rand(13,5); B = rand(9,5); xc =...

1 month ago | 0

Answered

multivariable regression, known structure, calculate coefficients

If you have the Statistics and Machine Learning Toolbox, you should be able to use the fitnlm function.

multivariable regression, known structure, calculate coefficients

If you have the Statistics and Machine Learning Toolbox, you should be able to use the fitnlm function.

2 months ago | 0

Answered

Error: Unable to perform assignment because the left and right sides have a different number of elements.

In this line S(i+1) = S(i) + (s1 + 2*s2 + 2*s3 + s4)/6; the variables s1, s2, s3, and s4 are all row vectors with 300 elements...

Error: Unable to perform assignment because the left and right sides have a different number of elements.

In this line S(i+1) = S(i) + (s1 + 2*s2 + 2*s3 + s4)/6; the variables s1, s2, s3, and s4 are all row vectors with 300 elements...

2 months ago | 0

Answered

Using cellfun and regexp question

I think this does what you want. storedSamplerates{1} = 'SAMPLERATE: 50000'; storedSamplerates{2} = 'samplerate:200000'; ...

Using cellfun and regexp question

I think this does what you want. storedSamplerates{1} = 'SAMPLERATE: 50000'; storedSamplerates{2} = 'samplerate:200000'; ...

2 months ago | 0

| accepted

Answered

select random numbers from a group

I think I understand at least part of your question. Do you have the Statistics and Machine Learning Toolbox? If so, then to se...

select random numbers from a group

I think I understand at least part of your question. Do you have the Statistics and Machine Learning Toolbox? If so, then to se...

2 months ago | 0

Answered

error in multiplication of array by a number

Just a guess here. If you have x = [0.2204 0.1897] and then type 1000*x in the command window, it will display [220.4 189.7]...

error in multiplication of array by a number

Just a guess here. If you have x = [0.2204 0.1897] and then type 1000*x in the command window, it will display [220.4 189.7]...

2 months ago | 0

Answered

Take mean value when elements inside array "clump up"

Assuming that my guess about the correct output is correct, then the following should work. % Original (sorted) data a = [1; 1...

Take mean value when elements inside array "clump up"

Assuming that my guess about the correct output is correct, then the following should work. % Original (sorted) data a = [1; 1...

2 months ago | 0

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Answered

Running code and getting error about vector must be the same length

It's the subtle difference between these two lines of code: xAK_val = [xAK-.5, xAK + .5, xAK + .5, xAK -.5]; yAK_val = [yAK-.5...

Running code and getting error about vector must be the same length

It's the subtle difference between these two lines of code: xAK_val = [xAK-.5, xAK + .5, xAK + .5, xAK -.5]; yAK_val = [yAK-.5...

2 months ago | 1

| accepted

Answered

Why is Matlab 2019B not using python 3.6?

The following worked for me, per instructions in the documentation for pyenv. First, I ran pyenv with no argument, which told...

Why is Matlab 2019B not using python 3.6?

The following worked for me, per instructions in the documentation for pyenv. First, I ran pyenv with no argument, which told...

2 months ago | 0

Answered

Rectangular matrix manipulation with triu and tril

This will use the largest square matrix from the bottom right corner, as input to triu: d = min(size(A))-1; triu(A(end-d:end,e...

Rectangular matrix manipulation with triu and tril

This will use the largest square matrix from the bottom right corner, as input to triu: d = min(size(A))-1; triu(A(end-d:end,e...

2 months ago | 1

Answered

Creating subvectors from a vector

reshape(X,[],4) See the documentation for reshape for details. The empty square brackets there indicate that MATLAB should infe...

Creating subvectors from a vector

reshape(X,[],4) See the documentation for reshape for details. The empty square brackets there indicate that MATLAB should infe...

2 months ago | 1

| accepted

Answered

How to convert a cell to matrix?

Here is one straightforward way: % Original data A={[1 3 4]; [2 5 6 4]; [2 6 8 9 5 6]; [3 6 5 4 1]}; %%%%%% Con...

How to convert a cell to matrix?

Here is one straightforward way: % Original data A={[1 3 4]; [2 5 6 4]; [2 6 8 9 5 6]; [3 6 5 4 1]}; %%%%%% Con...

2 months ago | 1

Answered

How to change two variables in one loop?

There are many things about your question that I don't fully understand. The least important is whether you meant the loop to go...

How to change two variables in one loop?

There are many things about your question that I don't fully understand. The least important is whether you meant the loop to go...

2 months ago | 0

Answered

Error using cd, Cannot CD

This code works for me when mfilename is a file that exists in my path, but otherwise it gives that error. So, my guess is that ...

Error using cd, Cannot CD

This code works for me when mfilename is a file that exists in my path, but otherwise it gives that error. So, my guess is that ...

2 months ago | 0

| accepted

Answered

Add new row to String Array.

You can preallocate memory for the entire string array with str = strings(200000,1); and then fill row-by-row rather than appe...

Add new row to String Array.

You can preallocate memory for the entire string array with str = strings(200000,1); and then fill row-by-row rather than appe...

2 months ago | 1

| accepted

Answered

connect matlab to the cloud

Did you try to google "matlab amazon azure"? When I did, this link about using MATLAB in the Cloud was the first hit, and it has...

connect matlab to the cloud

Did you try to google "matlab amazon azure"? When I did, this link about using MATLAB in the Cloud was the first hit, and it has...

2 months ago | 0

Answered

Difference between errorbar and errorbarxy (function)

See this example from the documentation for errorbar.

Difference between errorbar and errorbarxy (function)

See this example from the documentation for errorbar.

3 months ago | 0

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Answered

Creating Global Stiffness matrix

If I've understood correctly, then K = zeros(8); vec1 = [1 2 3 4 7 8]; K(vec1,vec1) = K(vec1,vec1) + k1; vec2 = [5 6 7 8...

Creating Global Stiffness matrix

If I've understood correctly, then K = zeros(8); vec1 = [1 2 3 4 7 8]; K(vec1,vec1) = K(vec1,vec1) + k1; vec2 = [5 6 7 8...

3 months ago | 1

Answered

Average of a column without including a certain number

There is no specific function for this, but it is easy to do without a loop: A = [6; 3; 6; 4]; N = 6; mean_A_without_N = mean...

Average of a column without including a certain number

There is no specific function for this, but it is easy to do without a loop: A = [6; 3; 6; 4]; N = 6; mean_A_without_N = mean...

3 months ago | 1

Answered

customize legend: extra legend entry

"The first item doesn't belong to any graph" immediately indicates to me that this text does not belong in the legend, for two r...

customize legend: extra legend entry

"The first item doesn't belong to any graph" immediately indicates to me that this text does not belong in the legend, for two r...

3 months ago | 0

| accepted