Answered

Keep a temporary variable after parfor

>> Parfor loop works when i comment out the plotting parts of the code. I tried what you said and only experienced what you wro...

Keep a temporary variable after parfor

>> Parfor loop works when i comment out the plotting parts of the code. I tried what you said and only experienced what you wro...

4 days ago | 0

| accepted

Answered

how to fix Warning: Imaginary parts of complex X and/or Y arguments ignored

If you have a negative number raised to a non-integer power, you can sometimes get a complex number. Take a look at: https://ww...

how to fix Warning: Imaginary parts of complex X and/or Y arguments ignored

If you have a negative number raised to a non-integer power, you can sometimes get a complex number. Take a look at: https://ww...

10 days ago | 0

Answered

Solving a simple equation

Sorry, no idea if this is right. clc, clearvars %Angle = B %Thickness = u %Inner Radius = p %Developed length = L %L = L1+...

Solving a simple equation

Sorry, no idea if this is right. clc, clearvars %Angle = B %Thickness = u %Inner Radius = p %Developed length = L %L = L1+...

10 days ago | 0

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Question

Convert near zero complex parts to 0

In R2020a, I took a complex vector and converted near zero parts to zero. It took two long lines to do it. Can it be done in one...

11 days ago | 1 answer | 0

Answered

What am I doing wrong here? I am trying to recreate following highlighted equations in the table.

clc; clear; clf ep = linspace(0,1); m1 = 1.5; m2 = 3.8; ep0= 1; alpha = 0.785; epp = 0.11; qep = (2.76*ep.*cosh((3*ep)-1.92)...

What am I doing wrong here? I am trying to recreate following highlighted equations in the table.

clc; clear; clf ep = linspace(0,1); m1 = 1.5; m2 = 3.8; ep0= 1; alpha = 0.785; epp = 0.11; qep = (2.76*ep.*cosh((3*ep)-1.92)...

16 days ago | 0

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Answered

Script not found in the Command Windows

I am expecting that you will get the following: >> which essai 'essai' not found. Write down the folder where your essai.m fi...

Script not found in the Command Windows

I am expecting that you will get the following: >> which essai 'essai' not found. Write down the folder where your essai.m fi...

16 days ago | 0

Answered

Obtaining the envelope of AM signal using hilbert transform

In general, if you increase the carrier frequency, you will get a better envelope. Specific to your figure, to remove the rippl...

Obtaining the envelope of AM signal using hilbert transform

In general, if you increase the carrier frequency, you will get a better envelope. Specific to your figure, to remove the rippl...

17 days ago | 0

Answered

computing vectors with string and numbers (easy question)

Here is code that keeps the indexing scheme based upon the order in which the names occur in your vector of strings. >> S = ["H...

computing vectors with string and numbers (easy question)

Here is code that keeps the indexing scheme based upon the order in which the names occur in your vector of strings. >> S = ["H...

17 days ago | 1

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Answered

computing vectors with string and numbers (easy question)

>> S = ["joe" "april" "andrea" "joe" "andrea"] S = 1×5 string array "joe" "april" "andrea" "joe" "andrea" ...

computing vectors with string and numbers (easy question)

>> S = ["joe" "april" "andrea" "joe" "andrea"] S = 1×5 string array "joe" "april" "andrea" "joe" "andrea" ...

17 days ago | 0

Answered

Simulating a drone and bird as radar targets

Sounds like a good project. Personally, I would take a movie of a bird and a drone, and then try to reconstruct a 3D polygon of ...

Simulating a drone and bird as radar targets

Sounds like a good project. Personally, I would take a movie of a bird and a drone, and then try to reconstruct a 3D polygon of ...

1 month ago | 0

Answered

How to generate a list of random ID which can later be used instead of participant name?

Due to the cyclist remark about homework, I am just starting the script. It leaves out certain patterns like 'a9a9' since it is ...

How to generate a list of random ID which can later be used instead of participant name?

Due to the cyclist remark about homework, I am just starting the script. It leaves out certain patterns like 'a9a9' since it is ...

1 month ago | 0

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Answered

Syntax Question, Why does this equal zero?

Good question. :) >> 1 - 7*( sym(8/7) - 1 ) ans = 0 % you are right; the answer is 0 For double numbers, look at the format...

Syntax Question, Why does this equal zero?

Good question. :) >> 1 - 7*( sym(8/7) - 1 ) ans = 0 % you are right; the answer is 0 For double numbers, look at the format...

1 month ago | 1

Answered

Forcing Page Breaks in MATLAB

The official 2016 answer is here, and no discernible updates since 2016. It would be great if MathWorks would add that to Live E...

Forcing Page Breaks in MATLAB

The official 2016 answer is here, and no discernible updates since 2016. It would be great if MathWorks would add that to Live E...

1 month ago | 0

Answered

how to get the mean for specific rows number of one columns

M = [ ... 1 5 2 7 3 9 1 9 2 7 3 9 ]; T = array2table( M, ... 'VariableNames',{'Month','...

how to get the mean for specific rows number of one columns

M = [ ... 1 5 2 7 3 9 1 9 2 7 3 9 ]; T = array2table( M, ... 'VariableNames',{'Month','...

2 months ago | 0

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Answered

Vector. Change the way my program gives me the answer.

v = [1 2 -3 4]; v( diff( sign( [v(1) v] ) ) ~= 0 ) ans = -3 4

Vector. Change the way my program gives me the answer.

v = [1 2 -3 4]; v( diff( sign( [v(1) v] ) ) ~= 0 ) ans = -3 4

2 months ago | 1

Answered

Vector. Change the way my program gives me the answer.

v = [1 2 -3 4]; n = 1; l = length (v); ii = 1; c = []; while (n < l) a = v(n); b = v(n+1); n = n+1; % if (a <...

Vector. Change the way my program gives me the answer.

v = [1 2 -3 4]; n = 1; l = length (v); ii = 1; c = []; while (n < l) a = v(n); b = v(n+1); n = n+1; % if (a <...

2 months ago | 1

Answered

Group data in bins

Hope this is close to what you are looking for. EDGES' ans = 0 0.5000 1.0000 1.5000 2.0000 ...

Group data in bins

Hope this is close to what you are looking for. EDGES' ans = 0 0.5000 1.0000 1.5000 2.0000 ...

2 months ago | 0

Answered

How to solve matrix function in Matlab?

Define Z = AXB + C - X You have to start off with your initial best guess for X based upon the nature of the model. For lack of...

How to solve matrix function in Matlab?

Define Z = AXB + C - X You have to start off with your initial best guess for X based upon the nature of the model. For lack of...

2 months ago | 1

Answered

Creating blocks of average values from a series but avoiding dynamic variable names

Since you have 5 groups of 100 numbers, I thought you wanted the mean of each group. That gives 5 means. So I did not understand...

Creating blocks of average values from a series but avoiding dynamic variable names

Since you have 5 groups of 100 numbers, I thought you wanted the mean of each group. That gives 5 means. So I did not understand...

2 months ago | 1

| accepted

Answered

plot discrete time domain signals

I recommend using following substitutions: plot(t,y) axis( [-1 10 0 1])

plot discrete time domain signals

I recommend using following substitutions: plot(t,y) axis( [-1 10 0 1])

2 months ago | 0

| accepted

Solved

Longest run of consecutive numbers

Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

2 months ago

Answered

Imbedded If statement in Function help!

Did you know that >> logical(1) + logical(1) ans = 2 and that (age>50) is a logical?

Imbedded If statement in Function help!

Did you know that >> logical(1) + logical(1) ans = 2 and that (age>50) is a logical?

2 months ago | 1

Answered

In Online Matlab under App menu, Signal Analyzer not working?

The Signal Analyzer app comes with a purchase of the Signal Processing Toolbox. Please review this short video: Signal Analysi...

In Online Matlab under App menu, Signal Analyzer not working?

The Signal Analyzer app comes with a purchase of the Signal Processing Toolbox. Please review this short video: Signal Analysi...

2 months ago | 0

| accepted

Answered

Computer to boost MATLAB operation

As @Jan pointed out, it is very important that you run your profiler to find out where your time is being spent and focus on tho...

Computer to boost MATLAB operation

As @Jan pointed out, it is very important that you run your profiler to find out where your time is being spent and focus on tho...

2 months ago | 2

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Answered

Parfor nested loop Table definition

>> can I at least parallelise the writing of the 4 xlsx tables to speed up the code I do not see how to do that easily without ...

Parfor nested loop Table definition

>> can I at least parallelise the writing of the 4 xlsx tables to speed up the code I do not see how to do that easily without ...

2 months ago | 1

| accepted

Answered

How to obtain the first and second derivative of the "xt" function

You can use diff function as a crude way to take derivates. But, you should also know that diff introduces noise. Here is an art...

How to obtain the first and second derivative of the "xt" function

You can use diff function as a crude way to take derivates. But, you should also know that diff introduces noise. Here is an art...

2 months ago | 0

| accepted

Answered

Computer to boost MATLAB operation

Where is your time being spent - in the nested loop, or in the last loop that is outside the nested loop? If, by "last loop", y...

Computer to boost MATLAB operation

Where is your time being spent - in the nested loop, or in the last loop that is outside the nested loop? If, by "last loop", y...

2 months ago | 0

Answered

Giving a moving point a chance to change path every step?

You should just run the script directly. You should not try to call selectPath from the command line.

Giving a moving point a chance to change path every step?

You should just run the script directly. You should not try to call selectPath from the command line.

2 months ago | 1

Answered

Giving a moving point a chance to change path every step?

Not sure exactly what you want, but possibly this is getting close. The refactoring should make it easier to modify. % set rand...

Giving a moving point a chance to change path every step?

Not sure exactly what you want, but possibly this is getting close. The refactoring should make it easier to modify. % set rand...

2 months ago | 1

| accepted

Answered

Handling data cell array

Yes, regex is elegant. Here is a non-regex script. This algorithm allows the x,y,z to be in any order in each row of A. A = {'...

Handling data cell array

Yes, regex is elegant. Here is a non-regex script. This algorithm allows the x,y,z to be in any order in each row of A. A = {'...

2 months ago | 1