Answered

How can I separate complex numbers from the other in a matrix?

% Example data z = [1 1+2*i 3 4+5*i] mask = imag(z)==0; The variable mask is a logical variable that is TRUE at the locatio...

How can I separate complex numbers from the other in a matrix?

% Example data z = [1 1+2*i 3 4+5*i] mask = imag(z)==0; The variable mask is a logical variable that is TRUE at the locatio...

10 days ago | 2

Answered

Finding the locations of non-similar value cells

I'm not certain I understand exactly what you want, but this is my best guess: % Define input arrays CA = {[-10 2],[6;6]}; CB...

Finding the locations of non-similar value cells

I'm not certain I understand exactly what you want, but this is my best guess: % Define input arrays CA = {[-10 2],[6;6]}; CB...

19 days ago | 0

Answered

NIST Randomness test execution

The answer from Peter Perkins here is old, but I believe it is still accurate.

NIST Randomness test execution

The answer from Peter Perkins here is old, but I believe it is still accurate.

22 days ago | 0

| accepted

Answered

For every matrix row find rows within the same matrix that have more than one common element in same index below the row

Here is a start at a solution for you. A = [ 1 2 3 1 4 5 3 4 5 1 2 4 1 2 5 2 4 5]; for i = 1:size(A,1)-1 r{i} = f...

For every matrix row find rows within the same matrix that have more than one common element in same index below the row

Here is a start at a solution for you. A = [ 1 2 3 1 4 5 3 4 5 1 2 4 1 2 5 2 4 5]; for i = 1:size(A,1)-1 r{i} = f...

23 days ago | 0

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Answered

Serious mistake installing Matlab

Does this documentation page about uninstalling MATLAB help?

Serious mistake installing Matlab

Does this documentation page about uninstalling MATLAB help?

1 month ago | 0

Answered

I would like to call a row element from a matrix however, the row is written inside another matrix

If T is the temperature matrix, then it sounds like maybe you want to do T(A(1)) Or use a loop to access more rows of T? for ...

I would like to call a row element from a matrix however, the row is written inside another matrix

If T is the temperature matrix, then it sounds like maybe you want to do T(A(1)) Or use a loop to access more rows of T? for ...

1 month ago | 1

Answered

ismember 0×0 empty logical array to logic

Making a huge guess here, but are you sure you don't mean ~ismember(ID,A) rather than ~ismember(A,ID) Then, assuming ID is a...

ismember 0×0 empty logical array to logic

Making a huge guess here, but are you sure you don't mean ~ismember(ID,A) rather than ~ismember(A,ID) Then, assuming ID is a...

1 month ago | 0

Answered

I have a csv file, which contains some 0 and some non-zero values. How to get the index of the non-zero values in the csv file?

data = csvread('Book4.csv'); idx = find(data);

I have a csv file, which contains some 0 and some non-zero values. How to get the index of the non-zero values in the csv file?

data = csvread('Book4.csv'); idx = find(data);

1 month ago | 1

| accepted

Answered

replace random data with dataset

My best guess at your error is that your randomly generated data consists of two [1 x numP] row vectors, but when you read your ...

replace random data with dataset

My best guess at your error is that your randomly generated data consists of two [1 x numP] row vectors, but when you read your ...

1 month ago | 0

Answered

How to find a polynomial of degree 2 that fits the given data with minimal approximation error? and then sketch discrete points and the graph of the polynomial

You could use the polyfit and plot commands (and of course a few more fundamental calculations like subtraction) to do this.

How to find a polynomial of degree 2 that fits the given data with minimal approximation error? and then sketch discrete points and the graph of the polynomial

You could use the polyfit and plot commands (and of course a few more fundamental calculations like subtraction) to do this.

1 month ago | 0

Answered

draw circle through two given points in plot

In general, there are an infinite number of circles that pass through two given points. If you don't care which one, then one p...

draw circle through two given points in plot

In general, there are an infinite number of circles that pass through two given points. If you don't care which one, then one p...

2 months ago | 1

Answered

Reading file with variable name

for n = 1:16 filename = sprintf('PPT%d.TXT',n) end That loop creates the filenames you need, with the '%d' in the sprintf...

Reading file with variable name

for n = 1:16 filename = sprintf('PPT%d.TXT',n) end That loop creates the filenames you need, with the '%d' in the sprintf...

2 months ago | 1

Answered

Why the result of GMM(Gaussian mixture model) is not the same for twice calculation?

There is a random component to the fitting algorithm. The results will not be exactly the same each time, because the pseudorand...

Why the result of GMM(Gaussian mixture model) is not the same for twice calculation?

There is a random component to the fitting algorithm. The results will not be exactly the same each time, because the pseudorand...

2 months ago | 0

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Answered

Creating new dataset corresponding to certain name within a variable column

Here is one possible way. (It assumes your table's variable name is tbl.) outcome = tbl(ismember(tbl.bottle,'C-a'),:);

Creating new dataset corresponding to certain name within a variable column

Here is one possible way. (It assumes your table's variable name is tbl.) outcome = tbl(ismember(tbl.bottle,'C-a'),:);

2 months ago | 0

Answered

Boxplot and Dimensions Arrays

If you define your original arrays as column vectors, instead of row vectors, your code will work. Try this instead: %msf for s...

Boxplot and Dimensions Arrays

If you define your original arrays as column vectors, instead of row vectors, your code will work. Try this instead: %msf for s...

2 months ago | 0

| accepted

Answered

Removing vertical line from the script window

From the Command Window: MATLAB --> Preferences --> Editor/Debugger --> Display Increase the right-hand text limit.

Removing vertical line from the script window

From the Command Window: MATLAB --> Preferences --> Editor/Debugger --> Display Increase the right-hand text limit.

2 months ago | 0

| accepted

Answered

Center of two points (positive and nenegative values)

I believe your calculation is correct for negative values of v. The problem is that the point may not lie between the two input ...

Center of two points (positive and nenegative values)

I believe your calculation is correct for negative values of v. The problem is that the point may not lie between the two input ...

2 months ago | 0

| accepted

Answered

how to test if multiple distributions are statistically different from each other?

What is reported in that table are the parameters of lognormal distributions. Because the parameters are different, those distri...

how to test if multiple distributions are statistically different from each other?

What is reported in that table are the parameters of lognormal distributions. Because the parameters are different, those distri...

2 months ago | 0

Answered

Missing factor using rule of three?

Try (0.004*4*pi)/(2*pi) The reason your syntax does not work is that it will divide by 2, and then multiply by pi. See order ...

Missing factor using rule of three?

Try (0.004*4*pi)/(2*pi) The reason your syntax does not work is that it will divide by 2, and then multiply by pi. See order ...

2 months ago | 1

| accepted

Answered

How can I average the first 14 columns, the second 14 columns, and so on and so forth?

Assuming you actually want to average over columns (see my question above), I believe out = movmean(M,[0 13],2); out = out(:,1...

How can I average the first 14 columns, the second 14 columns, and so on and so forth?

Assuming you actually want to average over columns (see my question above), I believe out = movmean(M,[0 13],2); out = out(:,1...

3 months ago | 1

Answered

delete rows from matrix if some of its elements equal all elements in another rows another different dimension matrix?

Here is one way: Sw = [2 3 6 25 11 3 6 7 8 9 3 6 25 8 9 3 6 25 11 11 3 4 5 6 25 4 ...

delete rows from matrix if some of its elements equal all elements in another rows another different dimension matrix?

Here is one way: Sw = [2 3 6 25 11 3 6 7 8 9 3 6 25 8 9 3 6 25 11 11 3 4 5 6 25 4 ...

3 months ago | 0

Answered

Can copula PDF value exceed 1?

Yes, a probability distribution function can have values greater than 1. Remember that the PDF is not the probability at that l...

Can copula PDF value exceed 1?

Yes, a probability distribution function can have values greater than 1. Remember that the PDF is not the probability at that l...

3 months ago | 0

| accepted

Answered

What happen with confusion matrix ?

It looks like you have 55 observations. 51 of them were classified correctly (along the diagonal, indicated in green). But 4 of ...

What happen with confusion matrix ?

It looks like you have 55 observations. 51 of them were classified correctly (along the diagonal, indicated in green). But 4 of ...

3 months ago | 0

| accepted

Answered

Vectorized Search of substrings in Cell Array

Discovered a much cleaner way: contains(t,'bc');

Vectorized Search of substrings in Cell Array

Discovered a much cleaner way: contains(t,'bc');

3 months ago | 0

Answered

Vectorized Search of substrings in Cell Array

Here is one way: cellfun(@(x)not(isempty(x)),strfind(t,'bc'))

Vectorized Search of substrings in Cell Array

Here is one way: cellfun(@(x)not(isempty(x)),strfind(t,'bc'))

3 months ago | 1

Answered

Conversion of any base (n) to a base 10 number?

There is a thorough answer to this question here.

Conversion of any base (n) to a base 10 number?

There is a thorough answer to this question here.

3 months ago | 0

Answered

How to create this matrix without hardcoding the values

Here is one way. r = [ 1.5355 + 0.0000i -1.0914 + 1.0781i -1.0914 - 1.0781i 0.3621 + 1.3117i 0.3621 -...

How to create this matrix without hardcoding the values

Here is one way. r = [ 1.5355 + 0.0000i -1.0914 + 1.0781i -1.0914 - 1.0781i 0.3621 + 1.3117i 0.3621 -...

4 months ago | 0

| accepted

Answered

how to make a curve of Poisson, Rayleih, t , ....etc distribution of my random data (in histogram)

If you have the Statistics and Machine Learning Toolboox, then you could use the fitdist function. It will fit a large variety o...

how to make a curve of Poisson, Rayleih, t , ....etc distribution of my random data (in histogram)

If you have the Statistics and Machine Learning Toolboox, then you could use the fitdist function. It will fit a large variety o...

4 months ago | 0

| accepted

Answered

gevfit error: Operands to the || and && operators must be convertible to logical scalar values

That code works for me, in both 2018b and 2019a. Does this happen with a freshly started instance of MATLAB? If so, you might ...

gevfit error: Operands to the || and && operators must be convertible to logical scalar values

That code works for me, in both 2018b and 2019a. Does this happen with a freshly started instance of MATLAB? If so, you might ...

5 months ago | 0

| accepted